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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4MollerBhabhaModel
33 //
34 // Author: Vladimir Ivanchenko on base of Laszlo Urban code
35 //
36 // Creation date: 07.01.2002
37 //
38 // Modifications:
39 //
40 // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko)
41 // 24-01-03 Make models region aware (V.Ivanchenko)
42 // 13-02-03 Add name (V.Ivanchenko)
43 // 06-02-06 ComputeCrossSectionPerElectron, ComputeCrossSectionPerAtom (mma)
44 // 14-01-07 promote SetParticle() from private to protected (mma)
45
46 //
47 // Class Description:
48 //
49 // Implementation of energy loss process and delta-electrons production
50 // of electrons and positrons
51
52 // -------------------------------------------------------------------
53 //
54
55 #ifndef G4MollerBhabhaModel_h
56 #define G4MollerBhabhaModel_h 1
57
58 #include "G4VEmModel.hh"
59
60 class G4ParticleChangeForLoss;
61
62 class G4MollerBhabhaModel : public G4VEmModel
63 {
64
65 public:
66
67 explicit G4MollerBhabhaModel(const G4ParticleDefinition* p = nullptr,
68 const G4String& nam = "MollerBhabha");
69
70 ~G4MollerBhabhaModel() override;
71
72 void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
73
74 virtual G4double ComputeCrossSectionPerElectron(
75 const G4ParticleDefinition*,
76 G4double kineticEnergy,
77 G4double cutEnergy,
78 G4double maxEnergy);
79
80 G4double ComputeCrossSectionPerAtom(
81 const G4ParticleDefinition*,
82 G4double kineticEnergy,
83 G4double Z, G4double A,
84 G4double cutEnergy,
85 G4double maxEnergy) override;
86
87 G4double CrossSectionPerVolume(const G4Material*,
88 const G4ParticleDefinition*,
89 G4double kineticEnergy,
90 G4double cutEnergy,
91 G4double maxEnergy) override;
92
93 G4double ComputeDEDXPerVolume(const G4Material*,
94 const G4ParticleDefinition*,
95 G4double kineticEnergy,
96 G4double cutEnergy) override;
97
98 void SampleSecondaries(std::vector<G4DynamicParticle*>*,
99 const G4MaterialCutsCouple*,
100 const G4DynamicParticle*,
101 G4double tmin,
102 G4double maxEnergy) override;
103
104 // hide assignment operator
105 G4MollerBhabhaModel & operator=(const G4MollerBhabhaModel &right) = delete;
106 G4MollerBhabhaModel(const G4MollerBhabhaModel&) = delete;
107
108 protected:
109
110 G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
111 G4double kinEnergy) final;
112
113 inline void SetParticle(const G4ParticleDefinition* p);
114
115 const G4ParticleDefinition* particle;
116 G4ParticleDefinition* theElectron;
117 G4ParticleChangeForLoss* fParticleChange;
118
119 G4bool isElectron;
120 G4double twoln10;
121 G4double lowLimit;
122
123 private:
124
125 G4bool isInitialised;
126
127 };
128
129 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
130
131 inline void G4MollerBhabhaModel::SetParticle(const G4ParticleDefinition* p)
132 {
133 particle = p;
134 isElectron = (p == theElectron);
135 }
136
137 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
138
139 #endif
140