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Geant4/processes/electromagnetic/standard/include/G4eplusTo3GammaOKVIModel.hh

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 25 //
 26 //
 27 // -------------------------------------------------------------------
 28 //
 29 // GEANT4 Class header file
 30 //
 31 //
 32 // File name:     G4eplusTo3GammaOKVIModel
 33 //
 34 // Authors:  Andrei Alkin, Vladimir Ivanchenko, Omrame Kadri
 35 //
 36 // Creation date: 29.03.2018
 37 //
 38 //
 39 // Class Description:
 40 //
 41 // Implementation of e+ annihilation into 3 gamma on fly
 42 //
 43 // V.N.Baier, V.S. Fadin, V.A. Khose, E.A. Kuraev,
 44 // Physics Reports 78 (1981) 293-393.
 45 // 
 46 // -------------------------------------------------------------------
 47 //
 48 
 49 #ifndef G4eplusTo3GammaOKVIModel_h
 50 #define G4eplusTo3GammaOKVIModel_h 1
 51 
 52 #include "G4VEmModel.hh"
 53 
 54 class G4ParticleChangeForGamma;
 55 
 56 class G4eplusTo3GammaOKVIModel : public G4VEmModel
 57 {
 58 
 59 public:
 60 
 61   explicit G4eplusTo3GammaOKVIModel(const G4ParticleDefinition* p = nullptr,
 62                                     const G4String& nam = "eplus3ggOKVI");
 63 
 64   ~G4eplusTo3GammaOKVIModel() override;
 65 
 66   void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
 67 
 68   G4double ComputeCrossSectionPerElectron(G4double kinEnergy);
 69   
 70   G4double ComputeCrossSectionPerAtom(
 71                                  const G4ParticleDefinition*,
 72                                        G4double kinEnergy, 
 73                                        G4double Z, 
 74                                        G4double A = 0., 
 75                                        G4double cutEnergy = 0.,
 76                                        G4double maxEnergy = DBL_MAX) final;
 77 
 78   G4double CrossSectionPerVolume(const G4Material*,
 79          const G4ParticleDefinition*,
 80          G4double kineticEnergy,
 81          G4double cutEnergy = 0.0,
 82          G4double maxEnergy = DBL_MAX) final;
 83 
 84   void SampleSecondaries(std::vector<G4DynamicParticle*>*,
 85          const G4MaterialCutsCouple*,
 86          const G4DynamicParticle*,
 87          G4double tmin = 0.0,
 88          G4double maxEnergy = DBL_MAX) final;
 89 
 90   G4double ComputeF(G4double fr1, G4double fr2, G4double fr3, G4double kinEnergy);
 91 
 92   G4double ComputeF0(G4double fr1, G4double fr2, G4double fr3);
 93 
 94   G4double ComputeFS(G4double fr1, G4double fr2, G4double fr3, G4double kinEnergy);
 95 
 96   inline void SetDelta(G4double val) { if(val > 0.0) { fDelta = val; } };
 97   
 98   // hide assignment operator
 99   G4eplusTo3GammaOKVIModel & operator=
100   (const  G4eplusTo3GammaOKVIModel &right) = delete;
101   G4eplusTo3GammaOKVIModel(const  G4eplusTo3GammaOKVIModel&) = delete;
102 
103 private:
104 
105   G4double fDelta;
106   const G4ParticleDefinition* theGamma;
107 };
108 
109 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
110 
111 
112 #endif
113