include/Geant4/G4ModifiedTsai.hh

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0025 //
0026 //
0027 // -------------------------------------------------------------------
0028 //
0029 // GEANT4 Class header file
0030 //
0031 //
0032 // File name:  G4ModifiedTsai
0033 //
0034 // Author:     Andreia Trindade (andreia@lip.pt)
0035 //             Pedro Rodrigues  (psilva@lip.pt)
0036 //             Luis Peralta     (luis@lip.pt)
0037 //
0038 // Creation date: 21 March 2003
0039 //
0040 // Modifications:
0041 // 21 Mar 2003 A.Trindade First implementation acording with new design
0042 // 24 Mar 2003 A.Trindade Fix in Tsai generator in order to prevent theta
0043 //                        generation above pi
0044 // 13 Oct 2010  V.Ivanchenko  Moved to standard and improved comment
0045 //
0046 // Class Description:
0047 //
0048 // Bremsstrahlung Angular Distribution Generation
0049 // suggested by L.Urban (Geant3 manual (1993) Phys211)
0050 // Derived from Tsai distribution (Rev Mod Phys 49,421(1977))
0051 //
0052 // -------------------------------------------------------------------
0053 //
0054
0055 #ifndef G4ModifiedTsai_h
0056 #define G4ModifiedTsai_h 1
0057
0058 #include "G4ios.hh"
0059 #include "globals.hh"
0060 #include "G4VEmAngularDistribution.hh"
0061
0062 class G4ModifiedTsai : public G4VEmAngularDistribution
0063 {
0064
0065 public:
0066
0067   explicit G4ModifiedTsai(const G4String& name = "");
0068
0069   ~G4ModifiedTsai() override;
0070
0071   G4ThreeVector& SampleDirection(const G4DynamicParticle* dp,
0072                  G4double out_energy, G4int Z,
0073                  const G4Material* mat = nullptr) final;
0074
0075   void SamplePairDirections(const G4DynamicParticle* dp,
0076                 G4double elecKinEnergy,
0077                 G4double posiKinEnergy,
0078                 G4ThreeVector& dirElectron,
0079                 G4ThreeVector& dirPositron,
0080                 G4int Z = 0,
0081                 const G4Material* mat = nullptr) final;
0082
0083   void PrintGeneratorInformation() const final;
0084
0085   // hide assignment operator
0086   G4ModifiedTsai & operator=(const  G4ModifiedTsai &right) = delete;
0087   G4ModifiedTsai(const  G4ModifiedTsai&) = delete;
0088
0089 private:
0090
0091   G4double SampleCosTheta(G4double kinEnergy);
0092
0093 };
0094
0095 #endif
0096