[968] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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[1192] | 26 | // $Id: G4PenelopeIonisationModel.cc,v 1.10 2009/10/23 09:29:24 pandola Exp $ |
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[1196] | 27 | // GEANT4 tag $Name: geant4-09-03-cand-01 $ |
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[968] | 28 | // |
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| 29 | // Author: Luciano Pandola |
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| 30 | // |
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| 31 | // History: |
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| 32 | // -------- |
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| 33 | // 26 Nov 2008 L Pandola Migration from process to model |
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[1055] | 34 | // 17 Apr 2009 V Ivanchenko Cleanup initialisation and generation of secondaries: |
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| 35 | // - apply internal high-energy limit only in constructor |
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| 36 | // - do not apply low-energy limit (default is 0) |
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| 37 | // - added MinEnergyCut method |
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| 38 | // - do not change track status |
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| 39 | // 19 May 2009 L Pandola Explicitely set to zero pointers deleted in |
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| 40 | // Initialise(), since they might be checked later on |
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[1192] | 41 | // 21 Oct 2009 L Pandola Remove un-necessary fUseAtomicDeexcitation flag - now managed by |
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| 42 | // G4VEmModel::DeexcitationFlag() |
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| 43 | // Add ActivateAuger() method |
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[968] | 44 | // |
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| 45 | |
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| 46 | #include "G4PenelopeIonisationModel.hh" |
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| 47 | #include "G4ParticleDefinition.hh" |
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| 48 | #include "G4MaterialCutsCouple.hh" |
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| 49 | #include "G4ProductionCutsTable.hh" |
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| 50 | #include "G4DynamicParticle.hh" |
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| 51 | #include "G4Element.hh" |
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| 52 | #include "G4AtomicTransitionManager.hh" |
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| 53 | #include "G4AtomicDeexcitation.hh" |
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| 54 | #include "G4AtomicShell.hh" |
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| 55 | #include "G4Gamma.hh" |
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| 56 | #include "G4Electron.hh" |
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| 57 | #include "G4Positron.hh" |
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| 58 | #include "G4CrossSectionHandler.hh" |
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| 59 | #include "G4AtomicDeexcitation.hh" |
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| 60 | #include "G4VEMDataSet.hh" |
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| 61 | |
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| 62 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 63 | |
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| 64 | |
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| 65 | G4PenelopeIonisationModel::G4PenelopeIonisationModel(const G4ParticleDefinition*, |
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| 66 | const G4String& nam) |
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| 67 | :G4VEmModel(nam),isInitialised(false), |
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| 68 | kineticEnergy1(0.*eV), |
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| 69 | cosThetaPrimary(1.0), |
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| 70 | energySecondary(0.*eV), |
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| 71 | cosThetaSecondary(0.0), |
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| 72 | iOsc(-1), |
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| 73 | crossSectionHandler(0),ionizationEnergy(0), |
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| 74 | resonanceEnergy(0),occupationNumber(0),shellFlag(0), |
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| 75 | theXSTable(0) |
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| 76 | { |
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| 77 | fIntrinsicLowEnergyLimit = 100.0*eV; |
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| 78 | fIntrinsicHighEnergyLimit = 100.0*GeV; |
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[1055] | 79 | // SetLowEnergyLimit(fIntrinsicLowEnergyLimit); |
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[968] | 80 | SetHighEnergyLimit(fIntrinsicHighEnergyLimit); |
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| 81 | // |
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[1192] | 82 | // Atomic deexcitation model activated by default |
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| 83 | SetDeexcitationFlag(true); |
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[968] | 84 | verboseLevel= 0; |
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| 85 | |
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| 86 | // Verbosity scale: |
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| 87 | // 0 = nothing |
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| 88 | // 1 = warning for energy non-conservation |
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| 89 | // 2 = details of energy budget |
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| 90 | // 3 = calculation of cross sections, file openings, sampling of atoms |
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| 91 | // 4 = entering in methods |
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| 92 | |
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| 93 | //These vectors do not change when materials or cut change. |
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| 94 | //Therefore I can read it at the constructor |
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| 95 | ionizationEnergy = new std::map<G4int,G4DataVector*>; |
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| 96 | resonanceEnergy = new std::map<G4int,G4DataVector*>; |
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| 97 | occupationNumber = new std::map<G4int,G4DataVector*>; |
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| 98 | shellFlag = new std::map<G4int,G4DataVector*>; |
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| 99 | |
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| 100 | ReadData(); //Read data from file |
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| 101 | |
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| 102 | } |
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| 103 | |
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| 104 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 105 | |
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| 106 | G4PenelopeIonisationModel::~G4PenelopeIonisationModel() |
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| 107 | { |
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| 108 | |
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| 109 | if (crossSectionHandler) delete crossSectionHandler; |
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| 110 | |
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| 111 | if (theXSTable) |
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| 112 | { |
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| 113 | for (size_t i=0; i<theXSTable->size(); i++) |
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| 114 | delete (*theXSTable)[i]; |
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| 115 | delete theXSTable; |
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| 116 | } |
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| 117 | |
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| 118 | |
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| 119 | std::map <G4int,G4DataVector*>::iterator i; |
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| 120 | for (i=ionizationEnergy->begin();i != ionizationEnergy->end();i++) |
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| 121 | if (i->second) delete i->second; |
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| 122 | for (i=resonanceEnergy->begin();i != resonanceEnergy->end();i++) |
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| 123 | if (i->second) delete i->second; |
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| 124 | for (i=occupationNumber->begin();i != occupationNumber->end();i++) |
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| 125 | if (i->second) delete i->second; |
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| 126 | for (i=shellFlag->begin();i != shellFlag->end();i++) |
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| 127 | if (i->second) delete i->second; |
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| 128 | |
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| 129 | if (ionizationEnergy) |
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| 130 | delete ionizationEnergy; |
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| 131 | if (resonanceEnergy) |
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| 132 | delete resonanceEnergy; |
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| 133 | if (occupationNumber) |
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| 134 | delete occupationNumber; |
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| 135 | if (shellFlag) |
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| 136 | delete shellFlag; |
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| 137 | } |
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| 138 | |
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| 139 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 140 | |
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| 141 | void G4PenelopeIonisationModel::Initialise(const G4ParticleDefinition* particle, |
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| 142 | const G4DataVector& cuts) |
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| 143 | { |
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| 144 | if (verboseLevel > 3) |
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| 145 | G4cout << "Calling G4PenelopeIonisationModel::Initialise()" << G4endl; |
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| 146 | |
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| 147 | //Delete and re-initialize the cross section handler |
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| 148 | if (crossSectionHandler) |
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| 149 | { |
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| 150 | crossSectionHandler->Clear(); |
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| 151 | delete crossSectionHandler; |
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[1055] | 152 | crossSectionHandler = 0; |
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[968] | 153 | } |
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| 154 | |
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| 155 | if (theXSTable) |
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| 156 | { |
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| 157 | for (size_t i=0; i<theXSTable->size(); i++) |
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[1055] | 158 | { |
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| 159 | delete (*theXSTable)[i]; |
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| 160 | (*theXSTable)[i] = 0; |
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| 161 | } |
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[968] | 162 | delete theXSTable; |
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[1055] | 163 | theXSTable = 0; |
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[968] | 164 | } |
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| 165 | |
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| 166 | crossSectionHandler = new G4CrossSectionHandler(); |
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| 167 | crossSectionHandler->Clear(); |
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| 168 | G4String crossSectionFile = "NULL"; |
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| 169 | |
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| 170 | if (particle == G4Electron::Electron()) |
