[1058] | 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: G4DNADingfelderChargeIncreaseModel.cc,v 1.6 2009/08/13 11:32:47 sincerti Exp $ |
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[1228] | 27 | // GEANT4 tag $Name: geant4-09-03 $ |
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[1058] | 28 | // |
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| 29 | |
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| 30 | #include "G4DNADingfelderChargeIncreaseModel.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 | G4DNADingfelderChargeIncreaseModel::G4DNADingfelderChargeIncreaseModel(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 | verboseLevel= 0; |
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| 44 | // Verbosity scale: |
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| 45 | // 0 = nothing |
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| 46 | // 1 = warning for energy non-conservation |
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| 47 | // 2 = details of energy budget |
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| 48 | // 3 = calculation of cross sections, file openings, sampling of atoms |
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| 49 | // 4 = entering in methods |
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| 50 | |
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[1192] | 51 | if( verboseLevel>0 ) |
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| 52 | { |
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| 53 | G4cout << "Dingfelder charge increase model is constructed " << G4endl; |
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| 54 | } |
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[1058] | 55 | |
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| 56 | } |
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| 57 | |
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| 58 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 59 | |
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| 60 | G4DNADingfelderChargeIncreaseModel::~G4DNADingfelderChargeIncreaseModel() |
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| 61 | {} |
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| 62 | |
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| 63 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 64 | |
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| 65 | void G4DNADingfelderChargeIncreaseModel::Initialise(const G4ParticleDefinition* particle, |
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| 66 | const G4DataVector& /*cuts*/) |
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| 67 | { |
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| 68 | |
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| 69 | if (verboseLevel > 3) |
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| 70 | G4cout << "Calling G4DNADingfelderChargeIncreaseModel::Initialise()" << G4endl; |
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| 71 | |
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| 72 | // Energy limits |
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| 73 | |
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| 74 | G4DNAGenericIonsManager *instance; |
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| 75 | instance = G4DNAGenericIonsManager::Instance(); |
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| 76 | G4ParticleDefinition* hydrogenDef = instance->GetIon("hydrogen"); |
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| 77 | G4ParticleDefinition* alphaPlusDef = instance->GetIon("alpha+"); |
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| 78 | G4ParticleDefinition* heliumDef = instance->GetIon("helium"); |
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| 79 | |
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| 80 | G4String hydrogen; |
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| 81 | G4String alphaPlus; |
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| 82 | G4String helium; |
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| 83 | |
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| 84 | if (hydrogenDef != 0) |
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| 85 | { |
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| 86 | hydrogen = hydrogenDef->GetParticleName(); |
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| 87 | lowEnergyLimit[hydrogen] = 1. * keV; |
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| 88 | highEnergyLimit[hydrogen] = 10. * MeV; |
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| 89 | } |
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| 90 | else |
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| 91 | { |
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| 92 | G4Exception("G4DNADingfelderChargeIncreaseModel::Initialise: hydrogen is not defined"); |
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| 93 | } |
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| 94 | |
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| 95 | if (alphaPlusDef != 0) |
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| 96 | { |
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| 97 | alphaPlus = alphaPlusDef->GetParticleName(); |
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| 98 | lowEnergyLimit[alphaPlus] = 1. * keV; |
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| 99 | highEnergyLimit[alphaPlus] = 10. * MeV; |
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| 100 | } |
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| 101 | else |
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| 102 | { |
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| 103 | G4Exception("G4DNADingfelderChargeIncreaseModel::Initialise: alphaPlus is not defined"); |
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| 104 | } |
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| 105 | |
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| 106 | if (heliumDef != 0) |
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| 107 | { |
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| 108 | helium = heliumDef->GetParticleName(); |
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| 109 | lowEnergyLimit[helium] = 1. * keV; |
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| 110 | highEnergyLimit[helium] = 10. * MeV; |
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| 111 | } |
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| 112 | else |
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| 113 | { |
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| 114 | G4Exception("G4DNADingfelderChargeIncreaseModel::Initialise: helium is not defined"); |
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| 115 | } |
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| 116 | |
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| 117 | if (particle==hydrogenDef) |
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| 118 | { |
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| 119 | SetLowEnergyLimit(lowEnergyLimit[hydrogen]); |
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| 120 | SetHighEnergyLimit(highEnergyLimit[hydrogen]); |
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| 121 | } |
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| 122 | |
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| 123 | if (particle==alphaPlusDef) |
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| 124 | { |
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| 125 | SetLowEnergyLimit(lowEnergyLimit[alphaPlus]); |
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| 126 | SetHighEnergyLimit(highEnergyLimit[alphaPlus]); |
