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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4MuBremsstrahlungModel
33 //
34 // Author: Vladimir Ivanchenko on base of Laszlo Urban code
35 //
36 // Creation date: 18.05.2002
37 //
38 // Modifications:
39 //
40 // 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko)
41 // 27-01-03 Make models region aware (V.Ivanchenko)
42 // 13-02-03 Add name (V.Ivanchenko)
43 // 10-02-04 Add lowestKinEnergy (V.Ivanchenko)
44 // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
45 // 13-02-06 Add ComputeCrossSectionPerAtom (mma)
46 // 11-10-07 Add ignoreCut flag (V.Ivanchenko)
47 // 28-02-08 Reorganized protected methods and members (V.Ivanchenko)
48 // 06-03-08 Remove obsolete methods and members (V.Ivanchenko)
49 // 31-05-13 Use element selectors instead of local data (V.Ivanchenko)
50 //
51 // Class Description:
52 //
53 // Implementation of bremssrahlung by muons
54 // A.G. Bogdanov et al., IEEE Trans. Nuc. Sci., Vol.53, No.2, 2006
55 //
56 // -------------------------------------------------------------------
57 //
58
59 #ifndef G4MuBremsstrahlungModel_h
60 #define G4MuBremsstrahlungModel_h 1
61
62 #include "G4VEmModel.hh"
63 #include "G4NistManager.hh"
64 #include "G4Exp.hh"
65
66 class G4Element;
67 class G4ParticleChangeForLoss;
68
69 class G4MuBremsstrahlungModel : public G4VEmModel
70 {
71
72 public:
73
74 explicit G4MuBremsstrahlungModel(const G4ParticleDefinition* p = nullptr,
75 const G4String& nam = "MuBrem");
76
77 ~G4MuBremsstrahlungModel() override = default;
78
79 void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
80
81 void InitialiseLocal(const G4ParticleDefinition*,
82 G4VEmModel* masterModel) override;
83
84 G4double MinEnergyCut(const G4ParticleDefinition*,
85 const G4MaterialCutsCouple*) override;
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 ComputeDEDXPerVolume(const G4Material*,
95 const G4ParticleDefinition*,
96 G4double kineticEnergy,
97 G4double cutEnergy) override;
98
99 void SampleSecondaries(std::vector<G4DynamicParticle*>*,
100 const G4MaterialCutsCouple*,
101 const G4DynamicParticle*,
102 G4double tmin,
103 G4double maxEnergy) override;
104
105 inline void SetLowestKineticEnergy(G4double e);
106
107 G4double MinPrimaryEnergy(const G4Material*, const G4ParticleDefinition*,
108 G4double) override;
109
110 // hide assignment operator
111 G4MuBremsstrahlungModel &
112 operator=(const G4MuBremsstrahlungModel &right) = delete;
113 G4MuBremsstrahlungModel(const G4MuBremsstrahlungModel&) = delete;
114
115 protected:
116
117 G4double ComputMuBremLoss(G4double Z, G4double tkin, G4double cut);
118
119 G4double ComputeMicroscopicCrossSection(G4double tkin,
120 G4double Z,
121 G4double cut);
122
123 virtual G4double ComputeDMicroscopicCrossSection(G4double tkin,
124 G4double Z,
125 G4double gammaEnergy);
126
127 void SetParticle(const G4ParticleDefinition*);
128
129 protected:
130
131 const G4ParticleDefinition* particle = nullptr;
132 G4ParticleDefinition* theGamma = nullptr;
133 G4ParticleChangeForLoss* fParticleChange = nullptr;
134 G4NistManager* nist = nullptr;
135
136 G4double mass = 1.0;
137 G4double rmass = 1.0;
138 G4double cc = 1.0;
139 G4double coeff = 1.0;
140 G4double sqrte;
141 G4double bh = 202.4;
142 G4double bh1 = 446.;
143 G4double btf = 183.;
144 G4double btf1 = 1429.;
145
146 G4double lowestKinEnergy;
147 G4double minThreshold;
148
149 static const G4double xgi[6];
150 static const G4double wgi[6];
151 static G4double fDN[93];
152 };
153
154 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
155
156 inline void G4MuBremsstrahlungModel::SetLowestKineticEnergy(G4double e)
157 {
158 lowestKinEnergy = e;
159 }
160
161 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
162
163 #endif
164