Geant4 Cross Reference |
1 // 1 // 2 // ******************************************* 2 // ******************************************************************** 3 // * License and Disclaimer << 3 // * DISCLAIMER * 4 // * 4 // * * 5 // * The Geant4 software is copyright of th << 5 // * The following disclaimer summarizes all the specific disclaimers * 6 // * the Geant4 Collaboration. It is provided << 6 // * of contributors to this software. The specific disclaimers,which * 7 // * conditions of the Geant4 Software License << 7 // * govern, are listed with their locations in: * 8 // * LICENSE and available at http://cern.ch/ << 8 // * http://cern.ch/geant4/license * 9 // * include a list of copyright holders. << 10 // * 9 // * * 11 // * Neither the authors of this software syst 10 // * Neither the authors of this software system, nor their employing * 12 // * institutes,nor the agencies providing fin 11 // * institutes,nor the agencies providing financial support for this * 13 // * work make any representation or warran 12 // * work make any representation or warranty, express or implied, * 14 // * regarding this software system or assum 13 // * regarding this software system or assume any liability for its * 15 // * use. Please see the license in the file << 14 // * use. * 16 // * for the full disclaimer and the limitatio << 17 // * 15 // * * 18 // * This code implementation is the result << 16 // * This code implementation is the intellectual property of the * 19 // * technical work of the GEANT4 collaboratio << 17 // * GEANT4 collaboration. * 20 // * By using, copying, modifying or distri << 18 // * By copying, distributing or modifying the Program (or any work * 21 // * any work based on the software) you ag << 19 // * based on the Program) you indicate your acceptance of this * 22 // * use in resulting scientific publicati << 20 // * statement, and all its terms. * 23 // * acceptance of all terms of the Geant4 Sof << 24 // ******************************************* 21 // ******************************************************************** 25 // 22 // 26 // 23 // 27 // ------------------------------------------- 24 // ------------------------------------------------------------------- 28 // 25 // 29 // GEANT4 Class header file 26 // GEANT4 Class header file 30 // 27 // 31 // 28 // 32 // File name: G4ionIonisation 29 // File name: G4ionIonisation 33 // 30 // 34 // Author: Vladimir Ivanchenko 31 // Author: Vladimir Ivanchenko 35 // 32 // 36 // Creation date: 07.05.2002 33 // Creation date: 07.05.2002 37 // 34 // 38 // Modifications: 35 // Modifications: 39 // 36 // 40 // 26-12-02 Secondary production moved to deri 37 // 26-12-02 Secondary production moved to derived classes (VI) 41 // 24-01-03 Make models region aware (V.Ivanch 38 // 24-01-03 Make models region aware (V.Ivanchenko) 42 // 05-02-03 Fix compilation warnings (V.Ivanch 39 // 05-02-03 Fix compilation warnings (V.Ivanchenko) 43 // 13-02-03 SubCutoff regime is assigned to a 40 // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko) 44 // 15-02-03 Add control on delta pointer (V.Iv 41 // 15-02-03 Add control on delta pointer (V.Ivanchenko) 45 // 23-05-03 Add fluctuation model as a member << 46 // 03-08-03 Add effective charge and saturatio << 47 // 12-11-03 Fix problem of negative effective << 48 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossPro << 49 // 21-01-04 Migrade to G4ParticleChangeForLoss << 50 // 08-11-04 Migration to new interface of Stor << 51 // 08-04-05 Major optimisation of internal int << 52 // 