include/Geant4/G4DipBustGenerator.hh

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0025 //
0026 //
0027 // -------------------------------------------------------------------
0028 //
0029 // GEANT4 Class header file
0030 //
0031 //
0032 // File name:  G4DipBustGenerator
0033 //
0034 // Author: Vladimir Grichine
0035 // Creation date: 17 May 2011
0036 //
0037 // Modifications:
0038 //
0039 //
0040 // Bremsstrahlung Angular Distribution Generation
0041 // suggested the dipole approximation in the rest frame of electron
0042 // busted in the laboratory frame.
0043 //
0044 // -------------------------------------------------------------------
0045 //
0046
0047 #ifndef G4DipBustGenerator_h
0048 #define G4DipBustGenerator_h 1
0049
0050 #include "G4ios.hh"
0051 #include "globals.hh"
0052 #include "G4VEmAngularDistribution.hh"
0053
0054 class G4DipBustGenerator : public G4VEmAngularDistribution
0055 {
0056
0057 public:
0058
0059   explicit G4DipBustGenerator(const G4String& name = "");
0060
0061   ~G4DipBustGenerator() override;
0062
0063   G4ThreeVector& SampleDirection(const G4DynamicParticle* dp,
0064                  G4double out_energy, G4int Z,
0065                  const G4Material* mat = nullptr) final;
0066
0067   void SamplePairDirections(const G4DynamicParticle* dp,
0068                 G4double elecKinEnergy,
0069                 G4double posiKinEnergy,
0070                 G4ThreeVector& dirElectron,
0071                 G4ThreeVector& dirPositron,
0072                 G4int Z = 0,
0073                 const G4Material* mat = nullptr) final;
0074
0075   G4double PolarAngle(G4double initial_energy,
0076               G4double final_energy,
0077               G4int Z);
0078
0079   void PrintGeneratorInformation() const final;
0080
0081   // hide assignment operator
0082   G4DipBustGenerator & operator=(const  G4DipBustGenerator &right) = delete;
0083   G4DipBustGenerator(const  G4DipBustGenerator&) = delete;
0084
0085 private:
0086
0087   G4double SampleCosTheta(G4double kinEnergy);
0088
0089 };
0090
0091 #endif
0092