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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 header file 30 // 31 // 32 // File name: G4BetheBlochModel 33 // 34 // Author: Vladimir Ivanchenko on base 35 // 36 // Creation date: 03.01.2002 37 // 38 // Modifications: 39 // 40 // Modified by Michel Maire and Vladimir Ivanc 41 // 42 // Class Description: 43 // 44 // Implementation of Bethe-Bloch model of ener 45 // delta-electron production by heavy charged 46 47 // ------------------------------------------- 48 // 49 50 #ifndef G4BetheBlochModel_h 51 #define G4BetheBlochModel_h 1 52 53 #include "G4VEmModel.hh" 54 55 class G4EmCorrections; 56 class G4ParticleChangeForLoss; 57 class G4ICRU90StoppingData; 58 class G4NistManager; 59 60 class G4BetheBlochModel : public G4VEmModel 61 { 62 63 public: 64 65 explicit G4BetheBlochModel(const G4ParticleD 66 const G4String& nam = "BetheBloch") 67 68 ~G4BetheBlochModel() override; 69 70 void Initialise(const G4ParticleDefinition*, 71 72 G4double MinEnergyCut(const G4ParticleDefini 73 const G4MaterialCutsCouple* couple) over 74 75 virtual G4double ComputeCrossSectionPerElect 76 const G4ParticleDefinition*, 77 G4double kineticEnergy, 78 G4double cutEnergy, 79 G4double maxEnergy); 80 81 G4double ComputeCrossSectionPerAtom( 82 const G4ParticleDefinition*, 83 G4double kineticEnergy, 84 G4double Z, G4double A, 85 G4double cutEnergy, 86 G4double maxEnergy) override; 87 88 G4double CrossSectionPerVolume(const G4Mater 89 const G4ParticleDefinition*, 90 G4double kineticEnergy, 91 G4double cutEnergy, 92 G4double maxEnergy) override; 93 94 G4double ComputeDEDXPerVolume(const G4Materi 95 const G4ParticleDefinition*, 96 G4double kineticEnergy, 97 G4double cutEnergy) override; 98 99 G4double GetChargeSquareRatio(const G4Partic 100 const G4Material* mat, 101 G4double kineticEnergy) override; 102 103 G4double GetParticleCharge(const G4ParticleD 104 const G4Material* mat, 105 G4double kineticEnergy) override; 106 107 void CorrectionsAlongStep(const G4MaterialCu 108 const G4DynamicParticle* dp, 109 const G4double& length, 110 G4double& eloss) override; 111 112 void SampleSecondaries(std::vector<G4Dynamic 113 const G4MaterialCutsCouple*, 114 const G4DynamicParticle*, 115 G4double tmin, 116 G4double maxEnergy) override; 117 118 // hide assignment operator 119 G4BetheBlochModel & operator=(const G4BetheB 120 G4BetheBlochModel(const G4BetheBlochModel&) 121 122 protected: 123 124 G4double MaxSecondaryEnergy(const G4Particle 125 G4double kinEnergy) override; 126 127 inline G4double GetChargeSquareRatio() const 128 129 inline void SetChargeSquareRatio(G4double va 130 131 private: 132 133 void SetupParameters(const G4ParticleDefinit 134 135 const G4ParticleDefinition* particle = nullp 136 const G4ParticleDefinition* theElectron; 137 G4EmCorrections* corr; 138 G4ParticleChangeForLoss* fParticleChange 139 G4NistManager* nist; 140 G4ICRU90StoppingData* fICRU90 = nullpt 141 const G4Material* currentMaterial 142 const G4Material* baseMaterial = n 143 144 G4double mass = 0.0; 145 G4double tlimit = DBL_MAX; 146 G4double spin = 0.0; 147 G4double magMoment2 = 0.0; 148 G4double chargeSquare = 1.0; 149 G4double ratio = 1.0; 150 G4double formfact = 0.0; 151 G4double twoln10; 152 G4double fAlphaTlimit; 153 G4double fProtonTlimit; 154 155 G4int iICRU90 = -1; 156 G4bool isIon = false; 157 G4bool isAlpha = false; 158 }; 159 160 //....oooOO0OOooo........oooOO0OOooo........oo 161 162 inline G4double G4BetheBlochModel::GetChargeSq 163 { 164 return chargeSquare; 165 } 166 167 //....oooOO0OOooo........oooOO0OOooo........oo 168 169 inline void G4BetheBlochModel::SetChargeSquare 170 { 171 chargeSquare = val; 172 } 173 174 //....oooOO0OOooo........oooOO0OOooo........oo 175 176 #endif 177