G4LivermoreNuclearGammaConversionModel.hh

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// $Id$
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// Authors: G.Depaola & F.Longo
//
 
#ifndef G4LivermoreNuclearGammaConversionModel_h
#define G4LivermoreNuclearGammaConversionModel_h 1
 
#include "G4VEmModel.hh"
#include "G4Electron.hh"
#include "G4Positron.hh"
#include "G4ParticleChangeForGamma.hh"
#include "G4CrossSectionHandler.hh"
#include "G4ForceCondition.hh"
#include "G4CompositeEMDataSet.hh"
#include "G4Gamma.hh"
 
class G4LivermoreNuclearGammaConversionModel : public G4VEmModel
{
 
public:
 
  G4LivermoreNuclearGammaConversionModel(const G4ParticleDefinition* p = 0, 
             const G4String& nam = "LivermoreNuclearGammaConversion");
 
  virtual ~G4LivermoreNuclearGammaConversionModel();
 
  virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
 
  virtual G4double ComputeCrossSectionPerAtom(
                                const G4ParticleDefinition*,
                                      G4double kinEnergy, 
                                      G4double Z, 
                                      G4double A=0, 
                                      G4double cut=0,
                                      G4double emax=DBL_MAX);
 
  virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
                 const G4MaterialCutsCouple*,
                 const G4DynamicParticle*,
                 G4double tmin,
                 G4double maxEnergy);
 
protected:
 
  G4ParticleChangeForGamma* fParticleChange;
 
  G4double GetMeanFreePath(const G4Track& aTrack, 
               G4double previousStepSize, 
               G4ForceCondition* condition);
private:
 
  const G4double smallEnergy;
  G4double lowEnergyLimit;  
  G4double highEnergyLimit;
 
  G4int verboseLevel;
  G4bool isInitialised;
  
  G4double ScreenFunction1(G4double screenVariable);
  G4double ScreenFunction2(G4double screenVariable);
  G4VCrossSectionHandler* crossSectionHandler;
  G4VEMDataSet* meanFreePathTable;
 
  G4LivermoreNuclearGammaConversionModel & operator=(const  G4LivermoreNuclearGammaConversionModel &right);
  G4LivermoreNuclearGammaConversionModel(const  G4LivermoreNuclearGammaConversionModel&);
 
 
};
 
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#endif