include/Geant4/G4PolarizedAnnihilation.hh

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0025 //
0026 // -------------------------------------------------------------------
0027 //
0028 // Geant4 Class header file
0029 //
0030 // File name:     G4PolarizedAnnihilation
0031 //
0032 // Author:   A. Schaelicke on base of Vladimir Ivanchenko / Michel Maire code
0033 //
0034 // Class Description:
0035 //  Polarized process of e+ annihilation into 2 gammas
0036 //
0037 // -------------------------------------------------------------------
0038
0039 #ifndef G4PolarizedAnnihilation_h
0040 #define G4PolarizedAnnihilation_h 1
0041
0042 #include "globals.hh"
0043 #include "G4eplusAnnihilation.hh"
0044
0045 class G4PolarizedAnnihilationModel;
0046
0047 class G4PolarizedAnnihilation : public G4eplusAnnihilation
0048 {
0049  public:
0050   explicit G4PolarizedAnnihilation(const G4String& name = "pol-annihil");
0051
0052   virtual ~G4PolarizedAnnihilation() override;
0053
0054   virtual void ProcessDescription(std::ostream&) const override;
0055   virtual void DumpInfo() const override { ProcessDescription(G4cout); };
0056
0057   virtual G4double GetMeanFreePath(const G4Track& track,
0058                                    G4double previousStepSize,
0059                                    G4ForceCondition* condition) override;
0060
0061   virtual G4double PostStepGetPhysicalInteractionLength(
0062     const G4Track& track, G4double previousStepSize,
0063     G4ForceCondition* condition) override;
0064
0065   virtual void BuildPhysicsTable(const G4ParticleDefinition&) override;
0066
0067   G4PolarizedAnnihilation& operator=(const G4PolarizedAnnihilation& right) =
0068     delete;
0069   G4PolarizedAnnihilation(const G4PolarizedAnnihilation&) = delete;
0070
0071  private:
0072   void CleanTables();
0073
0074   void BuildAsymmetryTables(const G4ParticleDefinition& part);
0075
0076   G4double ComputeAsymmetry(G4double energy, const G4MaterialCutsCouple* couple,
0077                             const G4ParticleDefinition& particle, G4double cut,
0078                             G4double& tasm);
0079
0080   G4double ComputeSaturationFactor(const G4Track& aTrack);
0081
0082   G4PolarizedAnnihilationModel* fEmModel;
0083
0084   // table for cross section asymmetry
0085   G4PhysicsTable* fAsymmetryTable;
0086   // table for transverse cross section asymmetry
0087   G4PhysicsTable* fTransverseAsymmetryTable;
0088 };
0089
0090 #endif