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Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 25 // 25 // >> 26 // $Id: G4NuclearStopping.cc 79188 2014-02-20 09:22:48Z gcosmo $ 26 // 27 // 27 // ------------------------------------------- 28 // ----------------------------------------------------------------------------- 28 // 29 // 29 // GEANT4 Class file 30 // GEANT4 Class file 30 // 31 // 31 // File name: G4NuclearStopping 32 // File name: G4NuclearStopping 32 // 33 // 33 // Author: Vladimir Ivanchenko 34 // Author: Vladimir Ivanchenko 34 // 35 // 35 // Creation date: 20 July 2009 36 // Creation date: 20 July 2009 36 // 37 // 37 // Modified: 38 // Modified: 38 // 39 // 39 // Warning: this class should be instantiated 40 // Warning: this class should be instantiated after G4ionIonisation 40 // 41 // 41 // ------------------------------------------- 42 // ----------------------------------------------------------------------------- 42 // 43 // 43 //....oooOO0OOooo........oooOO0OOooo........oo 44 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 44 //....oooOO0OOooo........oooOO0OOooo........oo 45 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 45 46 46 #include "G4NuclearStopping.hh" 47 #include "G4NuclearStopping.hh" 47 #include "G4ICRU49NuclearStoppingModel.hh" 48 #include "G4ICRU49NuclearStoppingModel.hh" 48 #include "G4SystemOfUnits.hh" 49 #include "G4SystemOfUnits.hh" 49 #include "G4PhysicalConstants.hh" 50 #include "G4PhysicalConstants.hh" 50 51 51 //....oooOO0OOooo........oooOO0OOooo........oo 52 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 52 53 53 using namespace std; 54 using namespace std; 54 55 55 G4NuclearStopping::G4NuclearStopping(const G4S 56 G4NuclearStopping::G4NuclearStopping(const G4String& processName) 56 : G4VEmProcess(processName) 57 : G4VEmProcess(processName) 57 { 58 { 58 isInitialized = false; 59 isInitialized = false; 59 SetProcessSubType(fNuclearStopping); 60 SetProcessSubType(fNuclearStopping); 60 SetBuildTableFlag(false); 61 SetBuildTableFlag(false); 61 enableAlongStepDoIt = true; 62 enableAlongStepDoIt = true; 62 enablePostStepDoIt = false; 63 enablePostStepDoIt = false; >> 64 modelICRU49 = 0; 63 } 65 } 64 66 65 //....oooOO0OOooo........oooOO0OOooo........oo 67 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 66 68 67 G4NuclearStopping::~G4NuclearStopping() = defa << 69 G4NuclearStopping::~G4NuclearStopping() >> 70 {} 68 71 69 //....oooOO0OOooo........oooOO0OOooo........oo 72 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 70 73 71 G4bool G4NuclearStopping::IsApplicable (const 74 G4bool G4NuclearStopping::IsApplicable (const G4ParticleDefinition& p) 72 { 75 { 73 return (p.GetPDGCharge() != 0.0); << 76 return (p.GetPDGCharge() != 0.0 && !p.IsShortLived()); 74 } 77 } 75 78 76 //....oooOO0OOooo........oooOO0OOooo........oo 79 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 77 80 78 void G4NuclearStopping::InitialiseProcess(cons 81 void G4NuclearStopping::InitialiseProcess(const G4ParticleDefinition*) 79 { 82 { 80 if(!isInitialized) { 83 if(!isInitialized) { 81 isInitialized = true; 84 isInitialized = true; 82 85 83 if(nullptr == EmModel(0)) { << 86 if(!EmModel(1)) { 84 SetEmModel(new G4ICRU49NuclearStoppingMo << 87 modelICRU49 = new G4ICRU49NuclearStoppingModel(); >> 88 SetEmModel(modelICRU49); 85 } 89 } 86 AddEmModel(1, EmModel()); 90 AddEmModel(1, EmModel()); 87 EmModel()->SetActivationHighEnergyLimit(10 << 88 EmModel()->SetParticleChange(&nParticleCha 91 EmModel()->SetParticleChange(&nParticleChange); 89 } 92 } 90 } 93 } 91 94 92 //....oooOO0OOooo........oooOO0OOooo........oo 95 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 