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25 //
26 // Geant4 Class file
27 //
28 // File name: G4PolarizedPhotoElectricXS
29 //
30 // Author: Karim Laihem
31
32 #include "G4PolarizedPhotoElectricXS.hh"
33
34 //....oooOO0OOooo........oooOO0OOooo........oo
35 G4PolarizedPhotoElectricXS::G4PolarizedPhotoEl
36 {
37 fFinalElectronPolarization = G4StokesVector:
38 }
39
40 //....oooOO0OOooo........oooOO0OOooo........oo
41 G4PolarizedPhotoElectricXS::~G4PolarizedPhotoE
42
43 //....oooOO0OOooo........oooOO0OOooo........oo
44 void G4PolarizedPhotoElectricXS::Initialize(G4
45 G4
46 co
47 co
48 G4
49 {
50 // Polarization transfer to e- in Photoelect
51 G4double Gfactor = aLept0E / CLHEP::electr
52 G4double Gfactor_2 = Gfactor * Gfactor;
53
54 G4double beta = std::sqrt(1. - 1. / (Gfactor
55
56 G4double Stokes_P3 = beamPol.z();
57
58 G4double Lept0E = aLept0E / CLHEP::electron
59 G4double Lept0E2 = Lept0E * Lept0E;
60 G4double GammaE = aGammaE / CLHEP::electron
61
62 G4double cosTheta = std::sqrt(1. - sinTheta
63
64 G4double I_Lepton0 =
65 1.0 +
66 (1. / GammaE) * ((2. / (GammaE * Lept0E *
67
68 G4double A_Lepton0 =
69 (Lept0E / (Lept0E + 1)) *
70 (2.0 / (GammaE * Lept0E) + beta * cosTheta
71 (2.0 / ((GammaE * Lept0E2) * (1.0 - beta
72 I_Lepton0;
73
74 G4double B_Lepton0 = (Lept0E / (Lept0E + 1.0
75 (2.0 / (GammaE * Lept0E
76 I_Lepton0;
77
78 fFinalElectronPolarization.setX(Stokes_P3 *
79 fFinalElectronPolarization.setY(0.);
80 fFinalElectronPolarization.setZ(Stokes_P3 *
81
82 if((fFinalElectronPolarization.x() * fFinalE
83 fFinalElectronPolarization.y() * fFinalE
84 fFinalElectronPolarization.z() * fFinalE
85
86 {
87 G4ExceptionDescription ed;
88 ed << "Warning: PhotoelectricEffect Proble
89 "lepton:Px2 + Py2 + Pz2 > 1\n";
90 ed << "Polarization transfer forced to be
91 "Photo\n";
92 G4Exception("G4PolarizedPhotoElectricXS::I
93 ed);
94 fFinalElectronPolarization = beamPol; //
95 }
96 }
97
98 //....oooOO0OOooo........oooOO0OOooo........oo
99 G4double G4PolarizedPhotoElectricXS::XSection(
100
101 {
102 G4ExceptionDescription ed;
103 ed << "ERROR dummy routine G4PolarizedPhotoE
104 "called\n";
105 G4Exception("G4PolarizedPhotoElectricXS::XSe
106 ed);
107 return 0.;
108 }
109
110 //....oooOO0OOooo........oooOO0OOooo........oo
111 G4StokesVector G4PolarizedPhotoElectricXS::Get
112 {
113 return fFinalElectronPolarization;
114 }
115
116 //....oooOO0OOooo........oooOO0OOooo........oo
117 G4StokesVector G4PolarizedPhotoElectricXS::Get
118 {
119 return G4StokesVector();
120 }
121