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| 127 | } |
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| 128 | |
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| 129 | if (particle==heliumDef) |
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| 130 | { |
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| 131 | SetLowEnergyLimit(lowEnergyLimit[helium]); |
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| 132 | SetHighEnergyLimit(highEnergyLimit[helium]); |
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| 133 | } |
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| 134 | |
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| 135 | // Final state |
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| 136 | |
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| 137 | //ALPHA+ |
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| 138 | |
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| 139 | f0[0][0]=1.; |
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| 140 | a0[0][0]=2.25; |
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| 141 | a1[0][0]=-0.75; |
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| 142 | b0[0][0]=-32.10; |
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| 143 | c0[0][0]=0.600; |
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| 144 | d0[0][0]=2.40; |
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| 145 | x0[0][0]=4.60; |
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| 146 | |
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| 147 | x1[0][0]=-1.; |
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| 148 | b1[0][0]=-1.; |
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| 149 | |
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| 150 | numberOfPartialCrossSections[0]=1; |
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| 151 | |
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| 152 | //HELIUM |
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| 153 | |
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| 154 | f0[0][1]=1.; |
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| 155 | a0[0][1]=2.25; |
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| 156 | a1[0][1]=-0.75; |
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| 157 | b0[0][1]=-30.93; |
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| 158 | c0[0][1]=0.590; |
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| 159 | d0[0][1]=2.35; |
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| 160 | x0[0][1]=4.29; |
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| 161 | |
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| 162 | f0[1][1]=1.; |
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| 163 | a0[1][1]=2.25; |
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| 164 | a1[1][1]=-0.75; |
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| 165 | b0[1][1]=-32.61; |
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| 166 | c0[1][1]=0.435; |
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| 167 | d0[1][1]=2.70; |
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| 168 | x0[1][1]=4.45; |
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| 169 | |
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| 170 | x1[0][1]=-1.; |
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| 171 | b1[0][1]=-1.; |
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| 172 | |
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| 173 | x1[1][1]=-1.; |
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| 174 | b1[1][1]=-1.; |
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| 175 | |
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| 176 | numberOfPartialCrossSections[1]=2; |
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| 177 | |
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| 178 | // |
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| 179 | |
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[1192] | 180 | if( verboseLevel>0 ) |
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| 181 | { |
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| 182 | G4cout << "Dingfelder charge increase model is initialized " << G4endl |
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| 183 | << "Energy range: " |
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| 184 | << LowEnergyLimit() / keV << " keV - " |
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| 185 | << HighEnergyLimit() / MeV << " MeV for " |
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| 186 | << particle->GetParticleName() |
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| 187 | << G4endl; |
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| 188 | } |
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[1058] | 189 | |
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| 190 | if(!isInitialised) |
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| 191 | { |
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| 192 | isInitialised = true; |
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| 193 | |
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| 194 | if(pParticleChange) |
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| 195 | fParticleChangeForGamma = reinterpret_cast<G4ParticleChangeForGamma*>(pParticleChange); |
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| 196 | else |
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| 197 | fParticleChangeForGamma = new G4ParticleChangeForGamma(); |
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| 198 | } |
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| 199 | |
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| 200 | // InitialiseElementSelectors(particle,cuts); |
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| 201 | |
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| 202 | // Test if water material |
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| 203 | |
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| 204 | flagMaterialIsWater= false; |
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| 205 | densityWater = 0; |
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| 206 | |
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| 207 | const G4ProductionCutsTable* theCoupleTable = G4ProductionCutsTable::GetProductionCutsTable(); |
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| 208 | |
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| 209 | if(theCoupleTable) |
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| 210 | { |
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| 211 | G4int numOfCouples = theCoupleTable->GetTableSize(); |
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| 212 | |
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| 213 | if(numOfCouples>0) |
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| 214 | { |
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| 215 | for (G4int i=0; i<numOfCouples; i++) |
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| 216 | { |
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| 217 | const G4MaterialCutsCouple* couple = theCoupleTable->GetMaterialCutsCouple(i); |
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| 218 | const G4Material* material = couple->GetMaterial(); |
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| 219 | |
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[1192] | 220 | if (material->GetName() == "G4_WATER") |
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[1058] | 221 | { |
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[1192] | 222 | G4double density = material->GetAtomicNumDensityVector()[1]; |
