include/Geant4/G4PolarizedIonisationMollerXS.hh

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0025 //
0026 // Geant4 class file
0027 //
0028 // File name:     G4PolarizedIonisationMollerXS
0029 //
0030 // Author:        Andreas Schaelicke
0031 //
0032 // Class Description:
0033 //   * calculates the differential cross section
0034 //     incoming electron (along positive z direction) scatters at an electron at
0035 //     rest
0036 //   * phi denotes the angle between the scattering plane (defined by the
0037 //     outgoing electron) and X-axis
0038 //   * all stokes vectors refer to spins in the Global System (X,Y,Z)
0039
0040 #ifndef G4PolarizedIonisationMollerXS_h
0041 #define G4PolarizedIonisationMollerXS_h 1
0042
0043 #include "G4StokesVector.hh"
0044 #include "G4VPolarizedXS.hh"
0045
0046 class G4PolarizedIonisationMollerXS : public G4VPolarizedXS
0047 {
0048  public:
0049   G4PolarizedIonisationMollerXS();
0050   ~G4PolarizedIonisationMollerXS() override;
0051
0052   void Initialize(G4double x, G4double y, G4double phi,
0053                   const G4StokesVector& p0, const G4StokesVector& p1,
0054                   G4int flag = 0) override;
0055
0056   G4double XSection(const G4StokesVector& pol2,
0057                     const G4StokesVector& pol3) override;
0058
0059   G4double TotalXSection(G4double xmin, G4double xmax, G4double y,
0060                          const G4StokesVector& pol0,
0061                          const G4StokesVector& pol1) override;
0062
0063   // return expected mean polarisation
0064   G4StokesVector GetPol2() override;
0065   G4StokesVector GetPol3() override;
0066
0067   G4PolarizedIonisationMollerXS& operator                             =(
0068     const G4PolarizedIonisationMollerXS& right) = delete;
0069   G4PolarizedIonisationMollerXS(const G4PolarizedIonisationMollerXS&) = delete;
0070
0071  private:
0072   // - part depending on the polarization of the final photon
0073   G4ThreeVector fPhi2;
0074   // - part depending on the polarization of the final electron
0075   G4ThreeVector fPhi3;
0076
0077   G4double fPhi0;
0078 };
0079 #endif