include/Geant4/G4eplusTo3GammaOKVIModel.hh

0001 //
0002 // ********************************************************************
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0025 //
0026 //
0027 // -------------------------------------------------------------------
0028 //
0029 // GEANT4 Class header file
0030 //
0031 //
0032 // File name:     G4eplusTo3GammaOKVIModel
0033 //
0034 // Authors:  Andrei Alkin, Vladimir Ivanchenko, Omrame Kadri
0035 //
0036 // Creation date: 29.03.2018
0037 //
0038 //
0039 // Class Description:
0040 //
0041 // Implementation of e+ annihilation into 3 gamma on fly
0042 //
0043 // V.N.Baier, V.S. Fadin, V.A. Khose, E.A. Kuraev,
0044 // Physics Reports 78 (1981) 293-393.
0045 //
0046 // -------------------------------------------------------------------
0047 //
0048
0049 #ifndef G4eplusTo3GammaOKVIModel_h
0050 #define G4eplusTo3GammaOKVIModel_h 1
0051
0052 #include "G4VEmModel.hh"
0053
0054 class G4ParticleChangeForGamma;
0055
0056 class G4eplusTo3GammaOKVIModel : public G4VEmModel
0057 {
0058
0059 public:
0060
0061   explicit G4eplusTo3GammaOKVIModel(const G4ParticleDefinition* p = nullptr,
0062                                     const G4String& nam = "eplus3ggOKVI");
0063
0064   ~G4eplusTo3GammaOKVIModel() 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   G4double ComputeF(G4double fr1, G4double fr2, G4double fr3, G4double kinEnergy);
0091
0092   G4double ComputeF0(G4double fr1, G4double fr2, G4double fr3);
0093
0094   G4double ComputeFS(G4double fr1, G4double fr2, G4double fr3, G4double kinEnergy);
0095
0096   inline void SetDelta(G4double val) { if(val > 0.0) { fDelta = val; } };
0097
0098   // hide assignment operator
0099   G4eplusTo3GammaOKVIModel & operator=
0100   (const  G4eplusTo3GammaOKVIModel &right) = delete;
0101   G4eplusTo3GammaOKVIModel(const  G4eplusTo3GammaOKVIModel&) = delete;
0102
0103 private:
0104
0105   G4double fDelta;
0106   const G4ParticleDefinition* theGamma;
0107 };
0108
0109 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0110
0111
0112 #endif