G4XrayRayleighModel.hh

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//
// author: Vladimir Grichine
//
// 14.10.12 V. Grichine, fFormFactor was added as the class member
// 25.05.2011 first implementation
//
// X ray Rayleigh scattering model based on simplified form-factors 
// and angular distribution
//

#ifndef G4XrayRayleighModel_h
#define G4XrayRayleighModel_h 1

#include "G4VEmModel.hh"
#include "G4ParticleChangeForGamma.hh"
#include "G4Gamma.hh"

class G4XrayRayleighModel : public G4VEmModel
{

public:

  explicit G4XrayRayleighModel(const G4ParticleDefinition* p = 0, 
             const G4String& nam = "XrayRayleigh");

  virtual ~G4XrayRayleighModel();

  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; 
  G4double fFormFactor; 

  G4int verboseLevel;
  G4bool isInitialised;

  static const G4double fCofA;
  static const G4double fCofR;

  G4XrayRayleighModel & operator=(const  G4XrayRayleighModel &right);
  G4XrayRayleighModel(const  G4XrayRayleighModel&);

};

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#endif