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//
// Geant4 Class file
//
// File name:     G4PolarizedGammaConversionXS
//
// Author:        Karim Laihem

#ifndef G4PolarizedGammaConversionXS_h
#define G4PolarizedGammaConversionXS_h 1

#include "G4StokesVector.hh"
#include "G4VPolarizedXS.hh"

class G4PolarizedGammaConversionXS : public G4VPolarizedXS
{
 public:
  G4PolarizedGammaConversionXS();
  ~G4PolarizedGammaConversionXS() override;

  void Initialize(G4double eps, G4double X, G4double phi,
                  const G4StokesVector& p0, const G4StokesVector& p1,
                  G4int flag = 0) override;

  G4double XSection(const G4StokesVector& pol2,
                    const G4StokesVector& pol3) override;

  // return expected mean polarisation
  G4StokesVector GetPol2() override;  // electron/positron
  G4StokesVector GetPol3() override;  // photon

  G4PolarizedGammaConversionXS& operator                            =(
    const G4PolarizedGammaConversionXS& right) = delete;
  G4PolarizedGammaConversionXS(const G4PolarizedGammaConversionXS&) = delete;

 private:
  static G4double SCRN[2][19];  // screening function lookup table

  G4StokesVector fFinalElectronPolarization;
  G4StokesVector fFinalPositronPolarization;
};

#endif