G4LivermorePolarizedRayleighModel.hh

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// Author: Sebastien Incerti
//         30 October 2008
//         on base of G4LowEnergyPolarizedRayleigh developed by R. Capra
//
 
#ifndef G4LivermorePolarizedRayleighModel_h
#define G4LivermorePolarizedRayleighModel_h 1
 
#include "G4VEmModel.hh"
#include "G4ParticleChangeForGamma.hh"
#include "G4LPhysicsFreeVector.hh"
#include "G4ProductionCutsTable.hh"
 
//#include "G4CrossSectionHandler.hh"
//#include "G4LogLogInterpolation.hh"
//#include "G4CompositeEMDataSet.hh"
 
#include "G4VEMDataSet.hh"
#include "G4CompositeEMDataSet.hh"
 
 
 
class G4LivermorePolarizedRayleighModel : public G4VEmModel
{
 
public:
 
  G4LivermorePolarizedRayleighModel(const G4ParticleDefinition* p = 0, 
             const G4String& nam = "LivermorePolarizedRayleigh");
 
  virtual ~G4LivermorePolarizedRayleighModel();
 
  virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
 
  virtual void InitialiseLocal(const G4ParticleDefinition*, 
                   G4VEmModel* masterModel);
  
  virtual void InitialiseForElement(const G4ParticleDefinition*, G4int Z);
  
  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);
 
private:
 
  G4ParticleChangeForGamma* fParticleChange;
  G4int verboseLevel;
  G4bool isInitialised;
 
  G4double lowEnergyLimit;  
  //G4double highEnergyLimit; 
  
  G4LivermorePolarizedRayleighModel & operator=(const  G4LivermorePolarizedRayleighModel &right);
  G4LivermorePolarizedRayleighModel(const  G4LivermorePolarizedRayleighModel&);
 
  // cross section 
 
  void ReadData(size_t Z, const char* path = 0);
  
  static G4VEMDataSet* formFactorData;
  static G4int maxZ;
  static G4LPhysicsFreeVector* dataCS[101];
 
  // Polarization 
  
  //   Generates \f$cos \left ( \theta\right )\f$ of the scattered photon
  //   incomingPhotonEnergy The energy of the incoming photon
  //   zAtom Atomic number
  //   \f$cos \left ( \theta\right )\f$
  G4double GenerateCosTheta(G4double incomingPhotonEnergy, G4int zAtom) const;
   
  //   Generates \f$\phi\f$ of the scattered photon
  //   cosTheta \f$cos \left ( \theta\right )\f$ of the scattered photon
  //    \f$\phi\f$
  G4double GeneratePhi(G4double cosTheta) const;
 
  //   Generates the polarization direction \f$\beta\f$ in the plane x, y relative to the x direction
  //   \f$\beta\f$
  G4double GeneratePolarizationAngle(void) const;
 
  G4ThreeVector GetPhotonPolarization(const G4DynamicParticle&  photon);
 
 
};
 
 
#endif