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| 171 | crossSectionFile = "penelope/ion-cs-el-"; |
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| 172 | else if (particle == G4Positron::Positron()) |
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| 173 | crossSectionFile = "penelope/ion-cs-po-"; |
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| 174 | crossSectionHandler->LoadData(crossSectionFile); |
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| 175 | //This is used to retrieve cross section values later on |
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| 176 | crossSectionHandler->BuildMeanFreePathForMaterials(); |
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[1055] | 177 | |
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| 178 | InitialiseElementSelectors(particle,cuts); |
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[968] | 179 | |
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[1055] | 180 | if (verboseLevel > 2) |
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[968] | 181 | G4cout << "Loaded cross section files for PenelopeIonisationModel" << G4endl; |
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| 182 | |
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[1055] | 183 | if (verboseLevel > 2) { |
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| 184 | G4cout << "Penelope Ionisation model is initialized " << G4endl |
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| 185 | << "Energy range: " |
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| 186 | << LowEnergyLimit() / keV << " keV - " |
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| 187 | << HighEnergyLimit() / GeV << " GeV" |
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| 188 | << G4endl; |
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| 189 | } |
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[968] | 190 | |
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| 191 | if(isInitialised) return; |
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[1055] | 192 | fParticleChange = GetParticleChangeForLoss(); |
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[968] | 193 | isInitialised = true; |
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| 194 | } |
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| 195 | |
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| 196 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 197 | |
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| 198 | G4double G4PenelopeIonisationModel::CrossSectionPerVolume(const G4Material* material, |
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| 199 | const G4ParticleDefinition* theParticle, |
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| 200 | G4double energy, |
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| 201 | G4double cutEnergy, |
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| 202 | G4double) |
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| 203 | { |
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| 204 | // Penelope model to calculate the cross section for inelastic collisions above the |
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| 205 | // threshold. It makes use of the Generalised Oscillator Strength (GOS) model from |
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| 206 | // D. Liljequist, J. Phys. D: Appl. Phys. 16 (1983) 1567 |
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| 207 | // |
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| 208 | // The total cross section (hard+soft) is read from a database file (element per |
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| 209 | // element), while the ratio hard-to-total is calculated analytically by taking |
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| 210 | // into account the atomic oscillators coming into the play for a given threshold. |
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| 211 | // This is done by the method CalculateCrossSectionsRatio(). |
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| 212 | // For incident e- the maximum energy allowed for the delta-rays is energy/2. |
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| 213 | // because particles are undistinghishable. |
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| 214 | // |
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| 215 | // The contribution is splitted in three parts: distant longitudinal collisions, |
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| 216 | // distant transverse collisions and close collisions. Each term is described by |
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| 217 | // its own analytical function. |
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| 218 | // Fermi density correction is calculated analytically according to |
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| 219 | // U. Fano, Ann. Rev. Nucl. Sci. 13 (1963),1 |
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| 220 | // |
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| 221 | if (verboseLevel > 3) |
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| 222 | G4cout << "Calling CrossSectionPerVolume() of G4PenelopeIonisationModel" << G4endl; |
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| 223 | |
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| 224 | SetupForMaterial(theParticle, material, energy); |
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| 225 | |
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[1055] | 226 | // VI - should be check at initialisation not in run time |
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| 227 | /* |
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[968] | 228 | if (!crossSectionHandler) |
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| 229 | { |
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| 230 | G4cout << "G4PenelopeIonisationModel::CrossSectionPerVolume" << G4endl; |
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| 231 | G4cout << "The cross section handler is not correctly initialized" << G4endl; |
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| 232 | G4Exception(); |
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| 233 | } |
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[1055] | 234 | */ |
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[968] | 235 | if (!theXSTable) |
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| 236 | { |
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| 237 | if (verboseLevel > 2) |
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| 238 | { |
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| 239 | G4cout << "G4PenelopeIonisationModel::CrossSectionPerVolume" << G4endl; |
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| 240 | G4cout << "Going to build Cross Section table " << G4endl; |
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| 241 | } |
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| 242 | theXSTable = new std::vector<G4VEMDataSet*>; |
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| 243 | theXSTable = BuildCrossSectionTable(theParticle); |
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| 244 | } |
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[1055] | 245 | |
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[968] | 246 | G4double totalCross = 0.0; |
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| 247 | G4double cross = 0.0; |
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| 248 | const G4ElementVector* theElementVector = material->GetElementVector(); |
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| 249 | const G4double* theAtomNumDensityVector = material->GetVecNbOfAtomsPerVolume(); |
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| 250 | G4double electronVolumeDensity = |
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| 251 | material->GetTotNbOfElectPerVolume(); //electron density |
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| 252 | |
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| 253 | if (verboseLevel > 4) |
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| 254 | G4cout << "Electron volume density of " << material->GetName() << ": " << |
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| 255 | electronVolumeDensity*cm3 << " electrons/cm3" << G4endl; |
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| 256 | |
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| 257 | G4int nelm = material->GetNumberOfElements(); |
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| 258 | for (G4int i=0; i<nelm; i++) |
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| 259 | { |
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| 260 | G4int iZ = (G4int) (*theElementVector)[i]->GetZ(); |
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| 261 | G4double ratio = CalculateCrossSectionsRatio(energy,cutEnergy,iZ,electronVolumeDensity, |
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| 262 | theParticle); |
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| 263 | cross += theAtomNumDensityVector[i]* |
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| 264 | crossSectionHandler->FindValue(iZ,energy)*ratio; |
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| 265 | totalCross += theAtomNumDensityVector[i]* |
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| 266 | crossSectionHandler->FindValue(iZ,energy); |
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| 267 | } |
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| 268 | |
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| 269 | if (verboseLevel > 2) |
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| 270 | { |
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| 271 | G4cout << "G4PenelopeIonisationModel " << G4endl; |
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| 272 | G4cout << "Mean free path for delta emission > " << cutEnergy/keV << " keV at " << |
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| 273 | energy/keV << " keV = " << (1./cross)/mm << " mm" << G4endl; |
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| 274 | G4cout << "Total free path for ionisation (no threshold) at " << |
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| 275 | energy/keV << " keV = " << (1./totalCross)/mm << " mm" << G4endl; |
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| 276 | } |
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| 277 | return cross; |
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| 278 | } |
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| 279 | |
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| 280 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 281 | |
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| 282 | G4double G4PenelopeIonisationModel::ComputeDEDXPerVolume(const G4Material* material, |
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| 283 | const G4ParticleDefinition* theParticle, |
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| 284 | G4double kineticEnergy, |
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| 285 | G4double cutEnergy) |
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| 286 | { |
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| 287 | // Penelope model to calculate the stopping power for soft inelastic collisions |
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| 288 | // below the threshold. It makes use of the Generalised Oscillator Strength (GOS) |
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| 289 | // model from |
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| 290 | // D. Liljequist, J. Phys. D: Appl. Phys. 16 (1983) 1567 |
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| 291 | // |
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| 292 | // The stopping power is calculated analytically using the dsigma/dW cross |
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| 293 | // section from the GOS models, which includes separate contributions from |
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| 294 | // distant longitudinal collisions, distant transverse collisions and |
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| 295 | // close collisions. Only the atomic oscillators that come in the play |
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| 296 | // (according to the threshold) are considered for the calculation. |
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| 297 | // Differential cross sections have a different form for e+ and e-. |
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| 298 | // |
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| 299 | // Fermi density correction is calculated analytically according to |
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| 300 | // U. Fano, Ann. Rev. Nucl. Sci. 13 (1963),1 |
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| 301 | |
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| 302 | if (verboseLevel > 3) |
