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G4VPolarizedCrossSection.hh
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25 //
26 //
27 // File name: G4VPolarizedCrossSection
28 //
29 // Author: Andreas Schaelicke
30 //
31 // Creation date: 15.05.2005
32 //
33 // Modifications:
34 //
35 // Class Description:
36 // (pure virtual) interface class
37 //
38 // provides readable but efficient routines to determine
39 // polarization for the final state of a given process
40 // empoying the differential cross section
41 //
42 
43 #ifndef G4VPolarizedCrossSection_h
44 #define G4VPolarizedCrossSection_h 1
45 
46 #include "G4StokesVector.hh"
47 
48 
50 {
51 public:
53  virtual ~G4VPolarizedCrossSection();
54 
55 public:
56  virtual void Initialize(G4double, G4double, G4double,
57  const G4StokesVector & p0,const G4StokesVector & p1,
58  G4int flag=0);
59  virtual G4double XSection(const G4StokesVector & pol2,const G4StokesVector & pol3) = 0;
61  const G4StokesVector & pol0,
62  const G4StokesVector & pol1);
63 
64  // return expected mean polarisation
65  virtual G4StokesVector GetPol2();
66  virtual G4StokesVector GetPol3();
67 
68  // return basic kinematics properties
69  // minimal gamma value in TotalXSection
70  inline G4double GetYmin() {return fYmin; }
71  // minimal energy fraction in TotalXSection
72  virtual G4double GetXmin(G4double y);
73  // maximal energy fraction in TotalXSection
74  virtual G4double GetXmax(G4double y);
75 
76  // return appropriate distribute polarisation states;
77 // void DicePolarization();
78 // G4StokesVector DicedPol2();
79 // G4StokesVector DicedPol3();
80  inline void SetMaterial(G4double A, G4double Z, G4double coul)
81  { theA=A; theZ=Z; fCoul=coul; }
82 protected:
83  // define kinematics properties
84  inline void SetXmin(G4double xmin) { fXmin=xmin;}
85  inline void SetXmax(G4double xmax) { fXmax=xmax;}
86  inline void SetYmin(G4double ymin) { fYmin=ymin;}
87 
88  // kinematic properties
90  // material properties
93 };
94 
95 
96 #endif