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26 // -------------------------------------------------------------------
27 //
28 // GEANT4 Class header file
29 //
30 //
31 // File name: G4LindhardSorensenIonModel
32 //
33 // Author: Alexander Bagulya & Vladimir Ivanchenko
34 //
35 // Creation date: 16.04.2018
36 //
37 //
38 // Class Description:
39 //
40 // Implementation of ion ionisation energy loss and delta-electron
41 // production by heavy charged particles according to
42 // J. Lindhard & A.H. Sorensen, Phys. Rev. A 53 (1996) 2443-2455
43
44 // -------------------------------------------------------------------
45 //
46
47 #ifndef G4LindhardSorensenIonModel_h
48 #define G4LindhardSorensenIonModel_h 1
49
50 #include <vector>
51
52 #include "G4VEmModel.hh"
53 #include "G4NistManager.hh"
54
55 class G4EmCorrections;
56 class G4ParticleChangeForLoss;
57 class G4LindhardSorensenData;
58 class G4BraggModel;
59 class G4BetheBlochModel;
60 class G4IonICRU73Data;
61
62 class G4LindhardSorensenIonModel : public G4VEmModel
63 {
64 public:
65
66 explicit G4LindhardSorensenIonModel(const G4ParticleDefinition* p = nullptr,
67 const G4String& nam = "LindhardSorensen");
68
69 ~G4LindhardSorensenIonModel() override;
70
71 void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
72
73 G4double MinEnergyCut(const G4ParticleDefinition*,
74 const G4MaterialCutsCouple* couple) override;
75
76 G4double ComputeCrossSectionPerElectron(
77 const G4ParticleDefinition*,
78 G4double kineticEnergy,
79 G4double cutEnergy,
80 G4double maxEnergy);
81
82 G4double ComputeCrossSectionPerAtom(
83 const G4ParticleDefinition*,
84 G4double kineticEnergy,
85 G4double Z, G4double A,
86 G4double cutEnergy,
87 G4double maxEnergy) override;
88
89 G4double CrossSectionPerVolume(const G4Material*,
90 const G4ParticleDefinition*,
91 G4double kineticEnergy,
92 G4double cutEnergy,
93 G4double maxEnergy) override;
94
95 G4double ComputeDEDXPerVolume(const G4Material*,
96 const G4ParticleDefinition*,
97 G4double kineticEnergy,
98 G4double cutEnergy) override;
99
100 G4double GetChargeSquareRatio(const G4ParticleDefinition* p,
101 const G4Material* mat,
102 G4double kineticEnergy) override;
103
104 G4double GetParticleCharge(const G4ParticleDefinition* p,
105 const G4Material* mat,
106 G4double kineticEnergy) override;
107
108 void CorrectionsAlongStep(const G4MaterialCutsCouple* couple,
109 const G4DynamicParticle* dp,
110 const G4double& length,
111 G4double& eloss) override;
112
113 void SampleSecondaries(std::vector<G4DynamicParticle*>*,
114 const G4MaterialCutsCouple*,
115 const G4DynamicParticle*,
116 G4double tmin,
117 G4double maxEnergy) override;
118
119 // hide assignment operator
120 G4LindhardSorensenIonModel & operator=
121 (const G4LindhardSorensenIonModel &right) = delete;
122 G4LindhardSorensenIonModel(const G4LindhardSorensenIonModel&) = delete;
123
124 protected:
125
126 G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
127 G4double kinEnergy) override;
128
129 inline void SetChargeSquareRatio(G4double val);
130
131 private:
132
133 void SetupParameters();
134
135 void InitialiseLS();
136
137 G4double ComputeDEDXPerVolumeLS(const G4Material*,
138 const G4ParticleDefinition*,
139 G4double kinEnergy, G4double cutEnergy);
140
141 inline void SetParticle(const G4ParticleDefinition* p);
142
143 // static const G4int MAXZION = 93;
144
145 static G4IonICRU73Data* fIonData;
146 static G4LindhardSorensenData* lsdata;
147
148 const G4ParticleDefinition* particle = nullptr;
149 G4ParticleDefinition* theElectron;
150 G4EmCorrections* corr;
151 G4ParticleChangeForLoss* fParticleChange = nullptr;
152 G4NistManager* nist;
153 G4BraggModel* fBraggModel;
154 G4BetheBlochModel* fBBModel;
155
156 G4int Zin = 1;
157 G4double mass = 0.0;
158 G4double tlimit = DBL_MAX;
159 G4double spin = 0.0;
160 G4double magMoment2 = 0.0;
161 G4double chargeSquare = 1.0;
162 G4double charge = 1.0;
163 G4double eRatio = 0.0;
164 G4double pRatio = 1.0;
165 G4double formfact = 0.0;
166 G4double twoln10;
167 G4double fElimit;
168 G4bool isFirst = false;
169 };
170
171 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
172
173 inline void
174 G4LindhardSorensenIonModel::SetParticle(const G4ParticleDefinition* p)
175 {
176 if(particle != p) {
177 particle = p;
178 SetupParameters();
179 }
180 }
181
182 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
183
184 inline void G4LindhardSorensenIonModel::SetChargeSquareRatio(G4double val)
185 {
186 chargeSquare = val;
187 }
188
189 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
190
191 #endif
192