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| 303 | G4cout << "Calling ComputeDEDX() of G4PenelopeIonisationModel" << G4endl; |
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| 304 | |
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| 305 | G4double sPower = 0.0; |
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| 306 | const G4ElementVector* theElementVector = material->GetElementVector(); |
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| 307 | const G4double* theAtomNumDensityVector = material->GetVecNbOfAtomsPerVolume(); |
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| 308 | G4double electronVolumeDensity = |
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| 309 | material->GetTotNbOfElectPerVolume(); //electron density |
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| 310 | |
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| 311 | //Loop on the elements in the material |
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| 312 | G4int nelm = material->GetNumberOfElements(); |
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| 313 | for (G4int i=0; i<nelm; i++) |
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| 314 | { |
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| 315 | G4int iZ = (G4int) (*theElementVector)[i]->GetZ(); |
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| 316 | |
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| 317 | //Calculate stopping power contribution from each element |
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| 318 | //Constants |
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| 319 | G4double gamma = 1.0+kineticEnergy/electron_mass_c2; |
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| 320 | G4double gamma2 = gamma*gamma; |
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| 321 | G4double beta2 = (gamma2-1.0)/gamma2; |
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| 322 | G4double constant = pi*classic_electr_radius*classic_electr_radius |
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| 323 | *2.0*electron_mass_c2/beta2; |
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| 324 | |
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| 325 | G4double delta = CalculateDeltaFermi(kineticEnergy,iZ,electronVolumeDensity); |
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| 326 | G4int nbOsc = (G4int) resonanceEnergy->find(iZ)->second->size(); |
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| 327 | G4double stoppingPowerForElement = 0.0; |
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| 328 | //Loop on oscillators of element Z |
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| 329 | for (G4int iosc=0;iosc<nbOsc;iosc++) |
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| 330 | { |
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| 331 | G4double S1 = 0.0; |
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| 332 | G4double resEnergy = (*(resonanceEnergy->find(iZ)->second))[iosc]; |
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| 333 | if (theParticle == G4Electron::Electron()) |
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| 334 | S1 = ComputeStoppingPowerForElectrons(kineticEnergy,cutEnergy,delta,resEnergy); |
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| 335 | else if (theParticle == G4Positron::Positron()) |
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| 336 | S1 = ComputeStoppingPowerForPositrons(kineticEnergy,cutEnergy,delta,resEnergy); |
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| 337 | G4double occupNb = (*(occupationNumber->find(iZ)->second))[iosc]; |
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| 338 | stoppingPowerForElement += occupNb*constant*S1; |
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| 339 | } |
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| 340 | |
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| 341 | sPower += stoppingPowerForElement*theAtomNumDensityVector[i]; |
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| 342 | } |
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| 343 | if (verboseLevel > 2) |
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| 344 | { |
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| 345 | G4cout << "G4PenelopeIonisationModel " << G4endl; |
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| 346 | G4cout << "Stopping power < " << cutEnergy/keV << " keV at " << |
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| 347 | kineticEnergy/keV << " keV = " << sPower/(keV/mm) << " keV/mm" << G4endl; |
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| 348 | } |
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| 349 | return sPower; |
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| 350 | } |
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| 351 | |
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| 352 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 353 | |
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| 354 | void G4PenelopeIonisationModel::SampleSecondaries(std::vector<G4DynamicParticle*>* fvect, |
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| 355 | const G4MaterialCutsCouple* couple, |
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| 356 | const G4DynamicParticle* aDynamicParticle, |
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[1055] | 357 | G4double cutE, G4double) |
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[968] | 358 | { |
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| 359 | // Penelope model to sample the final state following an hard inelastic interaction. |
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| 360 | // It makes use of the Generalised Oscillator Strength (GOS) model from |
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| 361 | // D. Liljequist, J. Phys. D: Appl. Phys. 16 (1983) 1567 |
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| 362 | // |
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| 363 | // The GOS model is used to calculate the individual cross sections for all |
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| 364 | // the atomic oscillators coming in the play, taking into account the three |
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| 365 | // contributions (distant longitudinal collisions, distant transverse collisions and |
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| 366 | // close collisions). Then the target shell and the interaction channel are |
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| 367 | // sampled. Final state of the delta-ray (energy, angle) are generated according |
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| 368 | // to the analytical distributions (dSigma/dW) for the selected interaction |
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| 369 | // channels. |
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| 370 | // For e-, the maximum energy for the delta-ray is initialEnergy/2. (because |
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| 371 | // particles are indistinghusbable), while it is the full initialEnergy for |
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| 372 | // e+. |
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| 373 | // The efficiency of the random sampling algorithm (e.g. for close collisions) |
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| 374 | // decreases when initial and cutoff energy increase (e.g. 87% for 10-keV primary |
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| 375 | // and 1 keV threshold, 99% for 10-MeV primary and 10-keV threshold). |
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| 376 | // Differential cross sections have a different form for e+ and e-. |
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| 377 | // |
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| 378 | // WARNING: The model provides an _average_ description of inelastic collisions. |
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| 379 | // Anyway, the energy spectrum associated to distant excitations of a given |
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| 380 | // atomic shell is approximated as a single resonance. The simulated energy spectra |
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| 381 | // show _unphysical_ narrow peaks at energies that are multiple of the shell |
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| 382 | // resonance energies. The spurious speaks are automatically smoothed out after |
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| 383 | // multiple inelastic collisions. |
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| 384 | // |
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| 385 | // The model determines also the original shell from which the delta-ray is expelled, |
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| 386 | // in order to produce fluorescence de-excitation (from G4DeexcitationManager) |
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| 387 | // |
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| 388 | // Fermi density correction is calculated analytically according to |
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| 389 | // U. Fano, Ann. Rev. Nucl. Sci. 13 (1963),1 |
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| 390 | |
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| 391 | if (verboseLevel > 3) |
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| 392 | G4cout << "Calling SamplingSecondaries() of G4PenelopeIonisationModel" << G4endl; |
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| 393 | |
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| 394 | G4double kineticEnergy0 = aDynamicParticle->GetKineticEnergy(); |
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| 395 | const G4ParticleDefinition* theParticle = aDynamicParticle->GetDefinition(); |
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| 396 | |
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[1055] | 397 | if (kineticEnergy0 <= fIntrinsicLowEnergyLimit) |
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[968] | 398 | { |
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| 399 | fParticleChange->SetProposedKineticEnergy(0.); |
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| 400 | fParticleChange->ProposeLocalEnergyDeposit(kineticEnergy0); |
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| 401 | return ; |
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| 402 | } |
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| 403 | const G4double electronVolumeDensity = |
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| 404 | couple->GetMaterial()->GetTotNbOfElectPerVolume(); |
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| 405 | G4ParticleMomentum particleDirection0 = aDynamicParticle->GetMomentumDirection(); |
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| 406 | |
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| 407 | //Initialise final-state variables. The proper values will be set by the methods |
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| 408 | // CalculateDiscreteForElectrons() and CalculateDiscreteForPositrons() |
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| 409 | kineticEnergy1=kineticEnergy0; |
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| 410 | cosThetaPrimary=1.0; |
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| 411 | energySecondary=0.0; |
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| 412 | cosThetaSecondary=1.0; |
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| 413 | |
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| 414 | // Select randomly one element in the current material |
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| 415 | if (verboseLevel > 2) |
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| 416 | G4cout << "Going to select element in " << couple->GetMaterial()->GetName() << G4endl; |
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| 417 | |
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| 418 | //Use sampler of G4CrossSectionHandler for now |
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| 419 | // atom can be selected effitiantly if element selectors are initialised |
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| 420 | //const G4Element* anElement = SelectRandomAtom(couple,theParticle,kineticEnergy0); |
---|
| 421 | |
---|
| 422 | G4int iZ = SampleRandomAtom(couple,kineticEnergy0); |
---|
| 423 | |
---|
| 424 | const G4ProductionCutsTable* theCoupleTable= |
---|
| 425 | G4ProductionCutsTable::GetProductionCutsTable(); |
---|
| 426 | size_t indx = couple->GetIndex(); |
---|
| 427 | G4double cutG = (*(theCoupleTable->GetEnergyCutsVector(0)))[indx]; |
---|
| 428 | |
---|
| 429 | if (verboseLevel > 2) |
---|
| 430 | G4cout << "Selected Z = " << iZ << G4endl; |
---|
| 431 | |
---|
| 432 | // The method CalculateDiscreteForXXXX() set the private variables: |