11-04-05 Move MaxSecondary energy to model << 53 // 11-04-04 Move MaxSecondaryEnergy to models << 54 // 10-05-06 Add a possibility to download user << 55 // 22-07-06 Remove obsolete method (V.Ivantche << 56 // 07-11-07 Moved CorrectionsAlongStep to cc ( << 57 // 12-09-08 Removed InitialiseMassCharge and C << 58 // 42 // 59 // Class Description: 43 // Class Description: 60 // 44 // 61 // This class manages the ionisation process f << 45 // This class manages the ionisation process for ions. 62 // nuclear stopping power, energy loss correct << 46 // it inherites from G4VContinuousDiscreteProcess via G4VEnergyLoss. 63 // It inherites from G4VEnergyLossLoss. << 64 // 47 // 65 48 66 // ------------------------------------------- 49 // ------------------------------------------------------------------- 67 // 50 // 68 51 69 #ifndef G4ionIonisation_h 52 #ifndef G4ionIonisation_h 70 #define G4ionIonisation_h 1 53 #define G4ionIonisation_h 1 71 54 72 #include "G4VEnergyLossProcess.hh" << 55 #include "G4VEnergyLossSTD.hh" 73 56 74 class G4Material; 57 class G4Material; 75 58 76 class G4ionIonisation : public G4VEnergyLossPr << 59 class G4ionIonisation : public G4VEnergyLossSTD 77 { 60 { >> 61 78 public: 62 public: 79 63 80 explicit G4ionIonisation(const G4String& nam << 64 G4ionIonisation(const G4String& name = "ionIoni"); 81 65 82 ~G4ionIonisation() override = default; << 66 ~G4ionIonisation(); 83 67 84 G4bool IsApplicable(const G4ParticleDefiniti << 68 G4bool IsApplicable(const G4ParticleDefinition& p); 85 69 86 void AddStoppingData(G4int Z, G4int A, const << 70 virtual G4double MinPrimaryEnergy(const G4ParticleDefinition* p, 87 G4PhysicsVector* dVector); << 71 const G4Material*, G4double cut); 88 72 89 void ActivateStoppingData(G4bool); << 73 virtual G4std::vector<G4Track*>* SecondariesAlongStep( >> 74 const G4Step&, >> 75 G4double&, >> 76 G4double&, >> 77 G4double&); 90 78 91 // print documentation in html format << 79 virtual void SecondariesPostStep( 92 void ProcessDescription(std::ostream&) const << 80 G4VEmModel*, >> 81 const G4MaterialCutsCouple*, >> 82 const G4DynamicParticle*, >> 83 G4double&, >> 84 G4double&); 93 85 94 // hide assignment operator << 86 void SetSubCutoff(G4bool val); 95 G4ionIonisation & operator=(const G4ionIonis << 87 96 G4ionIonisation(const G4ionIonisation&) = de << 88 void PrintInfoDefinition() const; >> 89 // Print out of the class parameters 97 90 98 protected: 91 protected: 99 92 100 void InitialiseEnergyLossProcess(const G4Par << 93 const G4ParticleDefinition* DefineBaseParticle(const G4ParticleDefinition* p); 101 const G4ParticleDefinition*) overri << 102 94 103 G4double MinPrimaryEnergy(const G4ParticleDe << 95 virtual G4double GetMeanFreePath(const G4Track& track, 104 const G4Material*, G4double cut) fin << 96 G4double previousStepSize, >> 97 G4ForceCondition* condition); 105 98 106 inline G4double BetheBlochEnergyThreshold(); << 99 virtual G4double MaxSecondaryEnergy(const G4DynamicParticle* dynParticle); 107 100 108 private: 101 private: 109 102 >> 103 void InitialiseProcess(); 110 104 111 const G4ParticleDefinition* theParticle = nu << 105 // hide assignment operator 112 G4double eth; << 106 G4ionIonisation & operator=(const G4ionIonisation &right); >> 107 G4ionIonisation(const G4ionIonisation&); 113 108 114 G4bool isInitialised = false; << 109 const G4ParticleDefinition* theParticle; >> 110 const G4ParticleDefinition* theBaseParticle; >> 111 G4bool subCutoff; 115 }; 112 }; 116 113 117 //....oooOO0OOooo........oooOO0OOooo........oo 114 