Geant4 Cross Reference |
1 // 1 2 // ******************************************* 3 // * License and Disclaimer 4 // * 5 // * The Geant4 software is copyright of th 6 // * the Geant4 Collaboration. It is provided 7 // * conditions of the Geant4 Software License 8 // * LICENSE and available at http://cern.ch/ 9 // * include a list of copyright holders. 10 // * 11 // * Neither the authors of this software syst 12 // * institutes,nor the agencies providing fin 13 // * work make any representation or warran 14 // * regarding this software system or assum 15 // * use. Please see the license in the file 16 // * for the full disclaimer and the limitatio 17 // * 18 // * This code implementation is the result 19 // * technical work of the GEANT4 collaboratio 20 // * By using, copying, modifying or distri 21 // * any work based on the software) you ag 22 // * use in resulting scientific publicati 23 // * acceptance of all terms of the Geant4 Sof 24 // ******************************************* 25 // 26 // 27 // ------------------------------------------- 28 // 29 // GEANT4 Class file 30 // 31 // 32 // File name: G4ionIonisation 33 // 34 // Author: Vladimir Ivanchenko 35 // 36 // Creation date: 07.05.2002 37 // 38 // Modifications: 39 // 40 // 23-12-02 Change interface in order to move 41 // 26-12-02 Secondary production moved to deri 42 // 13-02-03 SubCutoff regime is assigned to a 43 // 18-04-03 Use IonFluctuations (V.Ivanchenko) 44 // 03-08-03 Add effective charge (V.Ivanchenko 45 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossPro 46 // 27-05-04 Set integral to be a default regim 47 // 08-11-04 Migration to new interface of Stor 48 // 08-04-05 Major optimisation of internal int 49 // 10-01-06 SetStepLimits -> SetStepFunction ( 50 // 10-05-06 Add a possibility to download user 51 // 13-05-06 Add data for light ion stopping in 52 // 14-01-07 use SetEmModel() and SetFluctModel 53 // 16-05-07 Add data for light ion stopping on 54 // 07-11-07 Fill non-ionizing energy loss (V.I 55 // 12-09-08 Removed InitialiseMassCharge and C 56 // 57 // 58 // ------------------------------------------- 59 // 60 //....oooOO0OOooo........oooOO0OOooo........oo 61 //....oooOO0OOooo........oooOO0OOooo........oo 62 63 #include "G4ionIonisation.hh" 64 #include "G4PhysicalConstants.hh" 65 #include "G4SystemOfUnits.hh" 66 #include "G4Electron.hh" 67 #include "G4GenericIon.hh" 68 #include "G4BraggModel.hh" 69 #include "G4BraggIonModel.hh" 70 #include "G4BetheBlochModel.hh" 71 #include "G4LossTableManager.hh" 72 #include "G4EmParameters.hh" 73 #include "G4EmStandUtil.hh" 74 75 //....oooOO0OOooo........oooOO0OOooo........oo 76 77 G4ionIonisation::G4ionIonisation(const G4Strin 78 : G4VEnergyLossProcess(name) 79 { 80 SetLinearLossLimit(0.02); 81 SetProcessSubType(fIonisation); 82 SetSecondaryParticle(G4Electron::Electron()) 83 eth = 2*CLHEP::MeV; 84 } 85 86 //....oooOO0OOooo........oooOO0OOooo........oo 87 88 G4bool G4ionIonisation::IsApplicable(const G4P 89 { 90 return true; 91 } 92 93 //....oooOO0OOooo........oooOO0OOooo........oo 94 95 G4double G4ionIonisation::MinPrimaryEnergy(con 96 const G4Material*, 97 G4double cut) 98 { 99 return p->GetPDGMass()*(std::sqrt(1. + 0.5*c 100 } 101 102 //....oooOO0OOooo........oooOO0OOooo........oo 103 104 void G4ionIonisation::InitialiseEnergyLossProc 105 const G4ParticleDefinition* part, 106 const G4ParticleDefinition* bpart) 107 { 108 const G4ParticleDefinition* ion = G4GenericI 109 110 if(!isInitialised) { 111 theParticle = part; 112 113 // define base particle 114 const G4ParticleDefinition* theBaseParticl 115 const G4int pdg = part->GetPDGEncoding(); 116 117 if(part == bpart) { 118 theBaseParticle = nullptr; 119 } else if(nullptr != bpart) { 120 theBaseParticle = bpart; 121 } else if(part == ion || pdg == 1000020040 122 theBaseParticle = nullptr; 123 } else { 124 theBaseParticle = ion; 125 } 126 SetBaseParticle(theBaseParticle); 127 128 // model limit defined for protons 129 eth = 2*CLHEP::MeV*part->GetPDGMass()/CLHE 130 131 G4EmParameters* param = G4EmParameters::In 132 G4double emin = param->MinKinEnergy(); 133 G4double emax = param->MaxKinEnergy(); 134 135 // define model of energy loss fluctuation 136 if (nullptr == FluctModel()) { 137 SetFluctModel(G4EmStandUtil::ModelOfFluc 138 } 139 140 if (nullptr == EmModel(0)) { 141 if (pdg == 1000020040) { 142 SetEmModel(new G4BraggIonModel()); 143 } else { 144 SetEmModel(new G4BraggModel()); 145 } 146 } 147 // to compute ranges correctly we have to 148 // model even if activation limit is high 149 EmModel(0)->SetLowEnergyLimit(emin); 150 151 // high energy limit may be eth or DBL_MAX 152 G4double emax1 = (EmModel(0)->HighEnergyLi 153 EmModel(0)->SetHighEnergyLimit(emax1); 154 AddEmModel(1, EmModel(0), FluctModel()); 155 156 // second model is used if the first does 157 if(emax1 < emax) { 158 if (nullptr == EmModel(1)) { SetEmModel( 159 EmModel(1)->SetLowEnergyLimit(emax1); 160 161 // for extremely heavy particles upper l 162 // should be increased 163 emax = std::max(emax, eth*10); 164 EmModel(1)->SetHighEnergyLimit(emax); 165 AddEmModel(2, EmModel(1), FluctModel()); 166 } 167 isInitialised = true; 168 } 169 } 170 171 //....oooOO0OOooo........oooOO0OOooo........oo 172 173 void G4ionIonisation::ProcessDescription(std:: 174 { 175 out << " Ion ionisation"; 176 G4VEnergyLossProcess::ProcessDescription(out 177 } 178 179 //....oooOO0OOooo........oooOO0OOooo........oo 180