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1 // 1
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24 // *******************************************
25 //
26 //
27 // -------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4KleinNishinaModel
33 //
34 // Author: Vladimir Ivanchenko on base
35 //
36 // Creation date: 13.06.2010
37 //
38 // Modifications:
39 //
40 // Class Description:
41 //
42 // Implementation of gamma Compton scattering
43 //
44
45 // -------------------------------------------
46 //
47
48 #ifndef G4KleinNishinaModel_h
49 #define G4KleinNishinaModel_h 1
50
51 #include "G4VEmModel.hh"
52 #include "G4LorentzVector.hh"
53 #include <vector>
54
55 class G4ParticleChangeForGamma;
56 class G4VAtomDeexcitation;
57
58 class G4KleinNishinaModel : public G4VEmModel
59 {
60
61 public:
62
63 explicit G4KleinNishinaModel(const G4String&
64
65 ~G4KleinNishinaModel() override;
66
67 void Initialise(const G4ParticleDefinition*,
68
69 void InitialiseLocal(const G4ParticleDefinit
70 G4VEmModel* masterModel) override;
71
72 G4double ComputeCrossSectionPerAtom(
73 const G4Partic
74 G4double
75 G4double
76 G4double
77 G4double
78 G4double
79
80 void SampleSecondaries(std::vector<G4Dynamic
81 const G4MaterialCutsCouple*,
82 const G4DynamicParticle*,
83 G4double tmin,
84 G4double maxEnergy) override;
85
86 // hide assignment operator
87 G4KleinNishinaModel & operator=(const G4Kle
88 G4KleinNishinaModel(const G4KleinNishinaMod
89
90 protected:
91
92 G4ParticleDefinition* theGamma;
93 G4ParticleDefinition* theElectron;
94 G4ParticleChangeForGamma* fParticleChange;
95 G4double lowestSecondaryEne
96
97 private:
98
99 G4LorentzVector lv1, lv2;
100 G4ThreeVector bst;
101
102 G4VAtomDeexcitation* fAtomDeexcitation;
103 G4double limitFactor;
104 std::vector<G4double> fProbabilities;
105 };
106
107 //....oooOO0OOooo........oooOO0OOooo........oo
108
109 #endif
110