G4DipBustGenerator.hh

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//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:  G4DipBustGenerator
//
// Author: Vladimir Grichine
// Creation date: 17 May 2011
//
// Modifications:
//
//
// Bremsstrahlung Angular Distribution Generation
// suggested the dipole approximation in the rest frame of electron
// busted in the laboratory frame.
//
// -------------------------------------------------------------------
//
 
#ifndef G4DipBustGenerator_h
#define G4DipBustGenerator_h 1
 
#include "G4ios.hh"
#include "globals.hh"
#include "G4VEmAngularDistribution.hh"
 
class G4DipBustGenerator : public G4VEmAngularDistribution
{
 
public:
 
  explicit G4DipBustGenerator(const G4String& name = "");
 
  ~G4DipBustGenerator() override;
 
  G4ThreeVector& SampleDirection(const G4DynamicParticle* dp,
                 G4double out_energy, G4int Z,
                 const G4Material* mat = nullptr) final;
 
  void SamplePairDirections(const G4DynamicParticle* dp,
                G4double elecKinEnergy,
                G4double posiKinEnergy,
                G4ThreeVector& dirElectron,
                G4ThreeVector& dirPositron,
                G4int Z = 0,
                const G4Material* mat = nullptr) final;
 
  G4double PolarAngle(G4double initial_energy,
              G4double final_energy,
              G4int Z);
 
  void PrintGeneratorInformation() const final;
 
  // hide assignment operator
  G4DipBustGenerator & operator=(const  G4DipBustGenerator &right) = delete;
  G4DipBustGenerator(const  G4DipBustGenerator&) = delete;
 
private:
 
  G4double SampleCosTheta(G4double kinEnergy);
 
};
 
#endif