---|
| 433 | // kineticEnergy1 = energy of the primary electron/positron after the interaction |
---|
| 434 | // cosThetaPrimary = std::cos(theta) of the primary after the interaction |
---|
| 435 | // energySecondary = energy of the secondary electron |
---|
| 436 | // cosThetaSecondary = std::cos(theta) of the secondary |
---|
| 437 | if (theParticle == G4Electron::Electron()) |
---|
| 438 | CalculateDiscreteForElectrons(kineticEnergy0,cutE,iZ,electronVolumeDensity); |
---|
| 439 | else if (theParticle == G4Positron::Positron()) |
---|
| 440 | CalculateDiscreteForPositrons(kineticEnergy0,cutE,iZ,electronVolumeDensity); |
---|
| 441 | |
---|
| 442 | // if (energySecondary == 0) return; |
---|
| 443 | |
---|
| 444 | //Update the primary particle |
---|
| 445 | G4double sint = std::sqrt(1. - cosThetaPrimary*cosThetaPrimary); |
---|
| 446 | G4double phi = twopi * G4UniformRand(); |
---|
| 447 | G4double dirx = sint * std::cos(phi); |
---|
| 448 | G4double diry = sint * std::sin(phi); |
---|
| 449 | G4double dirz = cosThetaPrimary; |
---|
| 450 | |
---|
| 451 | G4ThreeVector electronDirection1(dirx,diry,dirz); |
---|
| 452 | electronDirection1.rotateUz(particleDirection0); |
---|
| 453 | |
---|
| 454 | if (kineticEnergy1 > 0) |
---|
| 455 | { |
---|
| 456 | fParticleChange->ProposeMomentumDirection(electronDirection1); |
---|
| 457 | fParticleChange->SetProposedKineticEnergy(kineticEnergy1); |
---|
| 458 | } |
---|
| 459 | else |
---|
| 460 | { |
---|
[1055] | 461 | fParticleChange->SetProposedKineticEnergy(0.); |
---|
[968] | 462 | } |
---|
| 463 | |
---|
| 464 | //Generate the delta ray |
---|
| 465 | G4int iosc2 = 0; |
---|
| 466 | G4double ioniEnergy = 0.0; |
---|
| 467 | if (iOsc > 0) { |
---|
| 468 | ioniEnergy=(*(ionizationEnergy->find(iZ)->second))[iOsc]; |
---|
| 469 | iosc2 = (ionizationEnergy->find(iZ)->second->size()) - iOsc; //they are in reversed order |
---|
| 470 | } |
---|
| 471 | |
---|
| 472 | const G4AtomicTransitionManager* transitionManager = G4AtomicTransitionManager::Instance(); |
---|
| 473 | G4double bindingEnergy = 0.0; |
---|
| 474 | G4int shellId = 0; |
---|
| 475 | if (iOsc > 0) |
---|
| 476 | { |
---|
| 477 | const G4AtomicShell* shell = transitionManager->Shell(iZ,iosc2-1); // Modified by Alf |
---|
| 478 | bindingEnergy = shell->BindingEnergy(); |
---|
| 479 | shellId = shell->ShellId(); |
---|
| 480 | } |
---|
| 481 | |
---|
| 482 | G4double ionEnergy = bindingEnergy; //energy spent to ionise the atom according to G4dabatase |
---|
| 483 | G4double eKineticEnergy = energySecondary; |
---|
| 484 | |
---|
| 485 | //This is an awful thing: Penelope generates the fluorescence only for L and K shells |
---|
| 486 | //(i.e. Osc = 1 --> 4). For high-Z, the other shells can be quite relevant. In this case |
---|
| 487 | //one MUST ensure ''by hand'' the energy conservation. Then there is the other problem that |
---|
| 488 | //the fluorescence database of Penelope doesn not match that of Geant4. |
---|
| 489 | |
---|
| 490 | G4double energyBalance = kineticEnergy0 - kineticEnergy1 - energySecondary; //Penelope Balance |
---|
| 491 | |
---|
| 492 | if (std::abs(energyBalance) < 1*eV) |
---|
| 493 | //in this case Penelope didn't subtract the fluorescence energy: do here by hand |
---|
| 494 | eKineticEnergy = energySecondary - bindingEnergy; |
---|
| 495 | else |
---|
| 496 | //Penelope subtracted the fluorescence, but one has to match the databases |
---|
| 497 | eKineticEnergy = energySecondary+ioniEnergy-bindingEnergy; |
---|
[1055] | 498 | |
---|
[968] | 499 | G4double localEnergyDeposit = ionEnergy; |
---|
| 500 | G4double energyInFluorescence = 0.0*eV; |
---|
| 501 | |
---|
[1055] | 502 | if(DeexcitationFlag() && iZ > 5) |
---|
[968] | 503 | { |
---|
[1055] | 504 | if (ionEnergy > cutG || ionEnergy > cutE) |
---|
[968] | 505 | { |
---|
[1055] | 506 | deexcitationManager.SetCutForSecondaryPhotons(cutG); |
---|
| 507 | deexcitationManager.SetCutForAugerElectrons(cutE); |
---|
| 508 | std::vector<G4DynamicParticle*> *photonVector = |
---|
| 509 | deexcitationManager.GenerateParticles(iZ,shellId); |
---|
| 510 | //Check for secondaries |
---|
| 511 | if(photonVector) |
---|
[968] | 512 | { |
---|
[1055] | 513 | for (size_t k=0;k<photonVector->size();k++) |
---|
[968] | 514 | { |
---|
[1055] | 515 | G4DynamicParticle* aPhoton = (*photonVector)[k]; |
---|
| 516 | if (aPhoton) |
---|
[968] | 517 | { |
---|
[1055] | 518 | G4double itsEnergy = aPhoton->GetKineticEnergy(); |
---|
| 519 | if (itsEnergy <= localEnergyDeposit) |
---|
| 520 | { |
---|
| 521 | if(aPhoton->GetDefinition() == G4Gamma::Gamma()) |
---|
| 522 | energyInFluorescence += itsEnergy; |
---|
| 523 | localEnergyDeposit -= itsEnergy; |
---|
| 524 | fvect->push_back(aPhoton); |
---|
| 525 | } |
---|
| 526 | else |
---|
| 527 | { |
---|
| 528 | delete aPhoton; |
---|
| 529 | (*photonVector)[k] = 0; |
---|
| 530 | } |
---|
[968] | 531 | } |
---|
| 532 | } |
---|
[1055] | 533 | delete photonVector; |
---|
[968] | 534 | } |
---|
| 535 | } |
---|
| 536 | } |
---|
| 537 | |
---|
| 538 | // Generate the delta ray |
---|
| 539 | G4double sin2 = std::sqrt(1. - cosThetaSecondary*cosThetaSecondary); |
---|
| 540 | G4double phi2 = twopi * G4UniformRand(); |
---|
| 541 | |
---|
| 542 | G4double xEl = sin2 * std::cos(phi2); |
---|
| 543 | G4double yEl = sin2 * std::sin(phi2); |
---|
| 544 | G4double zEl = cosThetaSecondary; |
---|
| 545 | G4ThreeVector eDirection(xEl,yEl,zEl); //electron direction |
---|
| 546 | eDirection.rotateUz(particleDirection0); |
---|
| 547 | |
---|
| 548 | G4DynamicParticle* deltaElectron = new G4DynamicParticle (G4Electron::Electron(), |
---|
| 549 | eDirection,eKineticEnergy) ; |
---|
| 550 | fvect->push_back(deltaElectron); |
---|
| 551 | |
---|
| 552 | if (localEnergyDeposit < 0) |
---|
| 553 | { |
---|
| 554 | G4cout << "WARNING-" |
---|
| 555 | << "G4PenelopeIonisationModel::SampleSecondaries - Negative energy deposit" |
---|
| 556 | << G4endl; |
---|
| 557 | localEnergyDeposit=0.; |
---|
| 558 | } |
---|
| 559 | fParticleChange->ProposeLocalEnergyDeposit(localEnergyDeposit); |
---|
| 560 | |
---|
| 561 | if (verboseLevel > 1) |
---|
| 562 | { |
---|
| 563 | G4cout << "-----------------------------------------------------------" << G4endl; |
---|
| 564 | G4cout << "Energy balance from G4PenelopeIonisation" << G4endl; |
---|
| 565 | G4cout << "Incoming primary energy: " << kineticEnergy0/keV << " keV" << G4endl; |
---|
| 566 | G4cout << "-----------------------------------------------------------" << G4endl; |
---|
| 567 | G4cout << "Outgoing primary energy: " << kineticEnergy1/keV << " keV" << G4endl; |
---|
| 568 | G4cout << "Delta ray " << eKineticEnergy/keV << " keV" << G4endl; |
---|
| 569 | G4cout << "Fluorescence: " << energyInFluorescence/keV << " keV" << G4endl; |
---|
| 570 | G4cout << "Local energy deposit " << localEnergyDeposit/keV << " keV" << G4endl; |
---|
| 571 | G4cout << "Total final state: " << (eKineticEnergy+energyInFluorescence+kineticEnergy1+ |
---|
| 572 | localEnergyDeposit)/keV << |
---|
| 573 | " keV" << G4endl; |
---|
| 574 | G4cout << "-----------------------------------------------------------" << G4endl; |
---|
| 575 | } |
---|
| 576 | if (verboseLevel > 0) |
---|
| 577 | { |
---|
| 578 | G4double energyDiff = std::fabs(eKineticEnergy+energyInFluorescence+kineticEnergy1+ |
---|
| 579 | localEnergyDeposit-kineticEnergy0); |
---|
| 580 | if (energyDiff > 0.05*keV) |
---|
| 581 | G4cout << "Warning from G4PenelopeIonisation: problem with energy conservation: " << |
---|
| 582 | (eKineticEnergy+energyInFluorescence+kineticEnergy1+localEnergyDeposit)/keV << |
---|
| 583 | " keV (final) vs. " << |
---|
| 584 | kineticEnergy0/keV << " keV (initial)" << G4endl; |
---|
| 585 | } |
---|
| 586 | } |
---|
| 587 | |
---|
| 588 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
| 589 | |
---|
| 590 | void G4PenelopeIonisationModel::ReadData() |
---|
| 591 | { |
---|
| 592 | if (verboseLevel > 2) |
---|
| 593 | { |
---|
| 594 | G4cout << "Data from G4PenelopeIonisationModel read " << G4endl; |
---|
| 595 | } |
---|
| 596 | char* path = getenv("G4LEDATA"); |
---|
| 597 | if (!path) |
---|
| 598 | { |
---|
| 599 | G4String excep = "G4PenelopeIonisationModel - G4LEDATA environment variable not set!"; |
---|
| 600 | G4Exception(excep); |
---|
| 601 | } |
---|
| 602 | G4String pathString(path); |
---|
| 603 | G4String pathFile = pathString + "/penelope/ion-pen.dat"; |
---|
| 604 | std::ifstream file(pathFile); |
---|
| 605 | |
---|
| 606 | if (!file.is_open()) |
---|
| 607 | { |
---|
| 608 | G4String excep = "G4PenelopeIonisationModel - data file " + pathFile + " not found!"; |
---|
| 609 | G4Exception(excep); |
---|
| 610 | } |
---|
| 611 | |
---|
| 612 | if (!ionizationEnergy || !resonanceEnergy || !occupationNumber || !shellFlag) |
---|
| 613 | { |
---|
| 614 | G4String excep = "G4PenelopeIonisationModel: problem with reading data from file"; |
---|
| 615 | G4Exception(excep); |
---|
| 616 | } |
---|
| 617 | |
---|
| 618 | G4int Z=1,nLevels=0; |
---|
| 619 | G4int test,test1; |
---|
| 620 | |
---|
| 621 | do{ |
---|
| 622 | G4DataVector* occVector = new G4DataVector; |
---|
| 623 | G4DataVector* ionEVector = new G4DataVector; |
---|
| 624 | G4DataVector* resEVector = new G4DataVector; |
---|
| 625 | G4DataVector* shellIndVector = new G4DataVector; |
---|
| 626 | file >> Z >> nLevels; |
---|
| 627 | G4double a1,a2,a3,a4; |
---|
| 628 | G4int k1,k2,k3; |
---|
| 629 | for (G4int h=0;h<nLevels;h++) |
---|
| 630 | { |
---|
| 631 | //index,occup number,ion energy,res energy,fj0,kz,shell flag |
---|
| 632 | file >> k1 >> a1 >> a2 >> a3 >> a4 >> k2 >> k3; |
---|
| 633 | //Make explicit unit of measurements for ionisation and resonance energy, |
---|
| 634 | // which is MeV |
---|
| 635 | a2 *= MeV; |
---|
| 636 | a3 *= MeV; |
---|
| 637 | // |
---|
| 638 | occVector->push_back(a1); |
---|
| 639 | ionEVector->push_back(a2); |
---|
| 640 | resEVector->push_back(a3); |
---|
| 641 | shellIndVector->push_back((G4double) k3); |
---|
| 642 | } |
---|
| 643 | //Ok, done for element Z |
---|
| 644 | occupationNumber->insert(std::make_pair(Z,occVector)); |
---|
| 645 | ionizationEnergy->insert(std::make_pair(Z,ionEVector)); |
---|
| 646 | resonanceEnergy->insert(std::make_pair(Z,resEVector)); |
---|
| 647 | shellFlag->insert(std::make_pair(Z,shellIndVector)); |
---|
| 648 | file >> test >> test1; //-1 -1 close the data for each Z |
---|
| 649 | if (test > 0) { |
---|
| 650 | G4String excep = "G4PenelopeIonisationModel - data file corrupted!"; |
---|
| 651 | G4Exception(excep); |
---|
| 652 | } |
---|
| 653 | }while (test != -2); //the very last Z is closed with -2 instead of -1 |
---|
| 654 | } |
---|
| 655 | |
---|
| 656 | |
---|
| 657 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
| 658 | |
---|
| 659 | G4double G4PenelopeIonisationModel::CalculateDeltaFermi(G4double kinEnergy ,G4int Z, |
---|
| 660 | G4double electronVolumeDensity) |
---|
| 661 | { |
---|
| 662 | G4double plasmaEnergyCoefficient = 1.377e-39*(MeV*MeV*m3); //(e*hbar)^2/(epsilon0*electron_mass) |
---|
| 663 | G4double plasmaEnergySquared = plasmaEnergyCoefficient*electronVolumeDensity; |
---|
| 664 | // std::sqrt(plasmaEnergySquared) is the plasma energy of the solid (MeV) |
---|
| 665 | G4double gam = 1.0+kinEnergy/electron_mass_c2; |
---|
| 666 | G4double gam2=gam*gam; |
---|
| 667 | G4double delta = 0.0; |
---|
| 668 | |
---|
| 669 | //Density effect |
---|
| 670 | G4double TST = ((G4double) Z)/(gam2*plasmaEnergySquared); |
---|
| 671 | |
---|
| 672 | G4double wl2 = 0.0; |
---|
| 673 | G4double fdel=0.0; |
---|
| 674 | G4double wr=0; |
---|
| 675 | size_t nbOsc = resonanceEnergy->find(Z)->second->size(); |
---|
| 676 | for(size_t i=0;i<nbOsc;i++) |
---|
| 677 | { |
---|
| 678 | G4int occupNb = (G4int) (*(occupationNumber->find(Z)->second))[i]; |
---|
| 679 | wr = (*(resonanceEnergy->find(Z)->second))[i]; |
---|
| 680 | fdel += occupNb/(wr*wr+wl2); |
---|
| 681 | } |
---|
| 682 | if (fdel < TST) return delta; |
---|
| 683 | G4double help1 = (*(resonanceEnergy->find(Z)->second))[nbOsc-1]; |
---|
| 684 | wl2 = help1*help1; |
---|
| 685 | do{ |
---|
| 686 | wl2=wl2*2.0; |
---|
| 687 | fdel = 0.0; |
---|
| 688 | for (size_t ii=0;ii<nbOsc;ii++){ |
---|
| 689 | G4int occupNb = (G4int) (*(occupationNumber->find(Z)->second))[ii]; |
---|
| 690 | wr = (*(resonanceEnergy->find(Z)->second))[ii]; |
---|
| 691 | fdel += occupNb/(wr*wr+wl2); |
---|
| 692 | } |
---|
| 693 | }while (fdel > TST); |
---|
| 694 | G4double wl2l=0.0; |
---|
| 695 | G4double wl2u = wl2; |
---|
| 696 | G4double control = 0.0; |
---|
| 697 | do{ |
---|
| 698 | wl2=0.5*(wl2l+wl2u); |
---|
| 699 | fdel = 0.0; |
---|
| 700 | for (size_t jj=0;jj<nbOsc;jj++){ |
---|
| 701 | G4int occupNb = (G4int) (*(occupationNumber->find(Z)->second))[jj]; |
---|
| 702 | wr = (*(resonanceEnergy->find(Z)->second))[jj]; |
---|
| 703 | fdel += occupNb/(wr*wr+wl2); |
---|
| 704 | } |
---|
| 705 | if (fdel > TST) |
---|
| 706 | wl2l = wl2; |
---|
| 707 | else |
---|
| 708 | wl2u = wl2; |
---|
| 709 | control = wl2u-wl2l-wl2*1e-12; |
---|
| 710 | }while(control>0); |
