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26 // -------------------------------------------------------------------
27 //
28 // Geant4 Class header file
29 //
30 // File name: G4PolarizedComptonModel
31 //
32 // Author: Andreas Schaelicke
33 //
34 // Class Description:
35 // Implementation of polarized gamma Compton scattering on free electron
36
37 #ifndef G4PolarizedComptonModel_h
38 #define G4PolarizedComptonModel_h 1
39
40 #include "globals.hh"
41 #include "G4KleinNishinaCompton.hh"
42 #include "G4StokesVector.hh"
43 #include "G4ThreeVector.hh"
44
45 class G4DynamicParticle;
46 class G4MaterialCutsCouple;
47 class G4ParticleDefinition;
48 class G4ParticleChangeForGamma;
49 class G4VPolarizedXS;
50
51 class G4PolarizedComptonModel : public G4KleinNishinaCompton
52 {
53 public:
54 explicit G4PolarizedComptonModel(const G4ParticleDefinition* p = nullptr,
55 const G4String& nam = "Polarized-Compton");
56
57 virtual ~G4PolarizedComptonModel() override;
58
59 virtual G4double ComputeCrossSectionPerAtom(const G4ParticleDefinition*,
60 G4double kinEnergy, G4double Z,
61 G4double A, G4double cut,
62 G4double emax) override;
63 G4double ComputeAsymmetryPerAtom(G4double gammaEnergy, G4double Z);
64
65 virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
66 const G4MaterialCutsCouple*,
67 const G4DynamicParticle*, G4double tmin,
68 G4double maxEnergy) override;
69
70 // polarized routines
71 inline void SetTargetPolarization(const G4ThreeVector& pTarget);
72 inline void SetBeamPolarization(const G4ThreeVector& pBeam);
73 inline const G4ThreeVector& GetTargetPolarization() const;
74 inline const G4ThreeVector& GetBeamPolarization() const;
75 inline const G4ThreeVector& GetFinalGammaPolarization() const;
76 inline const G4ThreeVector& GetFinalElectronPolarization() const;
77
78 // hide assignment operator
79 G4PolarizedComptonModel& operator=(const G4PolarizedComptonModel& right) =
80 delete;
81 G4PolarizedComptonModel(const G4PolarizedComptonModel&) = delete;
82
83 private:
84 void PrintWarning(const G4DynamicParticle*, G4int, G4double grej,
85 G4double onecos, G4double phi, const G4String) const;
86
87 static constexpr G4int fLoopLim = 10000;
88
89 G4VPolarizedXS* fCrossSectionCalculator;
90 // incoming
91 G4StokesVector fBeamPolarization; // photon
92 G4StokesVector fTargetPolarization; // electron
93 // outgoing
94 G4StokesVector fFinalGammaPolarization;
95 G4StokesVector finalElectronPolarization;
96
97 G4int fVerboseLevel;
98 };
99
100 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
101
102 inline void G4PolarizedComptonModel::SetTargetPolarization(
103 const G4ThreeVector& pTarget)
104 {
105 fTargetPolarization = G4StokesVector(pTarget);
106 }
107 inline void G4PolarizedComptonModel::SetBeamPolarization(
108 const G4ThreeVector& pBeam)
109 {
110 fBeamPolarization = G4StokesVector(pBeam);
111 }
112 inline const G4ThreeVector& G4PolarizedComptonModel::GetTargetPolarization()
113 const
114 {
115 return fTargetPolarization;
116 }
117 inline const G4ThreeVector& G4PolarizedComptonModel::GetBeamPolarization() const
118 {
119 return fBeamPolarization;
120 }
121 inline const G4ThreeVector& G4PolarizedComptonModel::GetFinalGammaPolarization()
122 const
123 {
124 return fFinalGammaPolarization;
125 }
126 inline const G4ThreeVector&
127 G4PolarizedComptonModel::GetFinalElectronPolarization() const
128 {
129 return finalElectronPolarization;
130 }
131
132 #endif
133