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| 223 | flagMaterialIsWater = true; |
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| 224 | densityWater = density; |
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| 225 | |
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| 226 | if (verboseLevel > 3) |
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| 227 | G4cout << "****** Water material is found with density(cm^-3)=" << density/(cm*cm*cm) << G4endl; |
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[1058] | 228 | } |
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| 229 | |
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| 230 | } |
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| 231 | |
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[1192] | 232 | } // if(numOfCouples>0) |
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| 233 | |
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[1058] | 234 | } // if (theCoupleTable) |
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| 235 | |
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| 236 | } |
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| 237 | |
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| 238 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 239 | |
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| 240 | G4double G4DNADingfelderChargeIncreaseModel::CrossSectionPerVolume(const G4Material*, |
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| 241 | const G4ParticleDefinition* particleDefinition, |
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| 242 | G4double k, |
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| 243 | G4double, |
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| 244 | G4double) |
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| 245 | { |
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| 246 | if (verboseLevel > 3) |
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| 247 | G4cout << "Calling CrossSectionPerVolume() of G4DNADingfelderChargeIncreaseModel" << G4endl; |
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| 248 | |
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| 249 | // Calculate total cross section for model |
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| 250 | |
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| 251 | G4DNAGenericIonsManager *instance; |
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| 252 | instance = G4DNAGenericIonsManager::Instance(); |
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| 253 | |
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| 254 | if ( |
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| 255 | particleDefinition != instance->GetIon("hydrogen") |
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| 256 | && |
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| 257 | particleDefinition != instance->GetIon("alpha+") |
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| 258 | && |
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| 259 | particleDefinition != instance->GetIon("helium") |
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| 260 | ) |
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| 261 | |
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| 262 | return 0; |
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| 263 | |
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| 264 | G4double lowLim = 0; |
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| 265 | G4double highLim = 0; |
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| 266 | G4double totalCrossSection = 0.; |
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| 267 | |
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| 268 | if (flagMaterialIsWater) |
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| 269 | { |
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| 270 | const G4String& particleName = particleDefinition->GetParticleName(); |
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| 271 | |
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| 272 | std::map< G4String,G4double,std::less<G4String> >::iterator pos1; |
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| 273 | pos1 = lowEnergyLimit.find(particleName); |
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| 274 | |
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| 275 | if (pos1 != lowEnergyLimit.end()) |
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| 276 | { |
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| 277 | lowLim = pos1->second; |
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| 278 | } |
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| 279 | |
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| 280 | std::map< G4String,G4double,std::less<G4String> >::iterator pos2; |
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| 281 | pos2 = highEnergyLimit.find(particleName); |
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| 282 | |
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| 283 | if (pos2 != highEnergyLimit.end()) |
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| 284 | { |
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| 285 | highLim = pos2->second; |
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| 286 | } |
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| 287 | |
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| 288 | if (k >= lowLim && k < highLim) |
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| 289 | { |
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| 290 | //HYDROGEN |
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| 291 | if (particleDefinition == instance->GetIon("hydrogen")) |
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| 292 | { |
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| 293 | const G4double aa = 2.835; |
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| 294 | const G4double bb = 0.310; |
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| 295 | const G4double cc = 2.100; |
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| 296 | const G4double dd = 0.760; |
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| 297 | const G4double fac = 1.0e-18; |
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| 298 | const G4double rr = 13.606 * eV; |
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| 299 | |
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| 300 | G4double t = k / (proton_mass_c2/electron_mass_c2); |
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| 301 | G4double x = t / rr; |
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| 302 | G4double temp = 4.0 * pi * Bohr_radius/nm * Bohr_radius/nm * fac; |
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| 303 | G4double sigmal = temp * cc * (std::pow(x,dd)); |
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| 304 | G4double sigmah = temp * (aa * std::log(1.0 + x) + bb) / x; |
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| 305 | totalCrossSection = 1.0/(1.0/sigmal + 1.0/sigmah) *m*m; |
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| 306 | } |
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| 307 | else |
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| 308 | { |
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| 309 | totalCrossSection = Sum(k,particleDefinition); |
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| 310 | } |
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| 311 | } |
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| 312 | |
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| 313 | if (verboseLevel > 3) |