---|
| 711 | |
---|
| 712 | //Density correction effect |
---|
| 713 | for (size_t kk=0;kk<nbOsc;kk++){ |
---|
| 714 | G4int occupNb = (G4int) (*(occupationNumber->find(Z)->second))[kk]; |
---|
| 715 | wr = (*(resonanceEnergy->find(Z)->second))[kk]; |
---|
| 716 | delta += occupNb*std::log(1.0+wl2/(wr*wr)); |
---|
| 717 | } |
---|
| 718 | delta = (delta/((G4double) Z))-wl2/(gam2*plasmaEnergySquared); |
---|
| 719 | return delta; |
---|
| 720 | } |
---|
| 721 | |
---|
| 722 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
| 723 | |
---|
[1055] | 724 | void |
---|
| 725 | G4PenelopeIonisationModel::CalculateDiscreteForElectrons(G4double kinEnergy, |
---|
| 726 | G4double cutoffEnergy, |
---|
| 727 | G4int Z, |
---|
| 728 | G4double electronVolumeDensity) |
---|
[968] | 729 | { |
---|
| 730 | if (verboseLevel > 2) |
---|
| 731 | G4cout << "Entering in CalculateDiscreteForElectrons() for energy " << |
---|
| 732 | kinEnergy/keV << " keV " << G4endl; |
---|
| 733 | |
---|
| 734 | //Initialization of variables to be calculated in this routine |
---|
| 735 | kineticEnergy1=kinEnergy; |
---|
| 736 | cosThetaPrimary=1.0; |
---|
| 737 | energySecondary=0.0; |
---|
| 738 | cosThetaSecondary=1.0; |
---|
| 739 | iOsc=-1; |
---|
| 740 | |
---|
| 741 | //constants |
---|
| 742 | G4double rb=kinEnergy+2.0*electron_mass_c2; |
---|
| 743 | G4double gamma = 1.0+kinEnergy/electron_mass_c2; |
---|
| 744 | G4double gamma2 = gamma*gamma; |
---|
| 745 | G4double beta2 = (gamma2-1.0)/gamma2; |
---|
| 746 | G4double amol = (gamma-1.0)*(gamma-1.0)/gamma2; |
---|
| 747 | G4double cps = kinEnergy*rb; |
---|
| 748 | G4double cp = std::sqrt(cps); |
---|
| 749 | |
---|
| 750 | G4double delta = CalculateDeltaFermi(kinEnergy,Z,electronVolumeDensity); |
---|
| 751 | G4double distantTransvCS0 = std::max(std::log(gamma2)-beta2-delta,0.0); |
---|
| 752 | |
---|
| 753 | G4double rl,rl1; |
---|
| 754 | |
---|
| 755 | if (cutoffEnergy > kinEnergy) return; //delta rays are not generated |
---|
| 756 | |
---|
| 757 | G4DataVector* qm = new G4DataVector(); |
---|
| 758 | G4DataVector* cumulHardCS = new G4DataVector(); |
---|
| 759 | std::vector<G4int> *typeOfInteraction = new std::vector<G4int>; |
---|
| 760 | G4DataVector* nbOfLevel = new G4DataVector(); |
---|
| 761 | |
---|
| 762 | //Hard close collisions with outer shells |
---|
| 763 | G4double wmaxc = 0.5*kinEnergy; |
---|
| 764 | G4double closeCS0 = 0.0; |
---|
| 765 | G4double closeCS = 0.0; |
---|
| 766 | if (cutoffEnergy>0.1*eV) |
---|
| 767 | { |
---|
| 768 | rl=cutoffEnergy/kinEnergy; |
---|
| 769 | rl1=1.0-rl; |
---|
| 770 | if (rl < 0.5) |
---|
| 771 | closeCS0 = (amol*(0.5-rl)+(1.0/rl)-(1.0/rl1)+(1.0-amol)*std::log(rl/rl1))/kinEnergy; |
---|
| 772 | } |
---|
| 773 | |
---|
| 774 | // Cross sections for the different oscillators |
---|
| 775 | |
---|
| 776 | // totalHardCS contains the cumulative hard interaction cross section for the different |
---|
| 777 | // excitable levels and the different interaction channels (close, distant, etc.), |
---|
| 778 | // i.e. |
---|
| 779 | // cumulHardCS[0] = 0.0 |
---|
| 780 | // cumulHardCS[1] = 1st excitable level (distant longitudinal only) |
---|
| 781 | // cumulHardCS[2] = 1st excitable level (distant longitudinal + transverse) |
---|
| 782 | // cumulHardCS[3] = 1st excitable level (distant longitudinal + transverse + close) |
---|
| 783 | // cumulHardCS[4] = 1st excitable level (all channels) + 2nd excitable level (distant long only) |
---|
| 784 | // etc. |
---|
| 785 | // This is used for sampling the atomic level which is ionised and the channel of the |
---|
| 786 | // interaction. |
---|
| 787 | // |
---|
| 788 | // For each index iFill of the cumulHardCS vector, |
---|
| 789 | // nbOfLevel[iFill] contains the current excitable atomic level and |
---|
| 790 | // typeOfInteraction[iFill] contains the current interaction channel, with the legenda: |
---|
| 791 | // 1 = distant longitudinal interaction |
---|
| 792 | // 2 = distant transverse interaction |
---|
| 793 | // 3 = close collision |
---|
| 794 | // 4 = close collision with outer shells (in this case nbOfLevel < 0 --> no binding energy) |
---|
| 795 | |
---|
| 796 | |
---|
| 797 | G4int nOscil = ionizationEnergy->find(Z)->second->size(); |
---|
| 798 | G4double totalHardCS = 0.0; |
---|
| 799 | G4double involvedElectrons = 0.0; |
---|
| 800 | for (G4int i=0;i<nOscil;i++){ |
---|
| 801 | G4double wi = (*(resonanceEnergy->find(Z)->second))[i]; |
---|
| 802 | G4int occupNb = (G4int) (*(occupationNumber->find(Z)->second))[i]; |
---|
| 803 | |
---|
| 804 | //Distant excitations |
---|
| 805 | if (wi>cutoffEnergy && wi<kinEnergy) |
---|
| 806 | { |
---|
| 807 | if (wi>(1e-6*kinEnergy)) |
---|
| 808 | { |
---|
| 809 | G4double cpp=std::sqrt((kinEnergy-wi)*(kinEnergy-wi+2.0*electron_mass_c2)); |
---|
| 810 | qm->push_back(std::sqrt((cp-cpp)*(cp-cpp)+electron_mass_c2*electron_mass_c2)-electron_mass_c2); |
---|
| 811 | } |
---|
| 812 | else |
---|
| 813 | { |
---|
| 814 | qm->push_back((wi*wi)/(beta2*2.0*electron_mass_c2)); |
---|
| 815 | } |
---|
| 816 | if ((*qm)[i] < wi) |
---|
| 817 | { |
---|
| 818 | |
---|
| 819 | G4double distantLongitCS = occupNb*std::log(wi*((*qm)[i]+2.0*electron_mass_c2)/ |
---|
| 820 | ((*qm)[i]*(wi+2.0*electron_mass_c2)))/wi; |
---|
| 821 | cumulHardCS->push_back(totalHardCS); |
---|
| 822 | typeOfInteraction->push_back(1); //distant longitudinal |
---|
| 823 | nbOfLevel->push_back((G4double) i); //only excitable level are counted |
---|
| 824 | totalHardCS += distantLongitCS; |
---|
| 825 | |
---|
| 826 | G4double distantTransvCS = occupNb*distantTransvCS0/wi; |
---|
| 827 | |
---|
| 828 | cumulHardCS->push_back(totalHardCS); |
---|
| 829 | typeOfInteraction->push_back(2); //distant tranverse |
---|
| 830 | nbOfLevel->push_back((G4double) i); |
---|
| 831 | totalHardCS += distantTransvCS; |
---|
| 832 | } |
---|
| 833 | } |
---|
| 834 | else |
---|
| 835 | qm->push_back(wi); |
---|
| 836 | |
---|
| 837 | //close collisions |
---|
| 838 | if(wi < wmaxc) |
---|
| 839 | { |
---|
| 840 | if (wi < cutoffEnergy) |
---|
| 841 | involvedElectrons += occupNb; |
---|
| 842 | else |
---|
| 843 | { |
---|
| 844 | rl=wi/kinEnergy; |
---|
| 845 | rl1=1.0-rl; |
---|
| 846 | closeCS = occupNb*(amol*(0.5-rl)+(1.0/rl)-(1.0/rl1)+(1.0-amol)*std::log(rl/rl1))/kinEnergy; |
---|
| 847 | cumulHardCS->push_back(totalHardCS); |
---|
| 848 | typeOfInteraction->push_back(3); //close |
---|
| 849 | nbOfLevel->push_back((G4double) i); |
---|
| 850 | totalHardCS += closeCS; |
---|
| 851 | } |
---|
| 852 | } |
---|
| 853 | } // loop on the levels |
---|
| 854 | |
---|
| 855 | cumulHardCS->push_back(totalHardCS); |
---|
| 856 | typeOfInteraction->push_back(4); //close interaction with outer shells |
---|
| 857 | nbOfLevel->push_back(-1.0); |
---|
| 858 | totalHardCS += involvedElectrons*closeCS0; |
---|
| 859 | cumulHardCS->push_back(totalHardCS); //this is the final value of the totalHardCS |
---|
| 860 | |
---|
| 861 | if (totalHardCS < 1e-30) { |
---|
| 862 | kineticEnergy1=kinEnergy; |
---|
| 863 | cosThetaPrimary=1.0; |
---|
| 864 | energySecondary=0.0; |
---|
| 865 | cosThetaSecondary=0.0; |
---|
| 866 | iOsc=-1; |
---|
| 867 | delete qm; |
---|
| 868 | delete cumulHardCS; |
---|
| 869 | delete typeOfInteraction; |
---|
| 870 | delete nbOfLevel; |
---|
| 871 | return; |
---|
| 872 | } |
---|
| 873 | |
---|
| 874 | //Testing purposes |
---|
| 875 | if (verboseLevel > 6) |
---|
| 876 | { |
---|
| 877 | for (size_t t=0;t<cumulHardCS->size();t++) |
---|
| 878 | G4cout << (*cumulHardCS)[t] << " " << (*typeOfInteraction)[t] << |
---|
| 879 | " " << (*nbOfLevel)[t] << G4endl; |
---|
| 880 | } |
---|
| 881 | |
---|
| 882 | //Selection of the active oscillator on the basis of the cumulative cross sections |
---|
| 883 | G4double TST = totalHardCS*G4UniformRand(); |
---|
| 884 | G4int is=0; |
---|
| 885 | G4int js= nbOfLevel->size(); |
---|
| 886 | do{ |
---|
| 887 | G4int it=(is+js)/2; |
---|
| 888 | if (TST > (*cumulHardCS)[it]) is=it; |
---|
| 889 | if (TST <= (*cumulHardCS)[it]) js=it; |
---|
| 890 | }while((js-is) > 1); |
---|
| 891 | |
---|
| 892 | G4double UII=0.0; |
---|
| 893 | G4double rkc=cutoffEnergy/kinEnergy; |
---|
| 894 | G4double dde; |
---|
| 895 | G4int kks; |
---|
| 896 | |
---|
| 897 | G4int sampledInteraction = (*typeOfInteraction)[is]; |
---|
| 898 | iOsc = (G4int) (*nbOfLevel)[is]; |
---|
| 899 | |
---|
| 900 | if (verboseLevel > 4) |
---|
| 901 | G4cout << "Chosen interaction #:" << sampledInteraction << " on level " << iOsc << G4endl; |
---|
| 902 | |
---|
| 903 | //Generates the final state according to the sampled level and |
---|
| 904 | //interaction channel |
---|
| 905 | |
---|
| 906 | if (sampledInteraction == 1) //Hard distant longitudinal collisions |
---|
| 907 | { |
---|
| 908 | dde= (*(resonanceEnergy->find(Z)->second))[iOsc]; |
---|
| 909 | kineticEnergy1=kinEnergy-dde; |
---|
| 910 | G4double qs=(*qm)[iOsc]/(1.0+((*qm)[iOsc]/(2.0*electron_mass_c2))); |
---|
| 911 | G4double q=qs/(std::pow((qs/dde)*(1.0+(0.5*dde/electron_mass_c2)),G4UniformRand())-(0.5*qs/electron_mass_c2)); |
---|
| 912 | G4double qtrev = q*(q+2.0*electron_mass_c2); |
---|
| 913 | G4double cpps = kineticEnergy1*(kineticEnergy1+2.0*electron_mass_c2); |
---|
| 914 | cosThetaPrimary = (cpps+cps-qtrev)/(2.0*cp*std::sqrt(cpps)); |
---|
| 915 | if (cosThetaPrimary>1.0) cosThetaPrimary=1.0; |
---|
| 916 | //Energy and emission angle of the delta ray |
---|
| 917 | kks = (G4int) (*(shellFlag->find(Z)->second))[iOsc]; |
---|
| 918 | //kks > 4 means that we are in an outer shell |
---|
| 919 | if (kks>4) |
---|
| 920 | energySecondary=dde; |
---|
| 921 | else |
---|
| 922 | energySecondary=dde-(*(ionizationEnergy->find(Z)->second))[iOsc]; |
---|
| 923 | |
---|
| 924 | cosThetaSecondary = 0.5*(dde*(kinEnergy+rb-dde)+qtrev)/std::sqrt(cps*qtrev); |
---|
| 925 | if (cosThetaSecondary>1.0) cosThetaSecondary=1.0; |
---|
| 926 | } |
---|
| 927 | else if (sampledInteraction == 2) //Hard distant transverse collisions |
---|
| 928 | { |
---|
| 929 | dde=(*(resonanceEnergy->find(Z)->second))[iOsc]; |
---|
| 930 | kineticEnergy1=kinEnergy-dde; |
---|
| 931 | cosThetaPrimary=1.0; |
---|
| 932 | //Energy and emission angle of the delta ray |
---|
| 933 | kks = (G4int) (*(shellFlag->find(Z)->second))[iOsc]; |
---|
| 934 | if (kks>4) |
---|
| 935 | { |
---|
| 936 | energySecondary=dde; |
---|
| 937 | } |
---|
| 938 | else |
---|
| 939 | { |
---|
| 940 | energySecondary=dde-(*(ionizationEnergy->find(Z)->second))[iOsc]; |
---|
| 941 | } |
---|
| 942 | cosThetaSecondary = 1.0; |
---|
| 943 | } |
---|
| 944 | else if (sampledInteraction == 3 || sampledInteraction == 4) //Close interaction |
---|
| 945 | { |
---|
| 946 | if (sampledInteraction == 4) //interaction with inner shells |
---|
| 947 | { |
---|
| 948 | UII=0.0; |
---|
| 949 | rkc = cutoffEnergy/kinEnergy; |
---|
| 950 | iOsc = -1; |
---|
| 951 | } |
---|
| 952 | else |
---|
| 953 | { |
---|
| 954 | kks = (G4int) (*(shellFlag->find(Z)->second))[iOsc]; |
---|
| 955 | if (kks > 4) { |
---|
| 956 | UII=0.0; |
---|
| 957 | } |
---|
| 958 | else |
---|
| 959 | { |
---|
| 960 | UII = (*(ionizationEnergy->find(Z)->second))[iOsc]; |
---|
| 961 | } |
---|
| 962 | rkc = (*(resonanceEnergy->find(Z)->second))[iOsc]/kinEnergy; |
---|
| 963 | } |
---|
| 964 | G4double A = 0.5*amol; |
---|
| 965 | G4double arkc = A*0.5*rkc; |
---|
| 966 | G4double phi,rk2,rk,rkf; |
---|
| 967 | do{ |
---|
| 968 | G4double fb = (1.0+arkc)*G4UniformRand(); |
---|
| 969 | if (fb<1.0) |
---|
| 970 | { |
---|
| 971 | rk=rkc/(1.0-fb*(1.0-(rkc*2.0))); |
---|
| 972 | } |
---|
| 973 | else{ |
---|
| 974 | rk = rkc+(fb-1.0)*(0.5-rkc)/arkc; |
---|
| 975 | } |
---|
| 976 | rk2 = rk*rk; |
---|
| 977 | rkf = rk/(1.0-rk); |
---|
| 978 | phi = 1.0+(rkf*rkf)-rkf+amol*(rk2+rkf); |
---|
| 979 | }while ((G4UniformRand()*(1.0+A*rk2)) > phi); |
---|
| 980 | //Energy and scattering angle (primary electron); |
---|
| 981 | kineticEnergy1 = kinEnergy*(1.0-rk); |
---|
| 982 | cosThetaPrimary = std::sqrt(kineticEnergy1*rb/(kinEnergy*(rb-(rk*kinEnergy)))); |
---|
| 983 | //Energy and scattering angle of the delta ray |
---|
| 984 | energySecondary = kinEnergy-kineticEnergy1-UII; |
---|
| 985 | cosThetaSecondary = std::sqrt(rk*kinEnergy*rb/(kinEnergy*(rk*kinEnergy+2.0*electron_mass_c2))); |
---|
| 986 | } |
---|
| 987 | else |
---|
| 988 | { |
---|
| 989 | G4String excep = "G4PenelopeIonisationModel - Error in the calculation of the final state"; |
---|
| 990 | G4Exception(excep); |
---|
| 991 | } |
---|
| 992 | |
---|
| 993 | delete qm; |
---|
| 994 | delete cumulHardCS; |
---|
| 995 | |
---|
| 996 | delete typeOfInteraction; |
---|
| 997 | delete nbOfLevel; |
---|
| 998 | |
---|
| 999 | return; |
---|
| 1000 | } |
---|
| 1001 | |
---|
| 1002 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
| 1003 | |
---|
[1055] | 1004 | void |
---|
| 1005 | G4PenelopeIonisationModel::CalculateDiscreteForPositrons(G4double kinEnergy, |
---|
| 1006 | G4double cutoffEnergy, |
---|
| 1007 | G4int Z, |
---|
| 1008 | G4double electronVolumeDensity) |
---|
[968] | 1009 | { |
---|
