G4KleinNishinaModel.hh

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// $Id$
//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:     G4KleinNishinaModel
//
// Author:        Vladimir Ivanchenko on base of G4KleinNishinaCompton
//
// Creation date: 13.06.2010
//
// Modifications:
//
// Class Description:
//
// Implementation of gamma Compton scattering with atomic effects 
// 

// -------------------------------------------------------------------
//

#ifndef G4KleinNishinaModel_h
#define G4KleinNishinaModel_h 1

#include "G4VEmModel.hh"
#include "G4LorentzVector.hh"
#include <vector>

class G4ParticleChangeForGamma;
class G4VAtomDeexcitation;

class G4KleinNishinaModel : public G4VEmModel
{

public:

  G4KleinNishinaModel(const G4String& nam = "KleinNishina");

  virtual ~G4KleinNishinaModel();

  virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);

  virtual G4double ComputeCrossSectionPerAtom(
                                const G4ParticleDefinition*,
                                      G4double kinEnergy, 
                                      G4double Z, 
                                      G4double A, 
                                      G4double cut,
                                      G4double emax);

  virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
                 const G4MaterialCutsCouple*,
                 const G4DynamicParticle*,
                 G4double tmin,
                 G4double maxEnergy);

protected:

  G4ParticleDefinition*     theGamma;
  G4ParticleDefinition*     theElectron;
  G4ParticleChangeForGamma* fParticleChange;
  G4double                  lowestGammaEnergy;

private:

  // hide assignment operator
  G4KleinNishinaModel & operator=(const  G4KleinNishinaModel &right);
  G4KleinNishinaModel(const  G4KleinNishinaModel&);
 
  G4LorentzVector lv1, lv2;
  G4ThreeVector bst;

  G4VAtomDeexcitation*      fAtomDeexcitation;
  G4double                  limitFactor;
  std::vector<G4double>     fProbabilities;
};

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#endif