| Geant4 Cross Reference |
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Software license. *
24 // ********************************************************************
25 //
26 //
27 // GEANT4 Class header file
28 //
29 // File name: G4AtimaEnergyLossModel
30 //
31 // Author: Jose Luis Rodriguez Sanchez on base of ATIMA code
32 //
33 // Creation date: 16.01.2018
34 //
35 // Modifications:
36 //
37 //
38 // Class Description:
39 //
40 // Implementation of ATIMA model of energy loss
41 // by heavy charged particles
42
43 // -------------------------------------------------------------------
44 //
45
46 #ifndef G4AtimaEnergyLossModel_h
47 #define G4AtimaEnergyLossModel_h 1
48
49 #include <CLHEP/Units/SystemOfUnits.h>
50
51 #include "G4VEmModel.hh"
52 #include "G4NistManager.hh"
53
54 class G4EmCorrections;
55 class G4ParticleChangeForLoss;
56
57 class G4AtimaEnergyLossModel : public G4VEmModel
58 {
59
60 public:
61
62 explicit G4AtimaEnergyLossModel(const G4ParticleDefinition* p = nullptr,
63 const G4String& nam = "Atima");
64
65 ~G4AtimaEnergyLossModel() override;
66
67 void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
68
69 G4double MinEnergyCut(const G4ParticleDefinition*,
70 const G4MaterialCutsCouple* couple) override;
71
72 G4double ComputeCrossSectionPerElectron(
73 const G4ParticleDefinition*,
74 G4double kineticEnergy,
75 G4double cutEnergy,
76 G4double maxEnergy);
77
78 G4double ComputeCrossSectionPerAtom(
79 const G4ParticleDefinition*,
80 G4double kineticEnergy,
81 G4double Z, G4double A,
82 G4double cutEnergy,
83 G4double maxEnergy) override;
84
85 G4double CrossSectionPerVolume(const G4Material*,
86 const G4ParticleDefinition*,
87 G4double kineticEnergy,
88 G4double cutEnergy,
89 G4double maxEnergy) override;
90
91 G4double ComputeDEDXPerVolume(const G4Material*,
92 const G4ParticleDefinition*,
93 G4double kineticEnergy,
94 G4double) override;
95
96 G4double GetChargeSquareRatio(const G4ParticleDefinition* p,
97 const G4Material* mat,
98 G4double kineticEnergy) override;
99
100 G4double GetParticleCharge(const G4ParticleDefinition* p,
101 const G4Material* mat,
102 G4double kineticEnergy) override;
103
104 void CorrectionsAlongStep(const G4MaterialCutsCouple*,
105 const G4DynamicParticle*,
106 const G4double&,
107 G4double&) override;
108
109 void SampleSecondaries(std::vector<G4DynamicParticle*>*,
110 const G4MaterialCutsCouple*,
111 const G4DynamicParticle*,
112 G4double tmin,
113 G4double maxEnergy) override;
114
115 protected:
116
117 G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
118 G4double kinEnergy) override;
119
120 inline G4double GetChargeSquareRatio() const;
121
122 inline void SetChargeSquareRatio(G4double val);
123
124 private:
125
126 void SetupParameters();
127
128 inline void SetParticle(const G4ParticleDefinition* p);
129
130 inline void SetGenericIon(const G4ParticleDefinition* p);
131
132 G4double StoppingPower(G4double ap, G4double zp, G4double ep, G4double at, G4double zt);
133 G4double Bethek_dedx_e(G4double ap,G4double zp,G4double ep,G4double at,G4double zt);
134 G4double dedx_n(const G4double ap, const G4double zp, const G4double ep, const G4double at, const G4double zt);
135 G4double sezi_dedx_e(const G4double zp, const G4double ep, const G4double at, const G4double zt);
136 G4double sezi_p_se(const G4double energy, const G4double at, const G4double zt);
137 G4double EnergyTable_interpolate(G4double xval, const G4double* y);
138
139 // hide assignment operator
140 G4AtimaEnergyLossModel & operator=(const G4AtimaEnergyLossModel &right) = delete;
141 G4AtimaEnergyLossModel(const G4AtimaEnergyLossModel&) = delete;
142
143 const G4ParticleDefinition* particle;
144 const G4ParticleDefinition* theElectron;
145 G4EmCorrections* corr;
146 G4ParticleChangeForLoss* fParticleChange;
147 G4NistManager* nist;
148 G4Pow* g4calc;
149
150 G4double mass = 0.0;
151 G4double tlimit = DBL_MAX;
152 G4double spin = 0.0;
153 G4double magMoment2 = 0.0;
154 G4double chargeSquare = 1.0;
155 G4double ratio = 1.0;
156 G4double formfact = 0.0;
157 G4double corrFactor = 1.0;
158 G4double MLN10;
159 G4double atomic_mass_unit;
160 G4double dedx_constant;
161 G4double electron_mass;
162 G4double fine_structure;
163 G4double domega2dx_constant;
164
165 G4bool isIon = false;
166
167 static G4double stepE;
168 static G4double tableE[200];
169 static const G4double element_atomic_weights[110];
170 static const G4double ls_coefficients_a[110][200];
171 static const G4double ls_coefficients_ahi[110][200];
172 static const G4double proton_stopping_coef[92][8];
173 static const G4double ionisation_potentials_z[121];
174
175 static const G4double atima_vfermi[92];
176 static const G4double atima_lambda_screening[92];
177 static const G4double x0[92];
178 static const G4double x1[92];
179 static const G4double afermi[92];
180 static const G4double c[92];
181 static const G4double m0[92];
182 static const G4double del_0[92];
183
184 };
185
186 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
187
188 inline void G4AtimaEnergyLossModel::SetParticle(const G4ParticleDefinition* p)
189 {
190 if(particle != p) {
191 particle = p;
192 if(p->GetBaryonNumber() > 3 || p->GetPDGCharge() > CLHEP::eplus)
193 { isIon = true; }
194 SetupParameters();
195 }
196 }
197
198 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
199
200 inline void G4AtimaEnergyLossModel::SetGenericIon(const G4ParticleDefinition* p)
201 {
202 if(p && p->GetParticleName() == "GenericIon") { isIon = true; }
203 }
204
205 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
206
207 inline G4double G4AtimaEnergyLossModel::GetChargeSquareRatio() const
208 {
209 return chargeSquare;
210 }
211
212 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
213
214 inline void G4AtimaEnergyLossModel::SetChargeSquareRatio(G4double val)
215 {
216 chargeSquare = val;
217 }
218
219 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
220
221 #endif
222