| 1010 | kineticEnergy1=kinEnergy; |
---|
| 1011 | cosThetaPrimary=1.0; |
---|
| 1012 | energySecondary=0.0; |
---|
| 1013 | cosThetaSecondary=1.0; |
---|
| 1014 | iOsc=-1; |
---|
| 1015 | //constants |
---|
| 1016 | G4double rb=kinEnergy+2.0*electron_mass_c2; |
---|
| 1017 | G4double gamma = 1.0+kinEnergy/electron_mass_c2; |
---|
| 1018 | G4double gamma2 = gamma*gamma; |
---|
| 1019 | G4double beta2 = (gamma2-1.0)/gamma2; |
---|
| 1020 | G4double amol = (gamma-1.0)*(gamma-1.0)/gamma2; |
---|
| 1021 | G4double cps = kinEnergy*rb; |
---|
| 1022 | G4double cp = std::sqrt(cps); |
---|
| 1023 | G4double help = (gamma+1.0)*(gamma+1.0); |
---|
| 1024 | G4double bha1 = amol*(2.0*help-1.0)/(gamma2-1.0); |
---|
| 1025 | G4double bha2 = amol*(3.0+1.0/help); |
---|
| 1026 | G4double bha3 = amol*2.0*gamma*(gamma-1.0)/help; |
---|
| 1027 | G4double bha4 = amol*(gamma-1.0)*(gamma-1.0)/help; |
---|
| 1028 | |
---|
| 1029 | G4double delta = CalculateDeltaFermi(kinEnergy,Z,electronVolumeDensity); |
---|
| 1030 | G4double distantTransvCS0 = std::max(std::log(gamma2)-beta2-delta,0.0); |
---|
| 1031 | |
---|
| 1032 | G4double rl,rl1; |
---|
| 1033 | |
---|
| 1034 | if (cutoffEnergy > kinEnergy) return; //delta rays are not generated |
---|
| 1035 | |
---|
| 1036 | G4DataVector* qm = new G4DataVector(); |
---|
| 1037 | G4DataVector* cumulHardCS = new G4DataVector(); |
---|
| 1038 | std::vector<G4int> *typeOfInteraction = new std::vector<G4int>; |
---|
| 1039 | G4DataVector* nbOfLevel = new G4DataVector(); |
---|
| 1040 | |
---|
| 1041 | |
---|
| 1042 | //Hard close collisions with outer shells |
---|
| 1043 | G4double wmaxc = kinEnergy; |
---|
| 1044 | G4double closeCS0 = 0.0; |
---|
| 1045 | G4double closeCS = 0.0; |
---|
| 1046 | if (cutoffEnergy>0.1*eV) |
---|
| 1047 | { |
---|
| 1048 | rl=cutoffEnergy/kinEnergy; |
---|
| 1049 | rl1=1.0-rl; |
---|
| 1050 | if (rl < 1.0) |
---|
| 1051 | closeCS0 = (((1.0/rl)-1.0) + bha1*std::log(rl) + bha2*rl1 |
---|
| 1052 | + (bha3/2.0)*((rl*rl)-1.0) |
---|
| 1053 | + (bha4/3.0)*(1.0-(rl*rl*rl)))/kinEnergy; |
---|
| 1054 | } |
---|
| 1055 | |
---|
| 1056 | // Cross sections for the different oscillators |
---|
| 1057 | |
---|
| 1058 | // totalHardCS contains the cumulative hard interaction cross section for the different |
---|
| 1059 | // excitable levels and the different interaction channels (close, distant, etc.), |
---|
| 1060 | // i.e. |
---|
| 1061 | // cumulHardCS[0] = 0.0 |
---|
| 1062 | // cumulHardCS[1] = 1st excitable level (distant longitudinal only) |
---|
| 1063 | // cumulHardCS[2] = 1st excitable level (distant longitudinal + transverse) |
---|
| 1064 | // cumulHardCS[3] = 1st excitable level (distant longitudinal + transverse + close) |
---|
| 1065 | // cumulHardCS[4] = 1st excitable level (all channels) + 2nd excitable level (distant long only) |
---|
| 1066 | // etc. |
---|
| 1067 | // This is used for sampling the atomic level which is ionised and the channel of the |
---|
| 1068 | // interaction. |
---|
| 1069 | // |
---|
| 1070 | // For each index iFill of the cumulHardCS vector, |
---|
| 1071 | // nbOfLevel[iFill] contains the current excitable atomic level and |
---|
| 1072 | // typeOfInteraction[iFill] contains the current interaction channel, with the legenda: |
---|
| 1073 | // 1 = distant longitudinal interaction |
---|
| 1074 | // 2 = distant transverse interaction |
---|
| 1075 | // 3 = close collision |
---|
| 1076 | // 4 = close collision with outer shells (in this case nbOfLevel < 0 --> no binding energy) |
---|
| 1077 | |
---|
| 1078 | |
---|
| 1079 | G4int nOscil = ionizationEnergy->find(Z)->second->size(); |
---|
| 1080 | G4double totalHardCS = 0.0; |
---|
| 1081 | G4double involvedElectrons = 0.0; |
---|
| 1082 | for (G4int i=0;i<nOscil;i++){ |
---|
| 1083 | G4double wi = (*(resonanceEnergy->find(Z)->second))[i]; |
---|
| 1084 | G4int occupNb = (G4int) (*(occupationNumber->find(Z)->second))[i]; |
---|
| 1085 | //Distant excitations |
---|
| 1086 | if (wi>cutoffEnergy && wi<kinEnergy) |
---|
| 1087 | { |
---|
| 1088 | if (wi>(1e-6*kinEnergy)){ |
---|
| 1089 | G4double cpp=std::sqrt((kinEnergy-wi)*(kinEnergy-wi+2.0*electron_mass_c2)); |
---|
| 1090 | qm->push_back(std::sqrt((cp-cpp)*(cp-cpp)+ electron_mass_c2 * electron_mass_c2)-electron_mass_c2); |
---|
| 1091 | } |
---|
| 1092 | else |
---|
| 1093 | { |
---|
| 1094 | qm->push_back(wi*wi/(beta2+2.0*electron_mass_c2)); |
---|
| 1095 | } |
---|
| 1096 | //verificare che quando arriva qui il vettore ha SEMPRE l'i-esimo elemento |
---|
| 1097 | if ((*qm)[i] < wi) |
---|
| 1098 | { |
---|
| 1099 | |
---|
| 1100 | G4double distantLongitCS = occupNb*std::log(wi*((*qm)[i]+2.0*electron_mass_c2)/ |
---|
| 1101 | ((*qm)[i]*(wi+2.0*electron_mass_c2)))/wi; |
---|
| 1102 | cumulHardCS->push_back(totalHardCS); |
---|
| 1103 | typeOfInteraction->push_back(1); //distant longitudinal |
---|
| 1104 | nbOfLevel->push_back((G4double) i); //only excitable level are counted |
---|
| 1105 | totalHardCS += distantLongitCS; |
---|
| 1106 | |
---|
| 1107 | G4double distantTransvCS = occupNb*distantTransvCS0/wi; |
---|
| 1108 | |
---|
| 1109 | cumulHardCS->push_back(totalHardCS); |
---|
| 1110 | typeOfInteraction->push_back(2); //distant tranverse |
---|
| 1111 | nbOfLevel->push_back((G4double) i); |
---|
| 1112 | totalHardCS += distantTransvCS; |
---|
| 1113 | } |
---|
| 1114 | } |
---|
| 1115 | else |
---|
| 1116 | qm->push_back(wi); |
---|
| 1117 | |
---|
| 1118 | //close collisions |
---|
| 1119 | if(wi < wmaxc) |
---|
| 1120 | { |
---|
| 1121 | if (wi < cutoffEnergy) { |
---|
| 1122 | involvedElectrons += occupNb; |
---|
| 1123 | } |
---|
| 1124 | else |
---|
| 1125 | { |
---|
| 1126 | rl=wi/kinEnergy; |
---|
| 1127 | rl1=1.0-rl; |
---|
| 1128 | closeCS = occupNb*(((1.0/rl)-1.0)+bha1*std::log(rl)+bha2*rl1 |
---|
| 1129 | + (bha3/2.0)*((rl*rl)-1.0) |
---|
| 1130 | + (bha4/3.0)*(1.0-(rl*rl*rl)))/kinEnergy; |
---|
| 1131 | cumulHardCS->push_back(totalHardCS); |
---|
| 1132 | typeOfInteraction->push_back(3); //close |
---|
| 1133 | nbOfLevel->push_back((G4double) i); |
---|
| 1134 | totalHardCS += closeCS; |
---|
| 1135 | } |
---|
| 1136 | } |
---|
| 1137 | } // loop on the levels |
---|
| 1138 | |
---|
| 1139 | cumulHardCS->push_back(totalHardCS); |
---|
| 1140 | typeOfInteraction->push_back(4); //close interaction with outer shells |
---|
| 1141 | nbOfLevel->push_back(-1.0); |
---|
| 1142 | totalHardCS += involvedElectrons*closeCS0; |
---|
| 1143 | cumulHardCS->push_back(totalHardCS); //this is the final value of the totalHardCS |
---|
| 1144 | |
---|
| 1145 | if (totalHardCS < 1e-30) { |
---|
| 1146 | kineticEnergy1=kinEnergy; |
---|
| 1147 | cosThetaPrimary=1.0; |
---|
| 1148 | energySecondary=0.0; |
---|
| 1149 | cosThetaSecondary=0.0; |
---|
| 1150 | iOsc=-1; |
---|
| 1151 | delete qm; |
---|
| 1152 | delete cumulHardCS; |
---|
| 1153 | delete typeOfInteraction; |
---|
| 1154 | delete nbOfLevel; |
---|
| 1155 | return; |
---|
| 1156 | } |
---|
| 1157 | |
---|
| 1158 | //Selection of the active oscillator on the basis of the cumulative cross sections |
---|
| 1159 | G4double TST = totalHardCS*G4UniformRand(); |
---|
| 1160 | G4int is=0; |
---|
| 1161 | G4int js= nbOfLevel->size(); |
---|
| 1162 | do{ |
---|
| 1163 | G4int it=(is+js)/2; |
---|
| 1164 | if (TST > (*cumulHardCS)[it]) is=it; |
---|
| 1165 | if (TST <= (*cumulHardCS)[it]) js=it; |
---|
| 1166 | }while((js-is) > 1); |
---|
| 1167 | |
---|
| 1168 | G4double UII=0.0; |
---|
| 1169 | G4double rkc=cutoffEnergy/kinEnergy; |
---|
| 1170 | G4double dde; |
---|
| 1171 | G4int kks; |
---|
| 1172 | |
---|
| 1173 | G4int sampledInteraction = (*typeOfInteraction)[is]; |
---|
| 1174 | iOsc = (G4int) (*nbOfLevel)[is]; |
---|
| 1175 | |
---|
| 1176 | //Generates the final state according to the sampled level and |
---|
| 1177 | //interaction channel |
---|
| 1178 | |
---|
| 1179 | if (sampledInteraction == 1) //Hard distant longitudinal collisions |
---|
| 1180 | { |
---|
| 1181 | dde= (*(resonanceEnergy->find(Z)->second))[iOsc]; |
---|
| 1182 | kineticEnergy1=kinEnergy-dde; |
---|
| 1183 | G4double qs=(*qm)[iOsc]/(1.0+((*qm)[iOsc]/(2.0*electron_mass_c2))); |
---|
| 1184 | G4double q=qs/(std::pow((qs/dde)*(1.0+(0.5*dde/electron_mass_c2)),G4UniformRand())-(0.5*qs/electron_mass_c2)); |
---|
| 1185 | G4double qtrev = q*(q+2.0*electron_mass_c2); |
---|
| 1186 | G4double cpps = kineticEnergy1*(kineticEnergy1+2.0*electron_mass_c2); |
---|
| 1187 | cosThetaPrimary = (cpps+cps-qtrev)/(2.0*cp*std::sqrt(cpps)); |
---|
| 1188 | if (cosThetaPrimary>1.0) cosThetaPrimary=1.0; |
---|
| 1189 | //Energy and emission angle of the delta ray |
---|
| 1190 | kks = (G4int) (*(shellFlag->find(Z)->second))[iOsc]; |
---|
| 1191 | if (kks>4) |
---|
| 1192 | energySecondary=dde; |
---|
| 1193 | |
---|
| 1194 | else |
---|
| 1195 | energySecondary=dde-(*(ionizationEnergy->find(Z)->second))[iOsc]; |
---|
| 1196 | cosThetaSecondary = 0.5*(dde*(kinEnergy+rb-dde)+qtrev)/std::sqrt(cps*qtrev); |
---|
| 1197 | if (cosThetaSecondary>1.0) cosThetaSecondary=1.0; |
---|
| 1198 | } |
---|
| 1199 | else if (sampledInteraction == 2) //Hard distant transverse collisions |
---|
| 1200 | { |
---|
| 1201 | dde=(*(resonanceEnergy->find(Z)->second))[iOsc]; |
---|
| 1202 | kineticEnergy1=kinEnergy-dde; |
---|
| 1203 | cosThetaPrimary=1.0; |
---|
| 1204 | //Energy and emission angle of the delta ray |
---|
| 1205 | kks = (G4int) (*(shellFlag->find(Z)->second))[iOsc]; |
---|
| 1206 | if (kks>4) |
---|
| 1207 | { |
---|
| 1208 | energySecondary=dde; |
---|
| 1209 | } |
---|
| 1210 | else |
---|
| 1211 | { |
---|
| 1212 | energySecondary=dde-(*(ionizationEnergy->find(Z)->second))[iOsc]; |
---|
| 1213 | } |
---|
| 1214 | cosThetaSecondary = 1.0; |
---|
| 1215 | } |
---|
| 1216 | else if (sampledInteraction == 3 || sampledInteraction == 4) //Close interaction |
---|
| 1217 | { |
---|
| 1218 | if (sampledInteraction == 4) //interaction with inner shells |
---|
| 1219 | { |
---|
| 1220 | UII=0.0; |
---|
| 1221 | rkc = cutoffEnergy/kinEnergy; |
---|
| 1222 | iOsc = -1; |
---|
| 1223 | } |
---|
| 1224 | else |
---|
| 1225 | { |
---|
| 1226 | kks = (G4int) (*(shellFlag->find(Z)->second))[iOsc]; |
---|
| 1227 | if (kks > 4) { |
---|
| 1228 | UII=0.0; |
---|
| 1229 | } |
---|
| 1230 | else |
---|
| 1231 | { |
---|
| 1232 | UII = (*(ionizationEnergy->find(Z)->second))[iOsc]; |
---|
| 1233 | } |
---|
| 1234 | rkc = (*(resonanceEnergy->find(Z)->second))[iOsc]/kinEnergy; |
---|
| 1235 | } |
---|
| 1236 | G4double phi,rk; |
---|
| 1237 | do{ |
---|
| 1238 | rk=rkc/(1.0-G4UniformRand()*(1.0-rkc)); |
---|
| 1239 | phi = 1.0-rk*(bha1-rk*(bha2-rk*(bha3-bha4*rk))); |
---|
| 1240 | }while ( G4UniformRand() > phi); |
---|
| 1241 | //Energy and scattering angle (primary electron); |
---|
| 1242 | kineticEnergy1 = kinEnergy*(1.0-rk); |
---|
| 1243 | cosThetaPrimary = std::sqrt(kineticEnergy1*rb/(kinEnergy*(rb-(rk*kinEnergy)))); |
---|
| 1244 | //Energy and scattering angle of the delta ray |
---|
| 1245 | energySecondary = kinEnergy-kineticEnergy1-UII; |
---|
| 1246 | cosThetaSecondary = std::sqrt(rk*kinEnergy*rb/(kinEnergy*(rk*kinEnergy+2.0*electron_mass_c2))); |
---|
| 1247 | } |
---|
| 1248 | else |
---|
| 1249 | { |
---|
| 1250 | G4String excep = "G4PenelopeIonisationModel - Error in the calculation of the final state"; |
---|
| 1251 | G4Exception(excep); |
---|
| 1252 | } |
---|
| 1253 | |
---|
| 1254 | delete qm; |
---|
| 1255 | delete cumulHardCS; |
---|
| 1256 | delete typeOfInteraction; |
---|
| 1257 | delete nbOfLevel; |
---|
| 1258 | |
---|
| 1259 | return; |
---|
| 1260 | } |
---|
| 1261 | |
---|
| 1262 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
| 1263 | |
---|
[1055] | 1264 | G4double |
---|
| 1265 | G4PenelopeIonisationModel::CalculateCrossSectionsRatio(G4double kinEnergy, |
---|
| 1266 | G4double cutoffEnergy, |
---|
| 1267 | G4int Z, G4double electronVolumeDensity, |
---|
| 1268 | const G4ParticleDefinition* theParticle) |
---|
[968] | 1269 | { |
---|
| 1270 | //Constants |
---|
| 1271 | G4double gamma = 1.0+kinEnergy/electron_mass_c2; |
---|
| 1272 | G4double gamma2 = gamma*gamma; |
---|
| 1273 | G4double beta2 = (gamma2-1.0)/gamma2; |
---|
| 1274 | G4double constant = pi*classic_electr_radius*classic_electr_radius*2.0*electron_mass_c2/beta2; |
---|
| 1275 | G4double delta = CalculateDeltaFermi(kinEnergy,Z,electronVolumeDensity); |
---|
| 1276 | G4int nbOsc = (G4int) resonanceEnergy->find(Z)->second->size(); |
---|
| 1277 | G4double softCS = 0.0; |
---|
| 1278 | G4double hardCS = 0.0; |
---|
| 1279 | for (G4int i=0;i<nbOsc;i++){ |
---|
| 1280 | G4double resEnergy = (*(resonanceEnergy->find(Z)->second))[i]; |
---|
| 1281 | std::pair<G4double,G4double> SoftAndHardXS(0.,0.); |
---|
| 1282 | if (theParticle == G4Electron::Electron()) |
---|
| 1283 | SoftAndHardXS = CrossSectionsRatioForElectrons(kinEnergy,resEnergy,delta,cutoffEnergy); |
---|
| 1284 | else if (theParticle == G4Positron::Positron()) |
---|
| 1285 | SoftAndHardXS = CrossSectionsRatioForPositrons(kinEnergy,resEnergy,delta,cutoffEnergy); |
---|
| 1286 | G4double occupNb = (*(occupationNumber->find(Z)->second))[i]; |
---|
