[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 | // |
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| 27 | // ------------------------------------------------------------------- |
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| 28 | // |
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| 29 | // GEANT4 Class file |
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| 30 | // |
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| 31 | // |
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| 32 | // File name: G4hNuclearStoppingModel |
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| 33 | // |
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| 34 | // Author: V.Ivanchenko (Vladimir.Ivanchenko@cern.ch) |
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| 35 | // |
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| 36 | // Creation date: 20 July 2000 |
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| 37 | // |
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| 38 | // Modifications: |
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| 39 | // 20/07/2000 V.Ivanchenko First implementation |
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| 40 | // 22/08/2000 V.Ivanchenko Bug fixed in call of a model |
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| 41 | // 03/10/2000 V.Ivanchenko CodeWizard clean up |
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| 42 | // |
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| 43 | // Class Description: |
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| 44 | // |
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| 45 | // Low energy protons/ions nuclear stopping parametrisation |
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| 46 | // |
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| 47 | // Class Description: End |
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| 48 | // |
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| 49 | // ------------------------------------------------------------------- |
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| 50 | // |
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| 51 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 52 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 53 | |
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| 54 | #include "G4hNuclearStoppingModel.hh" |
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| 55 | #include "G4UnitsTable.hh" |
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| 56 | #include "globals.hh" |
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| 57 | #include "G4hZiegler1977Nuclear.hh" |
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| 58 | #include "G4hZiegler1985Nuclear.hh" |
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| 59 | #include "G4hICRU49Nuclear.hh" |
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| 60 | #include "G4DynamicParticle.hh" |
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| 61 | #include "G4ParticleDefinition.hh" |
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| 62 | #include "G4ElementVector.hh" |
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| 63 | #include "G4Material.hh" |
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| 64 | |
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| 65 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 66 | |
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| 67 | G4hNuclearStoppingModel::G4hNuclearStoppingModel(const G4String& name) |
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| 68 | :G4VLowEnergyModel(name), modelName(name) |
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| 69 | { |
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| 70 | InitializeMe() ; |
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| 71 | } |
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| 72 | |
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| 73 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 74 | |
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| 75 | void G4hNuclearStoppingModel::InitializeMe() |
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| 76 | { |
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| 77 | // Constants |
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| 78 | highEnergyLimit = 100.*MeV ; |
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| 79 | lowEnergyLimit = 1.*eV ; |
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| 80 | factorPDG2AMU = 1.007276/proton_mass_c2 ; |
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| 81 | theZieglerFactor= eV*cm2*1.0e-15 ; |
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| 82 | |
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| 83 | // Registration of parametrisation models of nuclear energy losses |
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| 84 | G4String blank = G4String(" ") ; |
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| 85 | G4String zi77 = G4String("Ziegler1977") ; |
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| 86 | G4String ir49 = G4String("ICRU_R49") ; |
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| 87 | G4String zi85 = G4String("Ziegler1985") ; |
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| 88 | if(zi77 == modelName) { |
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| 89 | nStopingPowerTable = new G4hZiegler1977Nuclear(); |
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| 90 | |
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| 91 | } else if(ir49 == modelName || blank == modelName) { |
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| 92 | nStopingPowerTable = new G4hICRU49Nuclear(); |
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| 93 | |
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| 94 | } else if(zi85 == modelName) { |
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| 95 | nStopingPowerTable = new G4hZiegler1985Nuclear(); |
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| 96 | |
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| 97 | } else { |
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| 98 | G4cout << |
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| 99 | "G4hLowEnergyIonisation warning: There is no table with the modelName <" |
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| 100 | << modelName << ">" |
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| 101 | << " for nuclear stopping, <ICRU_R49> is applied " |
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| 102 | << G4endl; |
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| 103 | nStopingPowerTable = new G4hICRU49Nuclear(); |
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| 104 | } |
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| 105 | |
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| 106 | // Default is nuclear stopping fluctuations On |
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| 107 | // nStopingPowerTable->SetNuclearStoppingFluctuationsOn(); |
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| 108 | nStopingPowerTable->SetNuclearStoppingFluctuationsOff(); |
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| 109 | } |
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| 110 | |
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| 111 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 112 | |
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| 113 | G4hNuclearStoppingModel::~G4hNuclearStoppingModel() |
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| 114 | { |
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| 115 | delete nStopingPowerTable; |
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| 116 | } |
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| 117 | |
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| 118 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 119 | |
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| 120 | G4double G4hNuclearStoppingModel::TheValue( |
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| 121 | const G4DynamicParticle* particle, |
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| 122 | const G4Material* material) |
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| 123 | { |
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| 124 | // Projectile nucleus |
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| 125 | G4double energy = particle->GetKineticEnergy() ; |
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| 126 | G4double z1 = std::abs((particle->GetCharge())/eplus) ; |
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| 127 | G4double m1 = (particle->GetMass())*factorPDG2AMU ; |
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| 128 | |
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| 129 | G4double nloss = StoppingPower(material, energy, z1, m1) * theZieglerFactor; |
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| 130 | |
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| 131 | return nloss; |
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| 132 | } |
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| 133 | |
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| 134 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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| 135 | |
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| 136 | G4double G4hNuclearStoppingModel::TheValue( |
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| 137 | const G4ParticleDefinition* aParticle, |
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| 138 | const G4Material* material, |
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| 139 | G4double kineticEnergy) |
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| 140 | { |
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| 141 | // Projectile nucleus |
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| 142 | G4double z1 = std::abs((aParticle->GetPDGCharge())/eplus) ; |
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| 143 | G4double m1 = (aParticle->GetPDGMass())*factorPDG2AMU ; |
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| 144 | |
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| 145 | G4double nloss = StoppingPower(material, kineticEnergy, z1, m1) |
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| 146 | * theZieglerFactor; |
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| 147 | |
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| 148 | return nloss; |
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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 | G4double G4hNuclearStoppingModel::StoppingPower( |
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| 154 | const G4Material* material, |
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| 155 | G4double kineticEnergy, |
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| 156 | G4double z1, G4double m1) const |
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| 157 | { |
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| 158 | // Target nucleus |
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| 159 | G4int NumberOfElements = material->GetNumberOfElements() ; |
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| 160 | if(0 == NumberOfElements) return 0.0 ; |
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| 161 | |
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| 162 | const G4ElementVector* theElementVector = |
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| 163 | material->GetElementVector() ; |
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| 164 | const G4double* theAtomicNumDensityVector = |
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| 165 | material->GetAtomicNumDensityVector() ; |
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| 166 | |
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| 167 | // loop for the elements in the material |
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| 168 | |
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| 169 | G4double nloss = 0.0; |
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| 170 | |
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| 171 | for (G4int iel=0; iel<NumberOfElements; iel++) { |
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| 172 | const G4Element* element = (*theElementVector)[iel] ; |
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| 173 | G4double z2 = element->GetZ(); |
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| 174 | G4double m2 = element->GetA()*mole/g ; |
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| 175 | nloss += (nStopingPowerTable-> |
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| 176 | NuclearStoppingPower(kineticEnergy, z1, z2, m1, m2)) |
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| 177 | * theAtomicNumDensityVector[iel] ; |
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| 178 | } |
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| 179 | |
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| 180 | return nloss; |
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| 181 | } |
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| 182 | |
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| 183 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... |
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