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... >> 115 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... >> 116 >> 117 inline G4bool G4ionIonisation::IsApplicable(const G4ParticleDefinition& p) >> 118 { >> 119 return (p.GetPDGCharge() != 0.0 && p.GetParticleType() == "nucleus"); >> 120 } >> 121 >> 122 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... >> 123 >> 124 inline G4double G4ionIonisation::MinPrimaryEnergy( >> 125 const G4ParticleDefinition* p, const G4Material*, G4double cut) >> 126 { >> 127 G4double mass = p->GetPDGMass(); >> 128 G4double x = 0.5*cut/electron_mass_c2; >> 129 // G4double y = electron_mass_c2/mass; >> 130 // G4double g = x*y + sqrt((1. + x)*(1. + x*y*y)); >> 131 G4double g = sqrt(1. + x); >> 132 return mass*(g - 1.0); >> 133 } >> 134 >> 135 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... >> 136 >> 137 inline G4double G4ionIonisation::MaxSecondaryEnergy(const G4DynamicParticle* dynParticle) >> 138 { >> 139 G4double mass = dynParticle->GetMass(); >> 140 G4double gamma = dynParticle->GetKineticEnergy()/mass + 1.0; >> 141 G4double ratio = electron_mass_c2/mass; >> 142 G4double tmax = 2.0*electron_mass_c2*(gamma*gamma - 1.) / >> 143 (1. + 2.0*gamma*ratio + ratio*ratio); >> 144 return tmax; >> 145 } >> 146 >> 147 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... >> 148 >> 149 >> 150 inline G4double G4ionIonisation::GetMeanFreePath(const G4Track& track, >> 151 G4double step, >> 152 G4ForceCondition* cond) >> 153 { >> 154 const G4DynamicParticle* dp = track.GetDynamicParticle(); >> 155 G4double mRatio = proton_mass_c2/dp->GetMass(); >> 156 G4double q = dp->GetCharge()/eplus; >> 157 G4double q_2 = q*q; >> 158 SetMassRatio(mRatio); >> 159 SetReduceFactor(1.0/(q_2*mRatio)); >> 160 SetChargeSquare(q_2); >> 161 SetChargeSquareRatio(q_2); >> 162 >> 163 return G4VEnergyLossSTD::GetMeanFreePath(track, step, cond); >> 164 } >> 165 >> 166 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... >> 167 >> 168 #include "G4VSubCutoffProcessor.hh" >> 169 >> 170 inline G4std::vector<G4Track*>* G4ionIonisation::SecondariesAlongStep( >> 171 const G4Step& step, >> 172 G4double& tmax, >> 173 G4double& eloss, >> 174 G4double& kinEnergy) >> 175 { >> 176 G4std::vector<G4Track*>* newp = 0; >> 177 if(subCutoff) { >> 178 G4VSubCutoffProcessor* sp = SubCutoffProcessor(CurrentMaterialCutsCoupleIndex()); >> 179 if (sp) { >> 180 G4VEmModel* model = SelectModel(kinEnergy); >> 181 newp = sp->SampleSecondaries(step,tmax,eloss,model); >> 182 } >> 183 } >> 184 return newp; >> 185 } >> 186 >> 187 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... >> 188 >> 189 #include "G4VEmModel.hh" 118 190 119 inline G4double G4ionIonisation::BetheBlochEne << 191 inline void G4ionIonisation::SecondariesPostStep( >> 192 G4VEmModel* model, >> 193 const G4MaterialCutsCouple* couple, >> 194 const G4DynamicParticle* dp, >> 195 G4double& tcut, >> 196 G4double& kinEnergy) 120 { 197 { 121 return eth; << 198 G4DynamicParticle* delta = model->SampleSecondary(couple, dp, tcut, kinEnergy); >> 199 if(delta) { >> 200 aParticleChange.SetNumberOfSecondaries(1); >> 201 aParticleChange.AddSecondary(delta); >> 202 G4ThreeVector finalP = dp->GetMomentum(); >> 203 kinEnergy -= delta->GetKineticEnergy(); >> 204 finalP -= delta->GetMomentum(); >> 205 finalP = finalP.unit(); >> 206 aParticleChange.SetMomentumDirectionChange(finalP); >> 207 } 122 } 208 } 123 209 124 //....oooOO0OOooo........oooOO0OOooo........oo 210 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... 125 211 126 #endif 212 #endif 127 213