G4LivermorePolarizedComptonModel.hh

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// $Id$
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// Authors: G.Depaola & F.Longo
//

#ifndef G4LivermorePolarizedComptonModel_h
#define G4LivermorePolarizedComptonModel_h 1

#include "G4VEmModel.hh"
#include "G4Electron.hh"
#include "G4ParticleChangeForGamma.hh"
#include "G4CrossSectionHandler.hh"
#include "G4LogLogInterpolation.hh"
#include "G4CompositeEMDataSet.hh"
#include "G4ShellData.hh"
#include "G4DopplerProfile.hh"
#include "G4ForceCondition.hh"
#include "G4Gamma.hh"

class G4LivermorePolarizedComptonModel : public G4VEmModel
{

public:

  G4LivermorePolarizedComptonModel(const G4ParticleDefinition* p = 0, 
                           const G4String& nam = "LivermorePolarizedCompton");

  virtual ~G4LivermorePolarizedComptonModel();

  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:

  G4double lowEnergyLimit;  
  G4double highEnergyLimit; 
  G4bool isInitialised;
  G4int verboseLevel;

  G4VEMDataSet* meanFreePathTable;
  G4VEMDataSet* scatterFunctionData;
  G4VCrossSectionHandler* crossSectionHandler;

  // specific methods for polarization 
  
  G4ThreeVector GetRandomPolarization(G4ThreeVector& direction0); // Random Polarization
  G4ThreeVector GetPerpendicularPolarization(const G4ThreeVector& direction0, const G4ThreeVector& polarization0) const;
  
  G4ThreeVector SetPerpendicularVector(G4ThreeVector& a); // temporary
  G4ThreeVector SetNewPolarization(G4double epsilon, G4double sinSqrTheta, 
                   G4double phi, G4double cosTheta);
  G4double SetPhi(G4double, G4double);
  
  void SystemOfRefChange(G4ThreeVector& direction0, G4ThreeVector& direction1, 
             G4ThreeVector& polarization0, G4ThreeVector& polarization1);
  
  // Doppler Broadening
 
  G4ShellData shellData;
  G4DopplerProfile profileData;

  G4LivermorePolarizedComptonModel & operator=(const  G4LivermorePolarizedComptonModel &right);
  G4LivermorePolarizedComptonModel(const  G4LivermorePolarizedComptonModel&);

};

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#endif