[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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| 26 | // $Id: G4DNABornExcitationModel.cc,v 1.3 2009/02/16 11:00:11 sincerti Exp $ |
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| 27 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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| 28 | // |
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| 29 | |
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| 30 | #include "G4DNABornExcitationModel.hh" |
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| 31 | |
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| 32 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 33 | |
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| 34 | using namespace std; |
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| 35 | |
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| 36 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 37 | |
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| 38 | G4DNABornExcitationModel::G4DNABornExcitationModel(const G4ParticleDefinition*, |
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| 39 | const G4String& nam) |
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| 40 | :G4VEmModel(nam),isInitialised(false) |
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| 41 | { |
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| 42 | |
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| 43 | lowEnergyLimit = 500 * keV; |
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| 44 | highEnergyLimit = 10 * MeV; |
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| 45 | SetLowEnergyLimit(lowEnergyLimit); |
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| 46 | SetHighEnergyLimit(highEnergyLimit); |
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| 47 | |
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| 48 | verboseLevel= 0; |
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| 49 | // Verbosity scale: |
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| 50 | // 0 = nothing |
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| 51 | // 1 = warning for energy non-conservation |
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| 52 | // 2 = details of energy budget |
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| 53 | // 3 = calculation of cross sections, file openings, sampling of atoms |
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| 54 | // 4 = entering in methods |
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| 55 | |
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| 56 | // |
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| 57 | |
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| 58 | table = 0; |
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| 59 | |
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| 60 | // |
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| 61 | |
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| 62 | G4cout << "Born excitation model is constructed " << G4endl |
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| 63 | << "Energy range: " |
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| 64 | << lowEnergyLimit / keV << " keV - " |
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| 65 | << highEnergyLimit / MeV << " MeV" |
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| 66 | << G4endl; |
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| 67 | |
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| 68 | } |
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| 69 | |
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| 70 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 71 | |
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| 72 | G4DNABornExcitationModel::~G4DNABornExcitationModel() |
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| 73 | { |
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| 74 | // Cross section |
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| 75 | delete table; |
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| 76 | } |
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| 77 | |
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| 78 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 79 | |
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| 80 | void G4DNABornExcitationModel::Initialise(const G4ParticleDefinition* /*particle*/, |
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| 81 | const G4DataVector& /*cuts*/) |
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| 82 | { |
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| 83 | |
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| 84 | if (verboseLevel > 3) |
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| 85 | G4cout << "Calling G4DNABornExcitationModel::Initialise()" << G4endl; |
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| 86 | |
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| 87 | // Energy limits |
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| 88 | |
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| 89 | if (LowEnergyLimit() < lowEnergyLimit) |
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| 90 | { |
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| 91 | G4cout << "G4DNABornExcitationModel: low energy limit increased from " << |
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| 92 | LowEnergyLimit()/keV << " keV to " << lowEnergyLimit/keV << " keV" << G4endl; |
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| 93 | SetLowEnergyLimit(lowEnergyLimit); |
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| 94 | } |
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| 95 | |
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| 96 | if (HighEnergyLimit() > highEnergyLimit) |
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| 97 | { |
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| 98 | G4cout << "G4DNABornExcitationModel: high energy limit decreased from " << |
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| 99 | HighEnergyLimit()/MeV << " MeV to " << highEnergyLimit/MeV << " MeV" << G4endl; |
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| 100 | SetHighEnergyLimit(highEnergyLimit); |
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| 101 | } |
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| 102 | |
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| 103 | // |
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| 104 | |
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| 105 | if (table == 0) |
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| 106 | { |
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| 107 | table = new G4DNACrossSectionDataSet(new G4LogLogInterpolation, eV,(1e-22/3.343)*m*m ); |
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| 108 | table->LoadData("dna/sigma_excitation_p_born"); |
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| 109 | } |
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| 110 | |
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| 111 | G4cout << "Born excitation model is initialized " << G4endl |
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| 112 | << "Energy range: " |
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| 113 | << LowEnergyLimit() / keV << " keV - " |
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| 114 | << HighEnergyLimit() / MeV << " MeV " << G4endl; |
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| 115 | |
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| 116 | if(!isInitialised) |
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| 117 | { |
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| 118 | isInitialised = true; |
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| 119 | |
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| 120 | if(pParticleChange) |
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| 121 | fParticleChangeForGamma = reinterpret_cast<G4ParticleChangeForGamma*>(pParticleChange); |
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| 122 | else |
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| 123 | fParticleChangeForGamma = new G4ParticleChangeForGamma(); |
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| 124 | } |
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| 125 | |
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| 126 | // InitialiseElementSelectors(particle,cuts); |
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| 127 | |
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| 128 | // Test if water material |
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| 129 | |
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| 130 | flagMaterialIsWater= false; |
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| 131 | densityWater = 0; |
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| 132 | |
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| 133 | const G4ProductionCutsTable* theCoupleTable = G4ProductionCutsTable::GetProductionCutsTable(); |
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| 134 | |
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| 135 | if(theCoupleTable) |
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| 136 | { |
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| 137 | G4int numOfCouples = theCoupleTable->GetTableSize(); |
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| 138 | |
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| 139 | if(numOfCouples>0) |
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| 140 | { |
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| 141 | for (G4int i=0; i<numOfCouples; i++) |
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| 142 | { |
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| 143 | const G4MaterialCutsCouple* couple = theCoupleTable->GetMaterialCutsCouple(i); |
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| 144 | const G4Material* material = couple->GetMaterial(); |
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| 145 | |
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| 146 | size_t j = material->GetNumberOfElements(); |
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| 147 | while (j>0) |
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| 148 | { |
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| 149 | j--; |
