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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4MuBetheBlochModel
33 //
34 // Author: Vladimir Ivanchenko on base of Laszlo Urban code
35 //
36 // Creation date: 09.08.2002
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 Nama (V.Ivanchenko)
43 // 10-02-04 Calculation of radiative corrections using R.Kokoulin model (V.I)
44 // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
45 // 12-04-05 Add usage of G4EmCorrections (V.Ivanchenko)
46 // 13-02-06 ComputeCrossSectionPerElectron, ComputeCrossSectionPerAtom (mma)
47 //
48
49 //
50 // Class Description:
51 //
52 // Implementation of Bethe-Bloch model of energy loss and
53 // delta-electron production by heavy charged particles
54
55 // -------------------------------------------------------------------
56 //
57
58 #ifndef G4MuBetheBlochModel_h
59 #define G4MuBetheBlochModel_h 1
60
61 #include "G4VEmModel.hh"
62
63 class G4ParticleChangeForLoss;
64 class G4EmCorrections;
65
66 class G4MuBetheBlochModel : public G4VEmModel
67 {
68
69 public:
70
71 explicit G4MuBetheBlochModel(const G4ParticleDefinition* p = nullptr,
72 const G4String& nam = "MuBetheBloch");
73
74 ~G4MuBetheBlochModel() override = default;
75
76 void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
77
78 G4double MinEnergyCut(const G4ParticleDefinition*,
79 const G4MaterialCutsCouple*) override;
80
81 G4double ComputeCrossSectionPerElectron(
82 const G4ParticleDefinition*,
83 G4double kineticEnergy,
84 G4double cutEnergy,
85 G4double maxEnergy);
86
87 G4double ComputeCrossSectionPerAtom(
88 const G4ParticleDefinition*,
89 G4double kineticEnergy,
90 G4double Z, G4double A,
91 G4double cutEnergy,
92 G4double maxEnergy) override;
93
94 G4double CrossSectionPerVolume(const G4Material*,
95 const G4ParticleDefinition*,
96 G4double kineticEnergy,
97 G4double cutEnergy,
98 G4double maxEnergy) override;
99
100 G4double ComputeDEDXPerVolume(const G4Material*,
101 const G4ParticleDefinition*,
102 G4double kineticEnergy,
103 G4double cutEnergy) override;
104
105 void SampleSecondaries(std::vector<G4DynamicParticle*>*,
106 const G4MaterialCutsCouple*,
107 const G4DynamicParticle*,
108 G4double tmin,
109 G4double maxEnergy) override;
110
111 // hide assignment operator
112 G4MuBetheBlochModel & operator=(const G4MuBetheBlochModel &right) = delete;
113 G4MuBetheBlochModel(const G4MuBetheBlochModel&) = delete;
114
115 protected:
116
117 G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
118 G4double kinEnergy) override;
119
120 private:
121
122 void SetParticle(const G4ParticleDefinition* p);
123
124 const G4ParticleDefinition* particle = nullptr;
125 G4ParticleDefinition* theElectron = nullptr;
126 G4ParticleChangeForLoss* fParticleChange = nullptr;
127 G4EmCorrections* corr = nullptr;
128
129 G4double limitRadCorrection;
130 G4double limitKinEnergy;
131 G4double logLimitKinEnergy;
132 G4double mass = 1.0;
133 G4double massSquare = 1.0;
134 G4double ratio = 1.0;
135 G4double twoln10;
136 G4double alphaprime;
137 static G4double xgi[8],wgi[8];
138 };
139
140 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.....
141
142 #endif
143