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| 314 | { |
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| 315 | G4cout << "---> Kinetic energy(eV)=" << k/eV << G4endl; |
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| 316 | G4cout << " - Cross section per water molecule (cm^2)=" << totalCrossSection/cm/cm << G4endl; |
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| 317 | G4cout << " - Cross section per water molecule (cm^-1)=" << totalCrossSection*densityWater/(1./cm) << G4endl; |
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| 318 | } |
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| 319 | |
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| 320 | } // if (flagMaterialIsWater) |
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| 321 | |
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| 322 | return totalCrossSection*densityWater; |
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| 323 | |
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| 324 | } |
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| 325 | |
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| 326 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 327 | |
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| 328 | void G4DNADingfelderChargeIncreaseModel::SampleSecondaries(std::vector<G4DynamicParticle*>* fvect, |
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| 329 | const G4MaterialCutsCouple* /*couple*/, |
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| 330 | const G4DynamicParticle* aDynamicParticle, |
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| 331 | G4double, |
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| 332 | G4double) |
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| 333 | { |
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| 334 | if (verboseLevel > 3) |
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| 335 | G4cout << "Calling SampleSecondaries() of G4DNADingfelderChargeIncreaseModel" << G4endl; |
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| 336 | |
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| 337 | fParticleChangeForGamma->ProposeTrackStatus(fStopAndKill); |
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| 338 | fParticleChangeForGamma->ProposeLocalEnergyDeposit(0.); |
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| 339 | |
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| 340 | G4ParticleDefinition* definition = aDynamicParticle->GetDefinition(); |
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| 341 | |
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| 342 | G4double inK = aDynamicParticle->GetKineticEnergy(); |
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| 343 | |
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| 344 | G4int finalStateIndex = RandomSelect(inK,definition); |
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| 345 | |
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| 346 | G4int n = NumberOfFinalStates(definition,finalStateIndex); |
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| 347 | |
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| 348 | G4double outK = inK - IncomingParticleBindingEnergyConstant(definition,finalStateIndex); |
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| 349 | |
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| 350 | G4DNAGenericIonsManager* instance; |
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| 351 | instance = G4DNAGenericIonsManager::Instance(); |
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| 352 | |
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| 353 | G4double electronK; |
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| 354 | if (definition == instance->GetIon("hydrogen")) electronK = inK*electron_mass_c2/proton_mass_c2; |
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| 355 | else electronK = inK*electron_mass_c2/(3728*MeV); |
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| 356 | |
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| 357 | if (outK<0) |
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| 358 | { |
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| 359 | G4String message; |
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| 360 | message="G4DNADingfelderChargeIncreaseModel::SampleSecondaries: final kinetic energy is below 0! Process "; |
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| 361 | } |
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| 362 | |
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| 363 | G4DynamicParticle* dp = new G4DynamicParticle |
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| 364 | |
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| 365 | (OutgoingParticleDefinition(definition,finalStateIndex), |
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| 366 | aDynamicParticle->GetMomentumDirection(), |
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| 367 | outK) ; |
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| 368 | |
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| 369 | fvect->push_back(dp); |
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| 370 | |
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| 371 | n = n - 1; |
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| 372 | |
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| 373 | while (n>0) |
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| 374 | { |
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| 375 | n--; |
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| 376 | fvect->push_back(new G4DynamicParticle |
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| 377 | (G4Electron::Electron(), aDynamicParticle->GetMomentumDirection(), electronK) ); |
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| 378 | } |
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| 379 | |
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| 380 | } |
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| 381 | |
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| 382 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 383 | |
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| 384 | G4int G4DNADingfelderChargeIncreaseModel::NumberOfFinalStates(G4ParticleDefinition* particleDefinition, |
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| 385 | G4int finalStateIndex ) |
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| 386 | |
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| 387 | { |
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| 388 | G4DNAGenericIonsManager* instance; |
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| 389 | instance = G4DNAGenericIonsManager::Instance(); |
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| 390 | if (particleDefinition == instance->GetIon("hydrogen")) return 2; |
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| 391 | if (particleDefinition == instance->GetIon("alpha+")) return 2; |
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| 392 | |
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| 393 | if (particleDefinition == instance->GetIon("helium")) |
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| 394 | { if (finalStateIndex==0) return 2; |
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| 395 | return 3; |
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| 396 | } |
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| 397 | return 0; |
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| 398 | } |
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| 399 | |
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| 400 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 401 | |
