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25 //
26 //
27 // -------------------------------------------------------------------
28 //
29 // GEANT4 Class header file
30 //
31 //
32 // File name: G4BraggModel
33 //
34 // Author: Vladimir Ivanchenko
35 //
36 // Creation date: 03.01.2002
37 //
38 // Modifications:
39 // 23-12-02 V.Ivanchenko change interface in order to moveto cut per region
40 // 24-01-03 Make models region aware (V.Ivanchenko)
41 // 13-02-03 Add name (V.Ivanchenko)
42 // 12-11-03 Fix for GenericIons (V.Ivanchenko)
43 // 11-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
44 // 15-02-06 ComputeCrossSectionPerElectron, ComputeCrossSectionPerAtom (mma)
45 // 25-04-06 Added stopping data from PSTAR (V.Ivanchenko)
46 // 12-08-08 Added methods GetParticleCharge, GetChargeSquareRatio,
47 // CorrectionsAlongStep needed for ions(V.Ivanchenko)
48
49 //
50 // Class Description:
51 //
52 // Implementation of energy loss and delta-electron production
53 // by heavy slow charged particles using ICRU'49 and NIST evaluated data
54 // for protons
55
56 // -------------------------------------------------------------------
57 //
58
59 #ifndef G4BraggModel_h
60 #define G4BraggModel_h 1
61
62 #include "G4VEmModel.hh"
63 #include "G4PSTARStopping.hh"
64
65 class G4ParticleChangeForLoss;
66 class G4EmCorrections;
67 class G4ICRU90StoppingData;
68 class G4PSTARStopping;
69
70 class G4BraggModel : public G4VEmModel
71 {
72
73 public:
74
75 explicit G4BraggModel(const G4ParticleDefinition* p = nullptr,
76 const G4String& nam = "Bragg");
77
78 ~G4BraggModel() override;
79
80 void Initialise(const G4ParticleDefinition*, const G4DataVector&) override;
81
82 G4double MinEnergyCut(const G4ParticleDefinition*,
83 const G4MaterialCutsCouple* couple) override;
84
85 G4double ComputeCrossSectionPerElectron(
86 const G4ParticleDefinition*,
87 G4double kineticEnergy,
88 G4double cutEnergy,
89 G4double maxEnergy);
90
91 G4double ComputeCrossSectionPerAtom(
92 const G4ParticleDefinition*,
93 G4double kineticEnergy,
94 G4double Z, G4double A,
95 G4double cutEnergy,
96 G4double maxEnergy) override;
97
98 G4double CrossSectionPerVolume(const G4Material*,
99 const G4ParticleDefinition*,
100 G4double kineticEnergy,
101 G4double cutEnergy,
102 G4double maxEnergy) override;
103
104 G4double ComputeDEDXPerVolume(const G4Material*,
105 const G4ParticleDefinition*,
106 G4double kineticEnergy,
107 G4double cutEnergy) override;
108
109 void SampleSecondaries(std::vector<G4DynamicParticle*>*,
110 const G4MaterialCutsCouple*,
111 const G4DynamicParticle*,
112 G4double tmin,
113 G4double maxEnergy) override;
114
115 // Compute ion charge
116 G4double GetChargeSquareRatio(const G4ParticleDefinition*,
117 const G4Material*,
118 G4double kineticEnergy) override;
119
120 G4double GetParticleCharge(const G4ParticleDefinition* p,
121 const G4Material* mat,
122 G4double kineticEnergy) override;
123
124 // hide assignment operator
125 G4BraggModel & operator=(const G4BraggModel &right) = delete;
126 G4BraggModel(const G4BraggModel&) = delete;
127
128 protected:
129
130 void SetParticle(const G4ParticleDefinition* p);
131
132 G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
133 G4double kinEnergy) final;
134
135 inline void SetChargeSquareRatio(G4double val);
136
137 private:
138
139 void HasMaterial(const G4Material* material);
140
141 G4double StoppingPower(const G4Material* material,
142 G4double kineticEnergy);
143
144 G4double ElectronicStoppingPower(G4double z,
145 G4double kineticEnergy) const;
146
147 G4double DEDX(const G4Material* material, G4double kineticEnergy);
148
149 G4bool MolecIsInZiegler1988(const G4Material* material);
150
151 G4double ChemicalFactor(G4double kineticEnergy, G4double eloss125) const;
152
153 protected:
154
155 const G4ParticleDefinition* particle = nullptr;
156 G4ParticleDefinition* theElectron = nullptr;
157 G4ParticleChangeForLoss* fParticleChange = nullptr;
158
159 const G4Material* currentMaterial = nullptr;
160 const G4Material* baseMaterial = nullptr;
161
162 G4EmCorrections* corr = nullptr;
163
164 static G4ICRU90StoppingData* fICRU90;
165 static G4PSTARStopping* fPSTAR;
166
167 G4double mass = 0.0;
168 G4double spin = 0.0;
169 G4double chargeSquare = 1.0;
170 G4double massRate = 1.0;
171 G4double ratio = 1.0;
172 G4double protonMassAMU = 1.007276;
173 G4double lowestKinEnergy;
174 G4double theZieglerFactor;
175 G4double expStopPower125; // Experimental Stopping power at 125keV
176
177 G4int iMolecula = -1; // index in the molecula's table
178 G4int iPSTAR = -1; // index in NIST PSTAR
179 G4int iICRU90 = -1;
180
181 private:
182
183 G4bool isIon = false;
184 G4bool isFirst = false;
185 };
186
187 inline void G4BraggModel::SetChargeSquareRatio(G4double val)
188 {
189 chargeSquare = val;
190 }
191
192 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
193
194 #endif
195