include/Geant4/G4VPolarizedXS.hh

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0025 //
0026 // File name:     G4VPolarizedXS
0027 //
0028 // Author:        Andreas Schaelicke
0029 //
0030 // Class Description:
0031 //   (virtual) interface class
0032 //
0033 //   provides readable but efficient routines to determine
0034 //   polarization for the final state of a given process
0035 //   empoying the differential cross section
0036
0037 #ifndef G4VPolarizedXS_h
0038 #define G4VPolarizedXS_h 1
0039
0040 #include "G4StokesVector.hh"
0041
0042 class G4VPolarizedXS
0043 {
0044  public:
0045   G4VPolarizedXS();
0046   virtual ~G4VPolarizedXS();
0047
0048   virtual void Initialize(G4double, G4double, G4double,
0049                           const G4StokesVector& p0, const G4StokesVector& p1,
0050                           G4int flag = 0) = 0;
0051
0052   virtual G4double XSection(const G4StokesVector& pol2,
0053                             const G4StokesVector& pol3) = 0;
0054
0055   virtual G4double TotalXSection(G4double xmin, G4double xmax, G4double y,
0056                                  const G4StokesVector& pol0,
0057                                  const G4StokesVector& pol1);
0058
0059   // return expected mean polarisation
0060   virtual G4StokesVector GetPol2();
0061   virtual G4StokesVector GetPol3();
0062
0063   // return basic kinematics properties
0064   //   minimal gamma value in TotalXSection
0065   inline G4double GetYmin() { return fYmin; }
0066   //   minimal energy fraction in TotalXSection
0067   virtual G4double GetXmin(G4double y);
0068   //   maximal energy fraction in TotalXSection
0069   virtual G4double GetXmax(G4double y);
0070
0071   inline void SetMaterial(G4double A, G4double Z, G4double coul)
0072   {
0073     fA    = A;
0074     fZ    = Z;
0075     fCoul = coul;
0076   }
0077
0078   G4VPolarizedXS& operator=(const G4VPolarizedXS& right) = delete;
0079   G4VPolarizedXS(const G4VPolarizedXS&)                  = delete;
0080
0081  protected:
0082   // define kinematics properties
0083   inline void SetXmin(G4double xmin) { fXmin = xmin; }
0084   inline void SetXmax(G4double xmax) { fXmax = xmax; }
0085   inline void SetYmin(G4double ymin) { fYmin = ymin; }
0086
0087   // kinematic properties
0088   G4double fXmin, fXmax, fYmin;
0089   // material properties
0090   G4double fA, fZ;
0091   G4double fCoul;
0092 };
0093
0094 #endif