| Geant4 Cross Reference |
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26 // -------------------------------------------
27 //
28 // Geant4 Class file
29 //
30 // File name: G4PolarizedAnnihilationXS
31 //
32 // Author: Andreas Schaelicke and Pavel
33 //
34 // Class Description:
35 // * calculates the differential cross secti
36 // without phase space) incoming positron
37 // annihilations with an electron at rest
38 // * phi denotes the angle between the scatt
39 // X axis of incoming partice reference fr
40
41 #ifndef G4PolarizedAnnihilationXS_h
42 #define G4PolarizedAnnihilationXS_h 1
43
44 #include "G4StokesVector.hh"
45 #include "G4VPolarizedXS.hh"
46
47 class G4PolarizedAnnihilationXS : public G4VPo
48 {
49 public:
50 G4PolarizedAnnihilationXS();
51 virtual ~G4PolarizedAnnihilationXS() overrid
52
53 virtual void Initialize(G4double eps, G4doub
54 const G4StokesVector
55 G4int flag = 0) over
56
57 G4double DiceEpsilon();
58
59 virtual G4double XSection(const G4StokesVect
60 const G4StokesVect
61
62 virtual G4double TotalXSection(G4double xmin
63 const G4Stoke
64 const G4Stoke
65
66 // return expected mean polarisation
67 virtual G4StokesVector GetPol2() override;
68 virtual G4StokesVector GetPol3() override;
69
70 // minimal energy fraction in TotalXSection
71 virtual G4double GetXmin(G4double y) overrid
72 // maximal energy fraction in TotalXSection
73 virtual G4double GetXmax(G4double y) overrid
74
75 G4double getVar(G4int);
76 // test routine
77 void getCoeff();
78
79 G4PolarizedAnnihilationXS& operator=(const G
80 delete;
81 G4PolarizedAnnihilationXS(const G4PolarizedA
82
83 private:
84 void TotalXS();
85 void DefineCoefficients(const G4StokesVector
86 const G4StokesVector
87
88 static constexpr G4double re2 =
89 CLHEP::classic_electr_radius * CLHEP::clas
90
91 // - part depending on the polarization of t
92 G4ThreeVector fPhi2;
93
94 // - part depending on the polarization of t
95 G4ThreeVector fPhi3;
96
97 G4double polxx, polyy, polzz, polxz, polzx,
98
99 // - unpolarised + part depending on the pol
100 G4double fPhi0;
101
102 G4double fDice;
103 G4double fPolXS, fUnpXS;
104 G4double ISPxx, ISPyy, ISPzz, ISPnd;
105 };
106 #endif
107