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// $Id: G4LivermoreRayleighModel.hh,v 1.3 2009/04/17 10:29:20 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-03 $
//

#ifndef G4LivermoreRayleighModel_h
#define G4LivermoreRayleighModel_h 1

#include "G4VEmModel.hh"
#include "G4ParticleChangeForGamma.hh"
#include "G4CrossSectionHandler.hh"
#include "G4LogLogInterpolation.hh"
#include "G4CompositeEMDataSet.hh"
#include "G4ForceCondition.hh"
#include "G4Gamma.hh"

class G4LivermoreRayleighModel : public G4VEmModel
{

public:

  G4LivermoreRayleighModel(const G4ParticleDefinition* p = 0, 
		     const G4String& nam = "LivermoreRayleigh");

  virtual ~G4LivermoreRayleighModel();

  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;

private:

  G4double lowEnergyLimit;  
  G4double highEnergyLimit; 

  G4int verboseLevel;
  G4bool isInitialised;

  G4VEMDataSet* meanFreePathTable;
  G4VEMDataSet* formFactorData;
  G4VCrossSectionHandler* crossSectionHandler;

  G4LivermoreRayleighModel & operator=(const  G4LivermoreRayleighModel &right);
  G4LivermoreRayleighModel(const  G4LivermoreRayleighModel&);

};

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#endif
