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25 //
26 //
27 // -------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4eCoulombScatteringModel
33 //
34 // Author: Vladimir Ivanchenko
35 //
36 // Creation date: 19.02.2006
37 //
38 // Modifications:
39 // 01.08.06 V.Ivanchenko extend upper limit of
40 // logic of building - only elements
41 // 08.08.06 V.Ivanchenko build internal table
42 // 19.08.06 V.Ivanchenko add inline function S
43 // make some members pro
44 // 09.10.07 V.Ivanchenko reorganized methods,
45 // 09.06.08 V.Ivanchenko add SelectIsotope and
46 // 17.06.09 C.Consoalndi modified SetupTarget
47 // 27.05.10 V.Ivanchenko added G4WentzelOKandV
48 // compute cross sections and sam
49 //
50 //
51 // Class Description:
52 //
53 // Implementation of eCoulombScattering of a c
54 // on Atomic Nucleus for interval of scatterin
55 // thetaMin - ThetaMax.
56 // The model based on analysis of J.M.Fernan
57 // NIM B73(1993)447 originated from G.Wentzel
58 // screening parameter from H.A.Bethe Phys. Re
59 //
60
61 // -------------------------------------------
62 //
63
64 #ifndef G4eCoulombScatteringModel_h
65 #define G4eCoulombScatteringModel_h 1
66
67 #include "G4VEmModel.hh"
68 #include "globals.hh"
69 #include "G4MaterialCutsCouple.hh"
70 #include "G4WentzelOKandVIxSection.hh"
71
72 class G4ParticleChangeForGamma;
73 class G4ParticleDefinition;
74 class G4IonTable;
75 class G4NistManager;
76
77 class G4eCoulombScatteringModel : public G4VEm
78 {
79
80 public:
81
82 explicit G4eCoulombScatteringModel(G4bool co
83
84 ~G4eCoulombScatteringModel() override;
85
86 void Initialise(const G4ParticleDefinition*,
87
88 void InitialiseLocal(const G4ParticleDefinit
89 G4VEmModel* masterModel
90
91 G4double ComputeCrossSectionPerAtom(
92 const G4Partic
93 G4double kinEnergy,
94 G4double Z,
95 G4double A,
96 G4double cut,
97 G4double emax) override;
98
99 void SampleSecondaries(std::vector<G4Dynamic
100 const G4MaterialCutsCouple*,
101 const G4DynamicParticle*,
102 G4double tmin,
103 G4double maxEnergy) override;
104
105 G4double MinPrimaryEnergy(const G4Material*,
106 G4double) final;
107
108 // defines low energy limit of the model
109 inline void SetLowEnergyThreshold(G4double v
110
111 // user definition of low-energy threshold o
112 inline void SetRecoilThreshold(G4double eth)
113
114 // defines low energy limit on energy transf
115 inline void SetFixedCut(G4double);
116
117 // low energy limit on energy transfer to at
118 inline G4double GetFixedCut() const;
119
120 // hide assignment operator
121 G4eCoulombScatteringModel & operator=
122 (const G4eCoulombScatteringModel &right) = d
123 G4eCoulombScatteringModel(const G4eCoulombS
124
125 protected:
126
127 inline void DefineMaterial(const G4MaterialC
128
129 inline void SetupParticle(const G4ParticleDe
130
131 private:
132
133 G4IonTable* theIonTable;
134 G4ParticleChangeForGamma* fParticleChange =
135 G4WentzelOKandVIxSection* wokvi;
136 G4NistManager* fNistManager;
137
138 const std::vector<G4double>* pCuts = nullptr
139
140 const G4ParticleDefinition* particle = nullp
141 const G4ParticleDefinition* theProton;
142
143 const G4MaterialCutsCouple* currentCouple =
144 const G4Material* currentMaterial = nullptr;
145 G4int currentMaterialIndex = 0;
146
147 G4double cosThetaMin = 1.0;
148 G4double cosThetaMax = -1.0;
149 G4double recoilThreshold = 0.0;
150 G4double elecRatio = 0.0;
151 G4double fixedCut = -1.0;
152 G4double mass;
153
154 G4bool isCombined;
155 };
156
157 //....oooOO0OOooo........oooOO0OOooo........oo
158
159 inline
160 void G4eCoulombScatteringModel::DefineMaterial
161 {
162 if(cup != currentCouple) {
163 currentCouple = cup;
164 currentMaterial = cup->GetMaterial();
165 currentMaterialIndex = currentCouple->GetI
166 }
167 }
168
169 //....oooOO0OOooo........oooOO0OOooo........oo
170
171 inline
172 void G4eCoulombScatteringModel::SetupParticle(
173 {
174 // Initialise mass and charge
175 if(p != particle) {
176 particle = p;
177 mass = particle->GetPDGMass();
178 wokvi->SetupParticle(p);
179 }
180 }
181
182 //....oooOO0OOooo........oooOO0OOooo........oo
183
184 inline void G4eCoulombScatteringModel::SetReco
185 {
186 recoilThreshold = eth;
187 }
188
189 //....oooOO0OOooo........oooOO0OOooo........oo
190
191 inline void G4eCoulombScatteringModel::SetFixe
192 {
193 fixedCut = val;
194 }
195
196 //....oooOO0OOooo........oooOO0OOooo........oo
197
198 inline G4double G4eCoulombScatteringModel::Get
199 {
200 return fixedCut;
201 }
202
203 //....oooOO0OOooo........oooOO0OOooo........oo
204
205 #endif
206