[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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[1005] | 26 | // $Id: G4FinalStateChargeDecrease.cc,v 1.4 2009/01/20 07:50:28 sincerti Exp $ |
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| 27 | // GEANT4 tag $Name: geant4-09-02-ref-02 $ |
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[819] | 28 | |
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| 29 | #include "G4FinalStateChargeDecrease.hh" |
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| 30 | |
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[961] | 31 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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[819] | 32 | |
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| 33 | G4FinalStateChargeDecrease::G4FinalStateChargeDecrease() |
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| 34 | { |
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| 35 | lowEnergyLimit = 1 * keV; |
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| 36 | highEnergyLimit = 10 * MeV; |
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| 37 | } |
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| 38 | |
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[961] | 39 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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[819] | 40 | |
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| 41 | G4FinalStateChargeDecrease::~G4FinalStateChargeDecrease() |
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| 42 | {} |
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| 43 | |
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[961] | 44 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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[819] | 45 | |
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| 46 | const G4FinalStateProduct& G4FinalStateChargeDecrease::GenerateFinalState(const G4Track& track, const G4Step& /* step */) |
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| 47 | { |
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| 48 | product.Clear(); |
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| 49 | |
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| 50 | G4double inK = track.GetDynamicParticle()->GetKineticEnergy(); |
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| 51 | |
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| 52 | G4ParticleDefinition* definition = track.GetDefinition(); |
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| 53 | G4int finalStateIndex = cross.RandomSelect(inK,definition); |
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| 54 | |
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| 55 | G4int n = NumberOfFinalStates(definition, finalStateIndex); |
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| 56 | G4double waterBindingEnergy = WaterBindingEnergyConstant(definition, finalStateIndex); |
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| 57 | G4double outgoingParticleBindingEnergy = OutgoingParticleBindingEnergyConstant(definition, finalStateIndex); |
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| 58 | |
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| 59 | G4double outK = 0.; |
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| 60 | if (definition==G4Proton::Proton()) |
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| 61 | outK = inK - n*(inK*electron_mass_c2/proton_mass_c2) - waterBindingEnergy + outgoingParticleBindingEnergy; |
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| 62 | else |
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| 63 | outK = inK - n*(inK*electron_mass_c2/(3728*MeV)) - waterBindingEnergy + outgoingParticleBindingEnergy; |
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| 64 | |
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| 65 | if (outK<0) |
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[961] | 66 | { |
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| 67 | G4String message; |
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| 68 | message="ChargeDecreaseDingfelder::GenerateFinalState - Final kinetic energy is below 0! Process "; |
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| 69 | G4Exception(message); |
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| 70 | } |
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[819] | 71 | |
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[1005] | 72 | //SI - Added protection against total energy deposit |
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| 73 | product.DoNotDepositEnergy(); |
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| 74 | // |
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[819] | 75 | product.KillPrimaryParticle(); |
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[1005] | 76 | |
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[819] | 77 | product.AddEnergyDeposit(waterBindingEnergy); |
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[1005] | 78 | |
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[819] | 79 | G4DynamicParticle* aSecondary = new G4DynamicParticle(OutgoingParticleDefinition(definition, finalStateIndex), |
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| 80 | track.GetDynamicParticle()->GetMomentumDirection(), |
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| 81 | outK); |
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| 82 | |
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| 83 | product.AddSecondary(aSecondary); |
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| 84 | |
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| 85 | return product; |
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| 86 | } |
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| 87 | |
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[961] | 88 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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| 89 | |
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[819] | 90 | G4int G4FinalStateChargeDecrease::NumberOfFinalStates(G4ParticleDefinition* particleDefinition, |
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| 91 | G4int finalStateIndex ) |
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| 92 | |
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| 93 | { |
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| 94 | if (particleDefinition == G4Proton::Proton()) return 1; |
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| 95 | |
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| 96 | G4DNAGenericIonsManager*instance; |
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| 97 | instance = G4DNAGenericIonsManager::Instance(); |
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| 98 | |
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| 99 | if (particleDefinition == instance->GetIon("alpha++") ) |
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[961] | 100 | { |
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| 101 | if (finalStateIndex==0) return 1; |
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| 102 | return 2; |
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| 103 | } |
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[819] | 104 | |
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| 105 | if (particleDefinition == instance->GetIon("alpha+") ) return 1; |
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| 106 | |
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| 107 | return 0; |
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| 108 | } |
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| 109 | |
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[961] | 110 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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[819] | 111 | |
