include/Geant4/G4eplusTo2GammaOKVIModel.hh

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0025 //
0026 //
0027 // -------------------------------------------------------------------
0028 //
0029 // GEANT4 Class header file
0030 //
0031 //
0032 // File name:     G4eplusTo2GammaOKVIModel
0033 //
0034 // Author:        Vladimir Ivanchenko and Omrane Kadri
0035 //
0036 // Creation date: 29.03.2018
0037 //
0038 //
0039 // Class Description:
0040 //
0041 // Implementation of e+ annihilation into 2 gamma
0042
0043 // -------------------------------------------------------------------
0044 //
0045
0046 #ifndef G4eplusTo2GammaOKVIModel_h
0047 #define G4eplusTo2GammaOKVIModel_h 1
0048
0049 #include "G4VEmModel.hh"
0050
0051 class G4eplusTo3GammaOKVIModel;
0052 class G4ParticleChangeForGamma;
0053 class G4PhysicsVector;
0054 class G4DataVector;
0055
0056 class G4eplusTo2GammaOKVIModel : public G4VEmModel
0057 {
0058
0059 public:
0060
0061   explicit G4eplusTo2GammaOKVIModel(const G4ParticleDefinition* p = nullptr,
0062                                     const G4String& nam = "eplus2ggOKVI");
0063
0064   ~G4eplusTo2GammaOKVIModel() override;
0065
0066   void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
0067
0068   G4double ComputeCrossSectionPerElectron(G4double kinEnergy);
0069
0070   G4double ComputeCrossSectionPerAtom(
0071                                  const G4ParticleDefinition*,
0072                                  G4double kinEnergy,
0073                                  G4double Z,
0074                                  G4double A = 0.,
0075                                  G4double cutEnergy = 0.,
0076                                  G4double maxEnergy = DBL_MAX) final;
0077
0078   G4double CrossSectionPerVolume(const G4Material*,
0079                  const G4ParticleDefinition*,
0080                  G4double kineticEnergy,
0081                  G4double cutEnergy = 0.0,
0082                  G4double maxEnergy = DBL_MAX) final;
0083
0084   void SampleSecondaries(std::vector<G4DynamicParticle*>*,
0085                  const G4MaterialCutsCouple*,
0086                  const G4DynamicParticle*,
0087                  G4double tmin = 0.0,
0088                  G4double maxEnergy = DBL_MAX) final;
0089
0090   inline void SetDelta(G4double val) { if(val > 0.0) { fDelta = val; } };
0091
0092   // hide assignment operator
0093   G4eplusTo2GammaOKVIModel & operator=
0094   (const  G4eplusTo2GammaOKVIModel &right) = delete;
0095   G4eplusTo2GammaOKVIModel(const  G4eplusTo2GammaOKVIModel&) = delete;
0096
0097 private:
0098
0099   const G4ParticleDefinition* theGamma;
0100
0101   G4ParticleChangeForGamma* fParticleChange;
0102   G4eplusTo3GammaOKVIModel* f3GModel;
0103   const G4DataVector*       fCuts;
0104
0105   G4double fDelta;
0106   G4double fGammaTh;
0107
0108   static G4PhysicsVector* fCrossSection;
0109   static G4PhysicsVector* fCrossSection3G;
0110   static G4PhysicsVector* f3GProbability;
0111 };
0112
0113 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0114
0115 #endif