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| 402 | G4ParticleDefinition* G4DNADingfelderChargeIncreaseModel::OutgoingParticleDefinition (G4ParticleDefinition* particleDefinition, |
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| 403 | G4int finalStateIndex) |
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| 404 | { |
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| 405 | G4DNAGenericIonsManager * instance(G4DNAGenericIonsManager::Instance()); |
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| 406 | if (particleDefinition == instance->GetIon("hydrogen")) return G4Proton::Proton(); |
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| 407 | if (particleDefinition == instance->GetIon("alpha+")) return instance->GetIon("alpha++"); |
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| 408 | |
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[1192] | 409 | if (particleDefinition == instance->GetIon("helium")) |
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[1058] | 410 | { |
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| 411 | if (finalStateIndex==0) return instance->GetIon("alpha+"); |
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| 412 | return instance->GetIon("alpha++"); |
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| 413 | } |
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| 414 | return 0; |
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| 415 | } |
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| 416 | |
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| 417 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 418 | |
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| 419 | G4double G4DNADingfelderChargeIncreaseModel::IncomingParticleBindingEnergyConstant(G4ParticleDefinition* particleDefinition, |
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| 420 | G4int finalStateIndex ) |
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| 421 | { |
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| 422 | G4DNAGenericIonsManager * instance(G4DNAGenericIonsManager::Instance()); |
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| 423 | if(particleDefinition == instance->GetIon("hydrogen")) return 13.6*eV; |
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| 424 | |
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| 425 | if(particleDefinition == instance->GetIon("alpha+")) |
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| 426 | { |
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| 427 | // Binding energy for He+ -> He++ + e- 54.509 eV |
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| 428 | // Binding energy for He -> He+ + e- 24.587 eV |
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| 429 | return 54.509*eV; |
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| 430 | } |
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| 431 | |
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| 432 | if(particleDefinition == instance->GetIon("helium")) |
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| 433 | { |
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| 434 | // Binding energy for He+ -> He++ + e- 54.509 eV |
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| 435 | // Binding energy for He -> He+ + e- 24.587 eV |
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| 436 | |
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| 437 | if (finalStateIndex==0) return 24.587*eV; |
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| 438 | return (54.509 + 24.587)*eV; |
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| 439 | } |
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| 440 | |
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| 441 | return 0; |
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| 442 | } |
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| 443 | |
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| 444 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 445 | |
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| 446 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 447 | |
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| 448 | G4double G4DNADingfelderChargeIncreaseModel::PartialCrossSection(G4double k, G4int index, |
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| 449 | const G4ParticleDefinition* particleDefinition) |
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| 450 | { |
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| 451 | |
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| 452 | G4int particleTypeIndex = 0; |
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| 453 | G4DNAGenericIonsManager *instance; |
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| 454 | instance = G4DNAGenericIonsManager::Instance(); |
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| 455 | |
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| 456 | if (particleDefinition == instance->GetIon("alpha+")) particleTypeIndex=0; |
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| 457 | if (particleDefinition == instance->GetIon("helium")) particleTypeIndex=1; |
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| 458 | |
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| 459 | // |
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| 460 | // sigma(T) = f0 10 ^ y(log10(T/eV)) |
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| 461 | // |
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| 462 | // / a0 x + b0 x < x0 |
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| 463 | // | |
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| 464 | // y(x) = < a0 x + b0 - c0 (x - x0)^d0 x0 <= x < x1 |
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| 465 | // | |
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| 466 | // \ a1 x + b1 x >= x1 |
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| 467 | // |
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| 468 | // |
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| 469 | // f0, a0, a1, b0, b1, c0, d0, x0, x1 are parameters that change for protons and helium (0, +, ++) |
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| 470 | // |
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| 471 | // f0 has been added to the code in order to manage partial (shell-dependent) cross sections (if no shell dependence is present. f0=1. Sum of f0 over the considered shells should give 1) |
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| 472 | // |
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| 473 | // From Rad. Phys. and Chem. 59 (2000) 255-275, M. Dingfelder et al. |
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| 474 | // Inelastic-collision cross sections of liquid water for interactions of energetic proton |
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| 475 | // |
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| 476 | |
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| 477 | if (x1[index][particleTypeIndex]<x0[index][particleTypeIndex]) |
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| 478 | { |
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| 479 | // |
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| 480 | // if x1 < x0 means that x1 and b1 will be calculated with the following formula (this piece of code is run on all alphas and not on protons) |
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| 481 | // |
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| 482 | // x1 = x0 + ((a0 - a1)/(c0 * d0)) ^ (1 / (d0 - 1)) |
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| 483 | // |