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| 112 | G4ParticleDefinition* G4FinalStateChargeDecrease::OutgoingParticleDefinition (G4ParticleDefinition* particleDefinition, |
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| 113 | G4int finalStateIndex) |
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| 114 | { |
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| 115 | G4DNAGenericIonsManager * instance(G4DNAGenericIonsManager::Instance()); |
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| 116 | |
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| 117 | if (particleDefinition == G4Proton::Proton()) return instance->GetIon("hydrogen"); |
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| 118 | |
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| 119 | if (particleDefinition == instance->GetIon("alpha++") ) |
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[961] | 120 | { |
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| 121 | if (finalStateIndex == 0) return instance->GetIon("alpha+"); |
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| 122 | return instance->GetIon("helium"); |
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| 123 | } |
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[819] | 124 | |
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| 125 | if (particleDefinition == instance->GetIon("alpha+") ) return instance->GetIon("helium"); |
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| 126 | |
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| 127 | return 0; |
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| 128 | } |
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| 129 | |
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[961] | 130 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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[819] | 131 | |
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| 132 | G4double G4FinalStateChargeDecrease::WaterBindingEnergyConstant(G4ParticleDefinition* particleDefinition, |
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| 133 | G4int finalStateIndex ) |
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| 134 | { |
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| 135 | // Ionization energy of first water shell |
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| 136 | // Rad. Phys. Chem. 59 p.267 by Dingf. et al. |
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| 137 | // W + 10.79 eV -> W+ + e- |
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| 138 | |
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| 139 | G4DNAGenericIonsManager * instance(G4DNAGenericIonsManager::Instance()); |
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| 140 | |
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| 141 | if(particleDefinition == G4Proton::Proton()) return 10.79*eV; |
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| 142 | |
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| 143 | if (particleDefinition == instance->GetIon("alpha++") ) |
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[961] | 144 | { |
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[819] | 145 | // Binding energy for W+ -> W++ + e- 10.79 eV |
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| 146 | // Binding energy for W -> W+ + e- 10.79 eV |
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| 147 | // |
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| 148 | // Ionization energy of first water shell |
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| 149 | // Rad. Phys. Chem. 59 p.267 by Dingf. et al. |
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| 150 | |
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| 151 | if (finalStateIndex == 0) return 10.79*eV; |
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| 152 | |
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| 153 | return 10.79*2*eV; |
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[961] | 154 | } |
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[819] | 155 | |
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| 156 | if (particleDefinition == instance->GetIon("alpha+") ) |
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[961] | 157 | { |
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[819] | 158 | // Binding energy for W+ -> W++ + e- 10.79 eV |
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| 159 | // Binding energy for W -> W+ + e- 10.79 eV |
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| 160 | // |
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| 161 | // Ionization energy of first water shell |
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| 162 | // Rad. Phys. Chem. 59 p.267 by Dingf. et al. |
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| 163 | |
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| 164 | return 10.79*eV; |
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[961] | 165 | } |
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[819] | 166 | |
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| 167 | return 0; |
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| 168 | } |
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| 169 | |
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[961] | 170 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
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[819] | 171 | |
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| 172 | G4double G4FinalStateChargeDecrease::OutgoingParticleBindingEnergyConstant(G4ParticleDefinition* particleDefinition, |
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| 173 | G4int finalStateIndex) |
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| 174 | { |
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| 175 | G4DNAGenericIonsManager * instance(G4DNAGenericIonsManager::Instance()); |
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| 176 | |
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| 177 | if(particleDefinition == G4Proton::Proton()) return 13.6*eV; |
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| 178 | |
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| 179 | if (particleDefinition == instance->GetIon("alpha++") ) |
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[961] | 180 | { |
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[819] | 181 | // Binding energy for He+ -> He++ + e- 54.509 eV |
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| 182 | // Binding energy for He -> He+ + e- 24.587 eV |
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| 183 | |
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| 184 | if (finalStateIndex==0) return 54.509*eV; |
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| 185 | |
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| 186 | return (54.509 + 24.587)*eV; |
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[961] | 187 | } |
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[819] | 188 | |
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| 189 | if (particleDefinition == instance->GetIon("alpha+") ) |
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[961] | 190 | { |
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[819] | 191 | // Binding energy for He+ -> He++ + e- 54.509 eV |
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| 192 | // Binding energy for He -> He+ + e- 24.587 eV |
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| 193 | |
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| 194 | return 24.587*eV; |
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[961] | 195 | } |
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[819] | 196 | |
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| 197 | return 0; |
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| 198 | } |
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| 199 | |
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