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| 150 | const G4Element* element(material->GetElement(j)); |
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| 151 | if (element->GetZ() == 8.) |
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| 152 | { |
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| 153 | G4double density = material->GetAtomicNumDensityVector()[j]; |
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| 154 | if (density > 0.) |
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| 155 | { |
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| 156 | flagMaterialIsWater = true; |
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| 157 | densityWater = density; |
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| 158 | |
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| 159 | if (verboseLevel > 3) |
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| 160 | G4cout << "Water material is found with density(cm^-3)=" << density/(cm*cm*cm) << G4endl; |
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| 161 | } |
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| 162 | } |
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| 163 | } |
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| 164 | |
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| 165 | } |
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| 166 | } // if(numOfCouples>0) |
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| 167 | |
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| 168 | } // if (theCoupleTable) |
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| 169 | |
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| 170 | } |
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| 171 | |
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| 172 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 173 | |
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| 174 | G4double G4DNABornExcitationModel::CrossSectionPerVolume(const G4Material*, |
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| 175 | const G4ParticleDefinition* particleDefinition, |
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| 176 | G4double k, |
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| 177 | G4double, |
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| 178 | G4double) |
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| 179 | { |
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| 180 | if (verboseLevel > 3) |
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| 181 | G4cout << "Calling CrossSectionPerVolume() of G4DNABornExcitationModel" << G4endl; |
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| 182 | |
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| 183 | // Calculate total cross section for model |
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| 184 | |
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| 185 | G4double crossSection=0; |
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| 186 | |
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| 187 | if (flagMaterialIsWater) |
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| 188 | { |
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| 189 | if (particleDefinition == G4Proton::ProtonDefinition()) |
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| 190 | { |
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| 191 | if (k >= lowEnergyLimit && k < highEnergyLimit) |
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| 192 | { |
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| 193 | crossSection = table->FindValue(k); |
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| 194 | } |
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| 195 | |
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| 196 | if (verboseLevel > 3) |
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| 197 | { |
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| 198 | G4cout << "---> Kinetic energy(keV)=" << k/keV << G4endl; |
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| 199 | G4cout << " - Cross section per water molecule (cm^2)=" << crossSection/cm/cm << G4endl; |
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| 200 | G4cout << " - Cross section per water molecule (cm^-1)=" << crossSection*densityWater/(1./cm) << G4endl; |
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| 201 | } |
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| 202 | } |
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| 203 | } // if (flagMaterialIsWater) |
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| 204 | |
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| 205 | return crossSection*densityWater; |
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| 206 | |
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| 207 | } |
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| 208 | |
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| 209 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 210 | |
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| 211 | void G4DNABornExcitationModel::SampleSecondaries(std::vector<G4DynamicParticle*>* /*fvect*/, |
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| 212 | const G4MaterialCutsCouple* /*couple*/, |
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| 213 | const G4DynamicParticle* aDynamicParticle, |
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| 214 | G4double, |
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| 215 | G4double) |
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| 216 | { |
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| 217 | |
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| 218 | if (verboseLevel > 3) |
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| 219 | G4cout << "Calling SampleSecondaries() of G4DNABornExcitationModel" << G4endl; |
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| 220 | |
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| 221 | G4double k = aDynamicParticle->GetKineticEnergy(); |
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| 222 | |
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| 223 | G4int level = RandomSelect(k); |
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| 224 | G4double excitationEnergy = waterStructure.ExcitationEnergy(level); |
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| 225 | G4double newEnergy = k - excitationEnergy; |
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| 226 | |
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| 227 | if (newEnergy > 0) |
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| 228 | { |
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| 229 | fParticleChangeForGamma->ProposeMomentumDirection(aDynamicParticle->GetMomentumDirection()); |
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| 230 | fParticleChangeForGamma->SetProposedKineticEnergy(newEnergy); |
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| 231 | fParticleChangeForGamma->ProposeLocalEnergyDeposit(excitationEnergy); |
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| 232 | } |
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| 233 | |
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| 234 | } |
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| 235 | |
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| 236 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 237 | |
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| 238 | G4int G4DNABornExcitationModel::RandomSelect(G4double k) |
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| 239 | { |
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| 240 | G4int level = 0; |
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| 241 | |
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| 242 | G4double* valuesBuffer = new G4double[table->NumberOfComponents()]; |
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| 243 | |
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| 244 | const size_t n(table->NumberOfComponents()); |
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| 245 | size_t i(n); |
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| 246 | G4double value = 0.; |
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| 247 | |
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| 248 | while (i>0) |
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| 249 | { |
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| 250 | i--; |
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| 251 | valuesBuffer[i] = table->GetComponent(i)->FindValue(k); |
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| 252 | value += valuesBuffer[i]; |
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| 253 | } |
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| 254 | |
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| 255 | value *= G4UniformRand(); |
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| 256 | |
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| 257 | i = n; |
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| 258 | |
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| 259 | while (i > 0) |
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| 260 | { |
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| 261 | i--; |
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| 262 | |
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| 263 | if (valuesBuffer[i] > value) |
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| 264 | { |
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| 265 | delete[] valuesBuffer; |
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| 266 | return i; |
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| 267 | } |
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| 268 | value -= valuesBuffer[i]; |
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| 269 | } |
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| 270 | |
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| 271 | if (valuesBuffer) delete[] valuesBuffer; |
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| 272 | |
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| 273 | return level; |
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| 274 | } |
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| 275 | |
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| 276 | |
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