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| 484 | // b1 = (a0 - a1) * x1 + b0 - c0 * (x1 - x0) ^ d0 |
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| 485 | // |
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| 486 | |
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| 487 | x1[index][particleTypeIndex]=x0[index][particleTypeIndex] + std::pow((a0[index][particleTypeIndex] - a1[index][particleTypeIndex]) / (c0[index][particleTypeIndex] * d0[index][particleTypeIndex]), 1. / (d0[index][particleTypeIndex] - 1.)); |
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| 488 | b1[index][particleTypeIndex]=(a0[index][particleTypeIndex] - a1[index][particleTypeIndex]) * x1[index][particleTypeIndex] + b0[index][particleTypeIndex] - c0[index][particleTypeIndex] * std::pow(x1[index][particleTypeIndex] - x0[index][particleTypeIndex], d0[index][particleTypeIndex]); |
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| 489 | } |
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| 490 | |
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| 491 | G4double x(std::log10(k/eV)); |
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| 492 | G4double y; |
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| 493 | |
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| 494 | if (x<x0[index][particleTypeIndex]) |
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| 495 | y=a0[index][particleTypeIndex] * x + b0[index][particleTypeIndex]; |
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| 496 | else if (x<x1[index][particleTypeIndex]) |
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| 497 | y=a0[index][particleTypeIndex] * x + b0[index][particleTypeIndex] - c0[index][particleTypeIndex] * std::pow(x - x0[index][particleTypeIndex], d0[index][particleTypeIndex]); |
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| 498 | else |
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| 499 | y=a1[index][particleTypeIndex] * x + b1[index][particleTypeIndex]; |
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| 500 | |
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| 501 | return f0[index][particleTypeIndex] * std::pow(10., y)*m*m; |
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| 502 | |
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| 503 | } |
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| 504 | |
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| 505 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 506 | |
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| 507 | G4int G4DNADingfelderChargeIncreaseModel::RandomSelect(G4double k, |
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| 508 | const G4ParticleDefinition* particleDefinition) |
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| 509 | { |
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| 510 | |
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| 511 | G4int particleTypeIndex = 0; |
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| 512 | G4DNAGenericIonsManager *instance; |
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| 513 | instance = G4DNAGenericIonsManager::Instance(); |
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| 514 | |
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| 515 | if (particleDefinition == instance->GetIon("hydrogen")) return 0; |
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| 516 | if (particleDefinition == instance->GetIon("alpha+")) particleTypeIndex=0; |
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| 517 | if (particleDefinition == instance->GetIon("helium")) particleTypeIndex=1; |
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| 518 | |
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| 519 | const G4int n = numberOfPartialCrossSections[particleTypeIndex]; |
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| 520 | G4double* values(new G4double[n]); |
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| 521 | G4double value = 0; |
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| 522 | G4int i = n; |
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| 523 | |
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| 524 | while (i>0) |
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| 525 | { |
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| 526 | i--; |
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| 527 | values[i]=PartialCrossSection(k, i, particleDefinition); |
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| 528 | value+=values[i]; |
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| 529 | } |
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| 530 | |
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| 531 | value*=G4UniformRand(); |
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| 532 | |
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| 533 | i=n; |
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| 534 | while (i>0) |
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| 535 | { |
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| 536 | i--; |
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| 537 | |
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| 538 | if (values[i]>value) |
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| 539 | break; |
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| 540 | |
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| 541 | value-=values[i]; |
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| 542 | } |
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| 543 | |
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| 544 | delete[] values; |
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| 545 | |
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| 546 | return i; |
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| 547 | } |
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| 548 | |
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| 549 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 550 | |
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| 551 | G4double G4DNADingfelderChargeIncreaseModel::Sum(G4double k, const G4ParticleDefinition* particleDefinition) |
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| 552 | { |
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| 553 | G4int particleTypeIndex = 0; |
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| 554 | G4DNAGenericIonsManager *instance; |
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| 555 | instance = G4DNAGenericIonsManager::Instance(); |
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| 556 | |
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| 557 | if (particleDefinition == instance->GetIon("alpha+")) particleTypeIndex=0; |
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| 558 | if (particleDefinition == instance->GetIon("helium")) particleTypeIndex=1; |
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| 559 | |
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| 560 | G4double totalCrossSection = 0.; |
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| 561 | |
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| 562 | for (G4int i=0; i<numberOfPartialCrossSections[particleTypeIndex]; i++) |
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| 563 | { |
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| 564 | totalCrossSection += PartialCrossSection(k,i,particleDefinition); |
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| 565 | } |
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| 566 | return totalCrossSection; |
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| 567 | } |
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