93 96 94 G4double 97 G4double 95 G4NuclearStopping::AlongStepGetPhysicalInterac 98 G4NuclearStopping::AlongStepGetPhysicalInteractionLength( 96 const G4Track&, G4double, G4double, G4dou 99 const G4Track&, G4double, G4double, G4double&, G4GPILSelection* selection) 97 { 100 { 98 *selection = NotCandidateForSelection; 101 *selection = NotCandidateForSelection; 99 return DBL_MAX; 102 return DBL_MAX; 100 } 103 } 101 104 102 //....oooOO0OOooo........oooOO0OOooo........oo 105 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 103 106 104 G4VParticleChange* G4NuclearStopping::AlongSte 107 G4VParticleChange* G4NuclearStopping::AlongStepDoIt(const G4Track& track, 105 const G4Step& step) 108 const G4Step& step) 106 { 109 { 107 nParticleChange.InitializeForAlongStep(track 110 nParticleChange.InitializeForAlongStep(track); 108 111 109 // this line only valid if nuclear stopping 112 // this line only valid if nuclear stopping 110 // is computed after G4ionIonisation process 113 // is computed after G4ionIonisation process 111 nParticleChange.SetProposedCharge(step.GetPo 114 nParticleChange.SetProposedCharge(step.GetPostStepPoint()->GetCharge()); 112 115 113 G4double T2 = step.GetPostStepPoint()->GetKi 116 G4double T2 = step.GetPostStepPoint()->GetKineticEnergy(); 114 117 115 const G4ParticleDefinition* part = track.Get 118 const G4ParticleDefinition* part = track.GetParticleDefinition(); 116 G4double Z = std::abs(part->GetPDGCharge()/e << 119 G4double Z = std::fabs(part->GetPDGCharge()/eplus); 117 G4double massR = proton_mass_c2/part->GetPDG << 118 120 119 if(T2 > 0.0 && T2*massR < Z*Z*MeV) { << 121 if(T2 > 0.0 && T2*proton_mass_c2 < Z*Z*MeV*part->GetPDGMass()) { 120 122 121 G4double length = step.GetStepLength(); 123 G4double length = step.GetStepLength(); 122 if(length > 0.0) { 124 if(length > 0.0) { 123 125 124 // primary 126 // primary 125 G4double T1= step.GetPreStepPoint()->Get 127 G4double T1= step.GetPreStepPoint()->GetKineticEnergy(); 126 G4double T = 0.5*(T1 + T2); 128 G4double T = 0.5*(T1 + T2); 127 const G4MaterialCutsCouple* couple = tra 129 const G4MaterialCutsCouple* couple = track.GetMaterialCutsCouple(); 128 G4double Tscaled = T*massR; << 130 G4VEmModel* mod = SelectModel(T, couple->GetIndex()); 129 G4VEmModel* mod = SelectModel(Tscaled, c << 130 131 131 // sample stopping 132 // sample stopping 132 if(mod->IsActive(Tscaled)) { << 133 if(modelICRU49) { modelICRU49->SetFluctuationFlag(true); } 133 G4double nloss = << 134 G4double nloss = 134 length*mod->ComputeDEDXPerVolume(couple->G << 135 length*mod->ComputeDEDXPerVolume(couple->GetMaterial(), part, T); 135 nloss = std::min(nloss, T1); << 136 if(nloss > T1) { nloss = T1; } 136 nParticleChange.SetProposedKineticEnergy(T1 << 137 nParticleChange.SetProposedKineticEnergy(T1 - nloss); 137 nParticleChange.ProposeLocalEnergyDeposit(nl << 138 nParticleChange.ProposeLocalEnergyDeposit(nloss); 138 nParticleChange.ProposeNonIonizingEnergyDepo << 139 nParticleChange.ProposeNonIonizingEnergyDeposit(nloss); 139 } << 140 if(modelICRU49) { modelICRU49->SetFluctuationFlag(false); } 140 } 141 } 141 } 142 } 142 return &nParticleChange; 143 return &nParticleChange; 143 } 144 } 144 145 145 //....oooOO0OOooo........oooOO0OOooo........oo 146 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 146 147 147 void G4NuclearStopping::ProcessDescription(std << 148 void G4NuclearStopping::PrintInfo() 148 { << 149 {} 149 out << " Nuclear stopping"; << 150 150 G4VEmProcess::ProcessDescription(out); << 151 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... 151 } << 152 152 153 //....oooOO0OOooo........oooOO0OOooo........oo << 154 153