[819] | 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: G4eeToHadronsMultiModel.hh,v 1.5 2007/05/23 08:50:41 vnivanch Exp $ |
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| 27 | // GEANT4 tag $Name: $ |
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| 28 | // |
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| 29 | // ------------------------------------------------------------------- |
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| 30 | // |
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| 31 | // GEANT4 Class header file |
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| 32 | // |
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| 33 | // |
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| 34 | // File name: G4eeToHadronsMultiModel |
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| 35 | // |
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| 36 | // Author: Vladimir Ivanchenko |
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| 37 | // |
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| 38 | // Creation date: 18.05.2005 |
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| 39 | // |
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| 40 | // Modifications: |
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| 41 | // |
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| 42 | |
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| 43 | // |
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| 44 | // Class Description: vector of e+e- -> hadrons models |
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| 45 | // |
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| 46 | |
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| 47 | // ------------------------------------------------------------------- |
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| 48 | // |
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| 49 | |
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| 50 | #ifndef G4eeToHadronsMultiModel_h |
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| 51 | #define G4eeToHadronsMultiModel_h 1 |
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| 52 | |
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| 53 | #include "G4VEmModel.hh" |
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| 54 | #include "G4eeToHadronsModel.hh" |
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| 55 | #include "G4ParticleChangeForGamma.hh" |
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| 56 | #include "G4TrackStatus.hh" |
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| 57 | #include "Randomize.hh" |
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| 58 | #include <vector> |
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| 59 | |
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| 60 | class G4eeCrossSections; |
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| 61 | |
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| 62 | class G4eeToHadronsMultiModel : public G4VEmModel |
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| 63 | { |
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| 64 | |
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| 65 | public: |
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| 66 | |
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| 67 | G4eeToHadronsMultiModel(G4int ver=0, const G4String& nam = "eeToHadrons"); |
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| 68 | |
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| 69 | virtual ~G4eeToHadronsMultiModel(); |
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| 70 | |
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| 71 | virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&); |
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| 72 | |
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| 73 | virtual G4double CrossSectionPerVolume(const G4Material*, |
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| 74 | const G4ParticleDefinition*, |
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| 75 | G4double kineticEnergy, |
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| 76 | G4double cutEnergy, |
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| 77 | G4double maxEnergy); |
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| 78 | |
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| 79 | virtual G4double ComputeCrossSectionPerAtom( |
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| 80 | const G4ParticleDefinition*, |
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| 81 | G4double kineticEnergy, |
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| 82 | G4double Z, G4double A, |
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| 83 | G4double cutEnergy = 0.0, |
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| 84 | G4double maxEnergy = DBL_MAX); |
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| 85 | |
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| 86 | virtual G4double ComputeCrossSectionPerElectron( |
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| 87 | const G4ParticleDefinition*, |
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| 88 | G4double kineticEnergy, |
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| 89 | G4double cutEnergy = 0.0, |
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| 90 | G4double maxEnergy = DBL_MAX); |
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| 91 | |
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| 92 | virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*, |
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| 93 | const G4MaterialCutsCouple*, |
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| 94 | const G4DynamicParticle*, |
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| 95 | G4double tmin = 0.0, |
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| 96 | G4double maxEnergy = DBL_MAX); |
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| 97 | |
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| 98 | void PrintInfo(); |
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| 99 | |
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| 100 | // Set the factor to artificially increase the crossSection (default 1) |
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| 101 | void SetCrossSecFactor(G4double fac); |
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| 102 | |
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| 103 | private: |
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| 104 | |
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| 105 | // hide assignment operator |
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| 106 | G4eeToHadronsMultiModel & operator=(const G4eeToHadronsMultiModel &right); |
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| 107 | G4eeToHadronsMultiModel(const G4eeToHadronsMultiModel&); |
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| 108 | |
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| 109 | G4eeCrossSections* cross; |
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| 110 | G4ParticleChangeForGamma* fParticleChange; |
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| 111 | |
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| 112 | std::vector<G4eeToHadronsModel*> models; |
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| 113 | |
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| 114 | std::vector<G4double> ekinMin; |
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| 115 | std::vector<G4double> ekinPeak; |
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| 116 | std::vector<G4double> ekinMax; |
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| 117 | std::vector<G4double> cumSum; |
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| 118 | |
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| 119 | G4double thKineticEnergy; |
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| 120 | G4double maxKineticEnergy; |
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| 121 | G4double csFactor; |
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| 122 | |
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| 123 | G4int nModels; |
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| 124 | G4int verbose; |
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| 125 | G4bool isInitialised; |
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| 126 | }; |
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| 127 | |
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| 128 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 129 | |
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| 130 | inline G4double G4eeToHadronsMultiModel::CrossSectionPerVolume( |
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| 131 | const G4Material* mat, |
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| 132 | const G4ParticleDefinition* p, |
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| 133 | G4double kineticEnergy, |
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| 134 | G4double, G4double) |
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| 135 | { |
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| 136 | return mat->GetElectronDensity()* |
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| 137 | ComputeCrossSectionPerElectron(p, kineticEnergy); |
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| 138 | } |
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| 139 | |
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| 140 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 141 | |
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| 142 | inline G4double G4eeToHadronsMultiModel::ComputeCrossSectionPerAtom( |
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| 143 | const G4ParticleDefinition* p, |
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| 144 | G4double kineticEnergy, |
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| 145 | G4double Z, G4double, |
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| 146 | G4double, G4double) |
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| 147 | { |
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| 148 | return Z*ComputeCrossSectionPerElectron(p, kineticEnergy); |
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| 149 | } |
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| 150 | |
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| 151 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 152 | |
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| 153 | inline G4double G4eeToHadronsMultiModel::ComputeCrossSectionPerElectron( |
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| 154 | const G4ParticleDefinition*, |
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| 155 | G4double kineticEnergy, |
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| 156 | G4double, G4double) |
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| 157 | { |
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| 158 | G4double res = 0.0; |
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| 159 | if (kineticEnergy > thKineticEnergy) { |
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| 160 | for(G4int i=0; i<nModels; i++) { |
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| 161 | if(kineticEnergy >= ekinMin[i] && kineticEnergy <= ekinMax[i]) |
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| 162 | res += (models[i])->ComputeCrossSectionPerElectron(0,kineticEnergy); |
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| 163 | cumSum[i] = res; |
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| 164 | } |
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| 165 | } |
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| 166 | return res*csFactor; |
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| 167 | } |
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| 168 | |
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| 169 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 170 | |
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| 171 | inline |
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| 172 | void G4eeToHadronsMultiModel::SampleSecondaries(std::vector<G4DynamicParticle*>* newp, |
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| 173 | const G4MaterialCutsCouple* couple, |
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| 174 | const G4DynamicParticle* dp, |
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| 175 | G4double, G4double) |
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| 176 | { |
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| 177 | G4double kinEnergy = dp->GetKineticEnergy(); |
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| 178 | if (kinEnergy > thKineticEnergy) { |
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| 179 | G4double q = cumSum[nModels-1]*G4UniformRand(); |
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| 180 | for(G4int i=0; i<nModels; i++) { |
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| 181 | if(q <= cumSum[i]) { |
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| 182 | (models[i])->SampleSecondaries(newp, couple,dp); |
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| 183 | if(newp->size() > 0) fParticleChange->ProposeTrackStatus(fStopAndKill); |
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| 184 | break; |
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| 185 | } |
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| 186 | } |
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| 187 | } |
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| 188 | } |
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| 189 | |
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| 190 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 191 | |
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| 192 | #endif |
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