| Geant4 Cross Reference |
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Software license. *
24 // ********************************************************************
25 //
26 // -------------------------------------------------------------------
27 //
28 // Geant4 Class header file
29 //
30 // File name: G4PolarizedAnnihilationModel
31 //
32 // Author: Andreas Schaelicke and Pavel Starovoitov
33 //
34 // Class Description:
35 // Implementation of polarized gamma Annihilation scattering on free electron
36 //
37 // -------------------------------------------------------------------
38
39 #ifndef G4PolarizedAnnihilationModel_h
40 #define G4PolarizedAnnihilationModel_h 1
41
42 #include "globals.hh"
43 #include "G4eeToTwoGammaModel.hh"
44 #include "G4ThreeVector.hh"
45 #include "G4StokesVector.hh"
46
47 class G4DynamicParticle;
48 class G4MaterialCutsCouple;
49 class G4ParticleChangeForGamma;
50 class G4ParticleDefinition;
51 class G4PolarizedAnnihilationXS;
52
53 class G4PolarizedAnnihilationModel : public G4eeToTwoGammaModel
54 {
55 public:
56 explicit G4PolarizedAnnihilationModel(
57 const G4ParticleDefinition* p = nullptr,
58 const G4String& nam = "Polarized-Annihilation");
59
60 virtual ~G4PolarizedAnnihilationModel() override;
61
62 virtual void Initialise(const G4ParticleDefinition*,
63 const G4DataVector&) override;
64
65 virtual G4double ComputeCrossSectionPerElectron(G4double kinEnergy) override;
66
67 void ComputeAsymmetriesPerElectron(G4double gammaEnergy, G4double& valueX,
68 G4double& valueA, G4double& valueT);
69
70 virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
71 const G4MaterialCutsCouple*,
72 const G4DynamicParticle*, G4double tmin,
73 G4double maxEnergy) final;
74
75 // polarized routines
76 inline void SetTargetPolarization(const G4ThreeVector& pTarget);
77 inline void SetBeamPolarization(const G4ThreeVector& pBeam);
78 inline const G4ThreeVector& GetTargetPolarization() const;
79 inline const G4ThreeVector& GetBeamPolarization() const;
80 inline const G4ThreeVector& GetFinalGamma1Polarization() const;
81 inline const G4ThreeVector& GetFinalGamma2Polarization() const;
82
83 G4PolarizedAnnihilationModel& operator =(
84 const G4PolarizedAnnihilationModel& right) = delete;
85 G4PolarizedAnnihilationModel(const G4PolarizedAnnihilationModel&) = delete;
86
87 private:
88 G4PolarizedAnnihilationXS* fCrossSectionCalculator;
89 G4ParticleChangeForGamma* fParticleChange;
90
91 // incoming
92 G4StokesVector fBeamPolarization; // positron
93 G4StokesVector fTargetPolarization; // electron
94 // outgoing
95 G4StokesVector fFinalGamma1Polarization;
96 G4StokesVector fFinalGamma2Polarization;
97
98 G4int fVerboseLevel;
99 };
100
101 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
102
103 inline void G4PolarizedAnnihilationModel::SetTargetPolarization(
104 const G4ThreeVector& pTarget)
105 {
106 fTargetPolarization = G4StokesVector(pTarget);
107 }
108 inline void G4PolarizedAnnihilationModel::SetBeamPolarization(
109 const G4ThreeVector& pBeam)
110 {
111 fBeamPolarization = G4StokesVector(pBeam);
112 }
113 inline const G4ThreeVector&
114 G4PolarizedAnnihilationModel::GetTargetPolarization() const
115 {
116 return fTargetPolarization;
117 }
118 inline const G4ThreeVector& G4PolarizedAnnihilationModel::GetBeamPolarization()
119 const
120 {
121 return fBeamPolarization;
122 }
123 inline const G4ThreeVector&
124 G4PolarizedAnnihilationModel::GetFinalGamma1Polarization() const
125 {
126 return fFinalGamma1Polarization;
127 }
128 inline const G4ThreeVector&
129 G4PolarizedAnnihilationModel::GetFinalGamma2Polarization() const
130 {
131 return fFinalGamma2Polarization;
132 }
133
134 #endif
135