| 1287 | softCS += occupNb*constant*SoftAndHardXS.first; |
---|
| 1288 | hardCS += occupNb*constant*SoftAndHardXS.second; |
---|
| 1289 | } |
---|
| 1290 | G4double ratio = 0.0; |
---|
| 1291 | |
---|
| 1292 | if (softCS+hardCS) ratio = (hardCS)/(softCS+hardCS); |
---|
| 1293 | return ratio; |
---|
| 1294 | } |
---|
| 1295 | |
---|
| 1296 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
| 1297 | |
---|
[1055] | 1298 | std::pair<G4double,G4double> |
---|
| 1299 | G4PenelopeIonisationModel::CrossSectionsRatioForElectrons(G4double kineticEnergy, |
---|
| 1300 | G4double resEnergy, |
---|
| 1301 | G4double densityCorrection, |
---|
| 1302 | G4double cutoffEnergy) |
---|
[968] | 1303 | { |
---|
| 1304 | std::pair<G4double,G4double> theResult(0.,0.); |
---|
| 1305 | if (kineticEnergy < resEnergy) return theResult; |
---|
| 1306 | |
---|
| 1307 | //Calculate constants |
---|
| 1308 | G4double gamma = 1.0+kineticEnergy/electron_mass_c2; |
---|
| 1309 | G4double gamma2 = gamma*gamma; |
---|
| 1310 | G4double beta2 = (gamma2-1.0)/gamma2; |
---|
| 1311 | G4double cps = kineticEnergy*(kineticEnergy+2.0*electron_mass_c2); |
---|
| 1312 | G4double amol = (kineticEnergy/(kineticEnergy+electron_mass_c2)) * (kineticEnergy/(kineticEnergy+electron_mass_c2)) ; |
---|
| 1313 | G4double hardCont = 0.0; |
---|
| 1314 | G4double softCont = 0.0; |
---|
| 1315 | |
---|
| 1316 | //Distant interactions |
---|
| 1317 | G4double cp1s = (kineticEnergy-resEnergy)*(kineticEnergy-resEnergy+2.0*electron_mass_c2); |
---|
| 1318 | G4double cp1 = std::sqrt(cp1s); |
---|
| 1319 | G4double cp = std::sqrt(cps); |
---|
| 1320 | G4double sdLong=0.0, sdTrans = 0.0, sdDist=0.0; |
---|
| 1321 | |
---|
| 1322 | //Distant longitudinal interactions |
---|
| 1323 | G4double qm = 0.0; |
---|
| 1324 | |
---|
| 1325 | if (resEnergy > kineticEnergy*(1e-6)) |
---|
| 1326 | { |
---|
| 1327 | qm = std::sqrt((cp-cp1)*(cp-cp1)+(electron_mass_c2*electron_mass_c2))-electron_mass_c2; |
---|
| 1328 | } |
---|
| 1329 | else |
---|
| 1330 | { |
---|
| 1331 | qm = resEnergy*resEnergy/(beta2*2.0*electron_mass_c2); |
---|
| 1332 | qm = qm*(1.0-0.5*qm/electron_mass_c2); |
---|
| 1333 | } |
---|
| 1334 | |
---|
| 1335 | if (qm < resEnergy) |
---|
| 1336 | { |
---|
| 1337 | sdLong = std::log(resEnergy*(qm+2.0*electron_mass_c2)/(qm*(resEnergy+2.0*electron_mass_c2))); |
---|
| 1338 | } |
---|
| 1339 | else |
---|
| 1340 | { |
---|
| 1341 | sdLong = 0.0; |
---|
| 1342 | } |
---|
| 1343 | |
---|
| 1344 | if (sdLong > 0) { |
---|
| 1345 | sdTrans = std::max(std::log(gamma2)-beta2-densityCorrection,0.0); |
---|
| 1346 | sdDist = sdTrans + sdLong; |
---|
| 1347 | if (cutoffEnergy > resEnergy) |
---|
| 1348 | { |
---|
| 1349 | softCont = sdDist/resEnergy; |
---|
| 1350 | } |
---|
| 1351 | else |
---|
| 1352 | { |
---|
| 1353 | hardCont = sdDist/resEnergy; |
---|
| 1354 | } |
---|
| 1355 | } |
---|
| 1356 | |
---|
| 1357 | // Close collisions (Moeller's cross section) |
---|
| 1358 | G4double wl = std::max(cutoffEnergy,resEnergy); |
---|
| 1359 | G4double wu = 0.5*kineticEnergy; |
---|
| 1360 | |
---|
| 1361 | if (wl < (wu-1*eV)) |
---|
| 1362 | { |
---|
| 1363 | hardCont += (1.0/(kineticEnergy-wu))-(1.0/(kineticEnergy-wl)) |
---|
| 1364 | - (1.0/wu)+(1.0/wl) |
---|
| 1365 | + (1.0-amol)*std::log(((kineticEnergy-wu)*wl)/((kineticEnergy-wl)*wu))/kineticEnergy |
---|
| 1366 | + amol*(wu-wl)/(kineticEnergy*kineticEnergy); |
---|
| 1367 | wu=wl; |
---|
| 1368 | } |
---|
| 1369 | |
---|
| 1370 | wl = resEnergy; |
---|
| 1371 | if (wl > (wu-1*eV)) |
---|
| 1372 | { |
---|
| 1373 | theResult.first = softCont; |
---|
| 1374 | theResult.second = hardCont; |
---|
| 1375 | return theResult; |
---|
| 1376 | } |
---|
| 1377 | softCont += (1.0/(kineticEnergy-wu))-(1.0/(kineticEnergy-wl)) |
---|
| 1378 | - (1.0/wu)+(1.0/wl) |
---|
| 1379 | + (1.0-amol)*std::log(((kineticEnergy-wu)*wl)/((kineticEnergy-wl)*wu))/kineticEnergy |
---|
| 1380 | + amol*(wu-wl)/(kineticEnergy*kineticEnergy); |
---|
| 1381 | theResult.first = softCont; |
---|
| 1382 | theResult.second = hardCont; |
---|
| 1383 | return theResult; |
---|
| 1384 | } |
---|
| 1385 | |
---|
| 1386 | |
---|
| 1387 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
| 1388 | |
---|
[1055] | 1389 | std::pair<G4double,G4double> |
---|
| 1390 | G4PenelopeIonisationModel::CrossSectionsRatioForPositrons(G4double kineticEnergy, |
---|
| 1391 | G4double resEnergy, |
---|
| 1392 | G4double densityCorrection, |
---|
| 1393 | G4double cutoffEnergy) |
---|
[968] | 1394 | { |
---|
| 1395 | |
---|
| 1396 | std::pair<G4double,G4double> theResult(0.,0.); |
---|
| 1397 | if (kineticEnergy < resEnergy) return theResult; |
---|
| 1398 | |
---|
| 1399 | //Calculate constants |
---|
| 1400 | G4double gamma = 1.0+kineticEnergy/electron_mass_c2; |
---|
| 1401 | G4double gamma2 = gamma*gamma; |
---|
| 1402 | G4double beta2 = (gamma2-1.0)/gamma2; |
---|
| 1403 | G4double cps = kineticEnergy*(kineticEnergy+2.0*electron_mass_c2); |
---|
| 1404 | G4double amol = (kineticEnergy/(kineticEnergy+electron_mass_c2)) * (kineticEnergy/(kineticEnergy+electron_mass_c2)) ; |
---|
| 1405 | G4double help = (gamma+1.0)*(gamma+1.0); |
---|
| 1406 | G4double bha1 = amol*(2.0*help-1.0)/(gamma2-1.0); |
---|
| 1407 | G4double bha2 = amol*(3.0+1.0/help); |
---|
| 1408 | G4double bha3 = amol*2.0*gamma*(gamma-1.0)/help; |
---|
| 1409 | G4double bha4 = amol*(gamma-1.0)*(gamma-1.0)/help; |
---|
| 1410 | G4double hardCont = 0.0; |
---|
| 1411 | G4double softCont = 0.0; |
---|
| 1412 | |
---|
| 1413 | //Distant interactions |
---|
| 1414 | G4double cp1s = (kineticEnergy-resEnergy)*(kineticEnergy-resEnergy+2.0*electron_mass_c2); |
---|
| 1415 | G4double cp1 = std::sqrt(cp1s); |
---|
| 1416 | G4double cp = std::sqrt(cps); |
---|
| 1417 | G4double sdLong=0.0, sdTrans = 0.0, sdDist=0.0; |
---|
| 1418 | |
---|
| 1419 | //Distant longitudinal interactions |
---|
| 1420 | G4double qm = 0.0; |
---|
| 1421 | |
---|
| 1422 | if (resEnergy > kineticEnergy*(1e-6)) |
---|
| 1423 | { |
---|
| 1424 | qm = std::sqrt((cp-cp1)*(cp-cp1)+(electron_mass_c2*electron_mass_c2))-electron_mass_c2; |
---|
| 1425 | } |
---|
| 1426 | else |
---|
| 1427 | { |
---|
| 1428 | qm = resEnergy*resEnergy/(beta2*2.0*electron_mass_c2); |
---|
| 1429 | qm = qm*(1.0-0.5*qm/electron_mass_c2); |
---|
| 1430 | } |
---|
| 1431 | |
---|
| 1432 | if (qm < resEnergy) |
---|
| 1433 | { |
---|
| 1434 | sdLong = std::log(resEnergy*(qm+2.0*electron_mass_c2)/(qm*(resEnergy+2.0*electron_mass_c2))); |
---|
| 1435 | } |
---|
| 1436 | else |
---|
| 1437 | { |
---|
| 1438 | sdLong = 0.0; |
---|
| 1439 | } |
---|
| 1440 | |
---|
| 1441 | if (sdLong > 0) { |
---|
| 1442 | sdTrans = std::max(std::log(gamma2)-beta2-densityCorrection,0.0); |
---|
| 1443 | sdDist = sdTrans + sdLong; |
---|
| 1444 | if (cutoffEnergy > resEnergy) |
---|
| 1445 | { |
---|
| 1446 | softCont = sdDist/resEnergy; |
---|
| 1447 | } |
---|
| 1448 | else |
---|
| 1449 | { |
---|
| 1450 | hardCont = sdDist/resEnergy; |
---|
| 1451 | } |
---|
| 1452 | } |
---|
| 1453 | |
---|
| 1454 | |
---|
| 1455 | // Close collisions (Bhabha's cross section) |
---|
| 1456 | G4double wl = std::max(cutoffEnergy,resEnergy); |
---|
| 1457 | G4double wu = kineticEnergy; |
---|
| 1458 | |
---|
| 1459 | if (wl < (wu-1*eV)) { |
---|
| 1460 | hardCont += (1.0/wl)-(1.0/wu)-bha1*std::log(wu/wl)/kineticEnergy |
---|
| 1461 | + bha2*(wu-wl)/(kineticEnergy*kineticEnergy) |
---|
| 1462 | -bha3*((wu*wu)-(wl*wl))/(2.0*kineticEnergy*kineticEnergy*kineticEnergy) |
---|
| 1463 | + bha4*((wu*wu*wu)-(wl*wl*wl))/(3.0*kineticEnergy*kineticEnergy*kineticEnergy*kineticEnergy); |
---|
| 1464 | wu=wl; |
---|
| 1465 | } |
---|
| 1466 | wl = resEnergy; |
---|
| 1467 | if (wl > (wu-1*eV)) |
---|
| 1468 | { |
---|
| 1469 | theResult.first = softCont; |
---|
| 1470 | theResult.second = hardCont; |
---|
| 1471 | return theResult; |
---|
| 1472 | } |
---|
| 1473 | softCont += (1.0/wl)-(1.0/wu)-bha1*std::log(wu/wl)/kineticEnergy |
---|
| 1474 | + bha2*(wu-wl)/(kineticEnergy*kineticEnergy) |
---|
| 1475 | -bha3*((wu*wu)-(wl*wl))/(2.0*kineticEnergy*kineticEnergy*kineticEnergy) |
---|
| 1476 | + bha4*((wu*wu*wu)-(wl*wl*wl))/(3.0*kineticEnergy*kineticEnergy*kineticEnergy*kineticEnergy); |
---|
| 1477 | |
---|
| 1478 | |
---|
| 1479 | theResult.first = softCont; |
---|
| 1480 | theResult.second = hardCont; |
---|
| 1481 | return theResult; |
---|
| 1482 | |
---|
| 1483 | } |
---|
| 1484 | |
---|
| 1485 | G4double G4PenelopeIonisationModel::ComputeStoppingPowerForElectrons(G4double kinEnergy, |
---|
| 1486 | G4double cutEnergy, |
---|
| 1487 | G4double deltaFermi, |
---|
| 1488 | G4double resEnergy) |
---|
| 1489 | { |
---|
| 1490 | //Calculate constants |
---|
| 1491 | G4double gamma = 1.0+kinEnergy/electron_mass_c2; |
---|
| 1492 | G4double gamma2 = gamma*gamma; |
---|
| 1493 | G4double beta2 = (gamma2-1.0)/gamma2; |
---|
| 1494 | G4double cps = kinEnergy*(kinEnergy+2.0*electron_mass_c2); |
---|
| 1495 | G4double amol = (gamma-1.0)*(gamma-1.0)/gamma2; |
---|
| 1496 | G4double sPower = 0.0; |
---|
| 1497 | if (kinEnergy < resEnergy) return sPower; |
---|
| 1498 | |
---|
| 1499 | //Distant interactions |
---|
| 1500 | G4double cp1s = (kinEnergy-resEnergy)*(kinEnergy-resEnergy+2.0*electron_mass_c2); |
---|
| 1501 | G4double cp1 = std::sqrt(cp1s); |
---|
| 1502 | G4double cp = std::sqrt(cps); |
---|
| 1503 | G4double sdLong=0.0, sdTrans = 0.0, sdDist=0.0; |
---|
| 1504 | |
---|
| 1505 | //Distant longitudinal interactions |
---|
| 1506 | G4double qm = 0.0; |
---|
| 1507 | |
---|
| 1508 | if (resEnergy > kinEnergy*(1e-6)) |
---|
| 1509 | { |
---|
| 1510 | qm = std::sqrt((cp-cp1)*(cp-cp1)+(electron_mass_c2*electron_mass_c2))-electron_mass_c2; |
---|
| 1511 | } |
---|
| 1512 | else |
---|
| 1513 | { |
---|
| 1514 | qm = resEnergy*resEnergy/(beta2*2.0*electron_mass_c2); |
---|
| 1515 | qm = qm*(1.0-0.5*qm/electron_mass_c2); |
---|
| 1516 | } |
---|
| 1517 | |
---|
| 1518 | if (qm < resEnergy) |
---|
| 1519 | sdLong = std::log(resEnergy*(qm+2.0*electron_mass_c2)/(qm*(resEnergy+2.0*electron_mass_c2))); |
---|
| 1520 | else |
---|
| 1521 | sdLong = 0.0; |
---|
| 1522 | |
---|
| 1523 | if (sdLong > 0) { |
---|
| 1524 | sdTrans = std::max(std::log(gamma2)-beta2-deltaFermi,0.0); |
---|
| 1525 | sdDist = sdTrans + sdLong; |
---|
| 1526 | if (cutEnergy > resEnergy) sPower = sdDist; |
---|
| 1527 | } |
---|
| 1528 | |
---|
| 1529 | |
---|
| 1530 | // Close collisions (Moeller's cross section) |
---|
| 1531 | G4double wl = std::max(cutEnergy,resEnergy); |
---|
| 1532 | G4double wu = 0.5*kinEnergy; |
---|
| 1533 | |
---|
| 1534 | if (wl < (wu-1*eV)) wu=wl; |
---|
| 1535 | wl = resEnergy; |
---|
| 1536 | if (wl > (wu-1*eV)) return sPower; |
---|
| 1537 | sPower += std::log(wu/wl)+(kinEnergy/(kinEnergy-wu))-(kinEnergy/(kinEnergy-wl)) |
---|
| 1538 | + (2.0 - amol)*std::log((kinEnergy-wu)/(kinEnergy-wl)) |
---|
| 1539 | + amol*((wu*wu)-(wl*wl))/(2.0*kinEnergy*kinEnergy); |
---|
| 1540 | return sPower; |
---|
| 1541 | } |
---|
| 1542 | |
---|
| 1543 | |
---|
| 1544 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
---|
| 1545 | |
---|
| 1546 | G4double G4PenelopeIonisationModel::ComputeStoppingPowerForPositrons(G4double kinEnergy, |
---|
| 1547 | G4double cutEnergy, |
---|
| 1548 | G4double deltaFermi, |
---|
| 1549 | G4double resEnergy) |
---|
| 1550 | { |
---|
| 1551 | //Calculate constants |
---|
| 1552 | G4double gamma = 1.0+kinEnergy/electron_mass_c2; |
---|
| 1553 | G4double gamma2 = gamma*gamma; |
---|
| 1554 | G4double beta2 = (gamma2-1.0)/gamma2; |
---|
| 1555 | G4double cps = kinEnergy*(kinEnergy+2.0*electron_mass_c2); |
---|
| 1556 | G4double amol = (kinEnergy/(kinEnergy+electron_mass_c2)) * (kinEnergy/(kinEnergy+electron_mass_c2)); |
---|
| 1557 | G4double help = (gamma+1.0)*(gamma+1.0); |
---|
| 1558 | G4double bha1 = amol*(2.0*help-1.0)/(gamma2-1.0); |
---|
| 1559 | G4double bha2 = amol*(3.0+1.0/help); |
---|
| 1560 | G4double bha3 = amol*2.0*gamma*(gamma-1.0)/help; |
---|
| 1561 | G4double bha4 = amol*(gamma-1.0)*(gamma-1.0)/help; |
---|
| 1562 | |
---|
| 1563 | G4double sPower = 0.0; |
---|
| 1564 | if (kinEnergy < resEnergy) return sPower; |
---|
| 1565 | |
---|
| 1566 | //Distant interactions |
---|
| 1567 | G4double cp1s = (kinEnergy-resEnergy)*(kinEnergy-resEnergy+2.0*electron_mass_c2); |
---|
| 1568 | G4double cp1 = std::sqrt(cp1s); |
---|
| 1569 | G4double cp = std::sqrt(cps); |
---|
| 1570 | G4double sdLong=0.0, sdTrans = 0.0, sdDist=0.0; |
---|
| 1571 | |
---|
| 1572 | //Distant longitudinal interactions |
---|
| 1573 | G4double qm = 0.0; |
---|
| 1574 | |
---|
| 1575 | if (resEnergy > kinEnergy*(1e-6)) |
---|
| 1576 | { |
---|
| 1577 | qm = std::sqrt((cp-cp1)*(cp-cp1)+(electron_mass_c2*electron_mass_c2))-electron_mass_c2; |
---|
| 1578 | } |
---|
| 1579 | else |
---|
| 1580 | { |
---|
| 1581 | qm = resEnergy*resEnergy/(beta2*2.0*electron_mass_c2); |
---|
| 1582 | qm = qm*(1.0-0.5*qm/electron_mass_c2); |
---|
| 1583 | } |
---|
| 1584 | |
---|
| 1585 | if (qm < resEnergy) |
---|
| 1586 | sdLong = std::log(resEnergy*(qm+2.0*electron_mass_c2)/(qm*(resEnergy+2.0*electron_mass_c2))); |
---|
| 1587 | else |
---|
| 1588 | sdLong = 0.0; |
---|
| 1589 | |
---|
| 1590 | if (sdLong > 0) { |
---|
| 1591 | sdTrans = std::max(std::log(gamma2)-beta2-deltaFermi,0.0); |
---|
| 1592 | sdDist = sdTrans + sdLong; |
---|
| 1593 | if (cutEnergy > resEnergy) sPower = sdDist; |
---|
| 1594 | } |
---|
| 1595 | |
---|
| 1596 | |
---|
| 1597 | // Close collisions (Bhabha's cross section) |
---|
| 1598 | G4double wl = std::max(cutEnergy,resEnergy); |
---|
| 1599 | G4double wu = kinEnergy; |
---|
| 1600 | |
---|
| 1601 | if (wl < (wu-1*eV)) wu=wl; |
---|
| 1602 | wl = resEnergy; |
---|
| 1603 | if (wl > (wu-1*eV)) return sPower; |
---|
| 1604 | sPower += std::log(wu/wl)-bha1*(wu-wl)/kinEnergy |
---|
| 1605 | + bha2*((wu*wu)-(wl*wl))/(2.0*kinEnergy*kinEnergy) |
---|
| 1606 | - bha3*((wu*wu*wu)-(wl*wl*wl))/(3.0*kinEnergy*kinEnergy*kinEnergy) |
---|
| 1607 | + bha4*((wu*wu*wu*wu)-(wl*wl*wl*wl))/(4.0*kinEnergy*kinEnergy*kinEnergy*kinEnergy); |
---|
| 1608 | return sPower; |
---|
| 1609 | } |
---|
| 1610 | |
---|
| 1611 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo... |
---|
| 1612 | |
---|
| 1613 | /* Notice: the methods here above are only temporary. They will become obsolete in a while */ |
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| 1614 | |
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| 1615 | #include "G4VDataSetAlgorithm.hh" |
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| 1616 | #include "G4LinLogLogInterpolation.hh" |
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| 1617 | #include "G4CompositeEMDataSet.hh" |
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| 1618 | #include "G4EMDataSet.hh" |
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| 1619 | |
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[1055] | 1620 | std::vector<G4VEMDataSet*>* |
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| 1621 | G4PenelopeIonisationModel::BuildCrossSectionTable(const G4ParticleDefinition* theParticle) |
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[968] | 1622 | { |
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| 1623 | std::vector<G4VEMDataSet*>* set = new std::vector<G4VEMDataSet*>; |
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| 1624 | |
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| 1625 | size_t nOfBins = 200; |
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| 1626 | G4PhysicsLogVector* theLogVector = new G4PhysicsLogVector(LowEnergyLimit(), |
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| 1627 | HighEnergyLimit(), |
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| 1628 | nOfBins); |
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| 1629 | G4DataVector* energies; |
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| 1630 | G4DataVector* cs; |
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| 1631 | |
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| 1632 | const G4ProductionCutsTable* theCoupleTable= |
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| 1633 | G4ProductionCutsTable::GetProductionCutsTable(); |
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| 1634 | size_t numOfCouples = theCoupleTable->GetTableSize(); |
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| 1635 | |
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| 1636 | |
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| 1637 | for (size_t m=0; m<numOfCouples; m++) |
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| 1638 | { |
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| 1639 | const G4MaterialCutsCouple* couple = theCoupleTable->GetMaterialCutsCouple(m); |
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| 1640 | const G4Material* material= couple->GetMaterial(); |
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| 1641 | const G4ElementVector* elementVector = material->GetElementVector(); |
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| 1642 | const G4double* nAtomsPerVolume = material->GetAtomicNumDensityVector(); |
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| 1643 | G4double electronVolumeDensity = |
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| 1644 | material->GetTotNbOfElectPerVolume(); //electron density |
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| 1645 | G4int nElements = material->GetNumberOfElements(); |
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| 1646 | |
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| 1647 | G4double tcut = (*(theCoupleTable->GetEnergyCutsVector(1)))[couple->GetIndex()]; |
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| 1648 | |
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| 1649 | G4VDataSetAlgorithm* algo = new G4LinLogLogInterpolation(); |
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| 1650 | |
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| 1651 | G4VEMDataSet* setForMat = new G4CompositeEMDataSet(algo,1.,1.); |
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| 1652 | |
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| 1653 | for (G4int i=0; i<nElements; i++) |
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| 1654 | { |
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| 1655 | G4int iZ = (G4int) (*elementVector)[i]->GetZ(); |
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| 1656 | energies = new G4DataVector; |
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| 1657 | cs = new G4DataVector; |
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| 1658 | G4double density = nAtomsPerVolume[i]; |
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| 1659 | for (size_t bin=0; bin<nOfBins; bin++) |
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| 1660 | { |
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| 1661 | G4double e = theLogVector->GetLowEdgeEnergy(bin); |
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| 1662 | energies->push_back(e); |
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| 1663 | G4double value = 0.0; |
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| 1664 | if(e > tcut) |
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| 1665 | { |
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| 1666 | G4double ratio = CalculateCrossSectionsRatio(e,tcut,iZ, |
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| 1667 | electronVolumeDensity, |
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| 1668 | theParticle); |
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| 1669 | value = crossSectionHandler->FindValue(iZ,e)*ratio*density; |
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| 1670 | } |
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| 1671 | cs->push_back(value); |
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| 1672 | } |
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| 1673 | G4VDataSetAlgorithm* algo1 = algo->Clone(); |
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| 1674 | G4VEMDataSet* elSet = new G4EMDataSet(i,energies,cs,algo1,1.,1.); |
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| 1675 | setForMat->AddComponent(elSet); |
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| 1676 | } |
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| 1677 | set->push_back(setForMat); |
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| 1678 | } |
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| 1679 | return set; |
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| 1680 | } |
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| 1681 | |
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| 1682 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo... |
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| 1683 | |
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| 1684 | G4int G4PenelopeIonisationModel::SampleRandomAtom(const G4MaterialCutsCouple* couple, |
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| 1685 | G4double e) const |
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| 1686 | { |
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| 1687 | // Select randomly an element within the material, according to the weight |
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| 1688 | // determined by the cross sections in the data set |
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| 1689 | |
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| 1690 | const G4Material* material = couple->GetMaterial(); |
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| 1691 | G4int nElements = material->GetNumberOfElements(); |
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| 1692 | |
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| 1693 | // Special case: the material consists of one element |
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| 1694 | if (nElements == 1) |
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| 1695 | { |
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| 1696 | G4int Z = (G4int) material->GetZ(); |
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| 1697 | return Z; |
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| 1698 | } |
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| 1699 | |
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| 1700 | // Composite material |
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| 1701 | const G4ElementVector* elementVector = material->GetElementVector(); |
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| 1702 | size_t materialIndex = couple->GetIndex(); |
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| 1703 | |
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| 1704 | G4VEMDataSet* materialSet = (*theXSTable)[materialIndex]; |
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| 1705 | G4double materialCrossSection0 = 0.0; |
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| 1706 | G4DataVector cross; |
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| 1707 | cross.clear(); |
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| 1708 | for ( G4int i=0; i < nElements; i++ ) |
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| 1709 | { |
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| 1710 | G4double cr = materialSet->GetComponent(i)->FindValue(e); |
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| 1711 | materialCrossSection0 += cr; |
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| 1712 | cross.push_back(materialCrossSection0); |
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| 1713 | } |
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| 1714 | |
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| 1715 | G4double random = G4UniformRand() * materialCrossSection0; |
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| 1716 | |
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| 1717 | for (G4int k=0 ; k < nElements ; k++ ) |
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| 1718 | { |
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| 1719 | if (random <= cross[k]) return (G4int) (*elementVector)[k]->GetZ(); |
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| 1720 | } |
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| 1721 | // It should never get here |
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| 1722 | return 0; |
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| 1723 | } |
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| 1724 | |
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| 1725 | |
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[1192] | 1726 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 1727 | |
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| 1728 | void G4PenelopeIonisationModel::ActivateAuger(G4bool augerbool) |
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| 1729 | { |
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| 1730 | if (!DeexcitationFlag() && augerbool) |
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| 1731 | { |
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| 1732 | G4cout << "WARNING - G4PenelopeIonisationModel" << G4endl; |
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| 1733 | G4cout << "The use of the Atomic Deexcitation Manager is set to false " << G4endl; |
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| 1734 | G4cout << "Therefore, Auger electrons will be not generated anyway" << G4endl; |
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| 1735 | } |
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| 1736 | deexcitationManager.ActivateAugerElectronProduction(augerbool); |
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| 1737 | if (verboseLevel > 1) |
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| 1738 | G4cout << "Auger production set to " << augerbool << G4endl; |
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| 1739 | } |
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| 1740 | |
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| 1741 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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