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25 // 25 //
>> 26 // $Id: G4BetheBlochModel.hh,v 1.20 2009/04/23 17:44:43 vnivanch Exp $
>> 27 // GEANT4 tag $Name: geant4-09-03-patch-01 $
26 // 28 //
27 // ------------------------------------------- 29 // -------------------------------------------------------------------
28 // 30 //
29 // GEANT4 Class header file 31 // GEANT4 Class header file
30 // 32 //
31 // 33 //
32 // File name: G4BetheBlochModel 34 // File name: G4BetheBlochModel
33 // 35 //
34 // Author: Vladimir Ivanchenko on base 36 // Author: Vladimir Ivanchenko on base of Laszlo Urban code
35 // 37 //
36 // Creation date: 03.01.2002 38 // Creation date: 03.01.2002
37 // 39 //
38 // Modifications: 40 // Modifications:
39 // 41 //
40 // Modified by Michel Maire and Vladimir Ivanc << 42 // 23-12-02 V.Ivanchenko change interface in order to moveto cut per region
>> 43 // 24-01-03 Make models region aware (V.Ivanchenko)
>> 44 // 13-02-03 Add name (V.Ivanchenko)
>> 45 // 12-11-03 Fix for GenericIons (V.Ivanchenko)
>> 46 // 24-03-05 Add G4EmCorrections (V.Ivanchenko)
>> 47 // 11-04-05 Major optimisation of internal interfaces (V.Ivanchenko)
>> 48 // 11-04-04 Move MaxSecondaryEnergy to models (V.Ivanchenko)
>> 49 // 11-02-06 ComputeCrossSectionPerElectron, ComputeCrossSectionPerAtom (mma)
>> 50 // 12-08-08 Added methods GetParticleCharge, GetChargeSquareRatio,
>> 51 // CorrectionsAlongStep needed for ions(V.Ivanchenko)
>> 52
41 // 53 //
42 // Class Description: 54 // Class Description:
43 // 55 //
44 // Implementation of Bethe-Bloch model of ener 56 // Implementation of Bethe-Bloch model of energy loss and
45 // delta-electron production by heavy charged 57 // delta-electron production by heavy charged particles
46 58
47 // ------------------------------------------- 59 // -------------------------------------------------------------------
48 // 60 //
49 61
50 #ifndef G4BetheBlochModel_h 62 #ifndef G4BetheBlochModel_h
51 #define G4BetheBlochModel_h 1 63 #define G4BetheBlochModel_h 1
52 64
53 #include "G4VEmModel.hh" 65 #include "G4VEmModel.hh"
>> 66 #include "G4NistManager.hh"
54 67
55 class G4EmCorrections; 68 class G4EmCorrections;
56 class G4ParticleChangeForLoss; 69 class G4ParticleChangeForLoss;
57 class G4ICRU90StoppingData; <<
58 class G4NistManager; <<
59 70
60 class G4BetheBlochModel : public G4VEmModel 71 class G4BetheBlochModel : public G4VEmModel
61 { 72 {
62 73
63 public: 74 public:
64 75
65 explicit G4BetheBlochModel(const G4ParticleD << 76 G4BetheBlochModel(const G4ParticleDefinition* p = 0,
66 const G4String& nam = "BetheBloch") << 77 const G4String& nam = "BetheBloch");
67 <<
68 ~G4BetheBlochModel() override; <<
69 78
70 void Initialise(const G4ParticleDefinition*, << 79 virtual ~G4BetheBlochModel();
71 80
72 G4double MinEnergyCut(const G4ParticleDefini << 81 virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
73 const G4MaterialCutsCouple* couple) over <<
74 82
>> 83 virtual G4double MinEnergyCut(const G4ParticleDefinition*,
>> 84 const G4MaterialCutsCouple*);
>> 85
75 virtual G4double ComputeCrossSectionPerElect 86 virtual G4double ComputeCrossSectionPerElectron(
76 const G4ParticleDefinition*, 87 const G4ParticleDefinition*,
77 G4double kineticEnergy, 88 G4double kineticEnergy,
78 G4double cutEnergy, 89 G4double cutEnergy,
79 G4double maxEnergy); 90 G4double maxEnergy);
80 91
81 G4double ComputeCrossSectionPerAtom( << 92 virtual G4double ComputeCrossSectionPerAtom(
82 const G4ParticleDefinition*, 93 const G4ParticleDefinition*,
83 G4double kineticEnergy, 94 G4double kineticEnergy,
84 G4double Z, G4double A, 95 G4double Z, G4double A,
85 G4double cutEnergy, 96 G4double cutEnergy,
86 G4double maxEnergy) override; << 97 G4double maxEnergy);
87 98
88 G4double CrossSectionPerVolume(const G4Mater << 99 virtual G4double CrossSectionPerVolume(const G4Material*,
89 const G4ParticleDefinition*, 100 const G4ParticleDefinition*,
90 G4double kineticEnergy, 101 G4double kineticEnergy,
91 G4double cutEnergy, 102 G4double cutEnergy,
92 G4double maxEnergy) override; << 103 G4double maxEnergy);
93 104
94 G4double ComputeDEDXPerVolume(const G4Materi << 105 virtual G4double ComputeDEDXPerVolume(const G4Material*,
95 const G4ParticleDefinition*, << 106 const G4ParticleDefinition*,
96 G4double kineticEnergy, << 107 G4double kineticEnergy,
97 G4double cutEnergy) override; << 108 G4double cutEnergy);
98 << 109
99 G4double GetChargeSquareRatio(const G4Partic << 110 virtual G4double GetChargeSquareRatio(const G4ParticleDefinition* p,
100 const G4Material* mat, << 111 const G4Material* mat,
101 G4double kineticEnergy) override; << 112 G4double kineticEnergy);
102 << 113
103 G4double GetParticleCharge(const G4ParticleD << 114 virtual G4double GetParticleCharge(const G4ParticleDefinition* p,
104 const G4Material* mat, << 115 const G4Material* mat,
105 G4double kineticEnergy) override; << 116 G4double kineticEnergy);
106 << 117
107 void CorrectionsAlongStep(const G4MaterialCu << 118 virtual void CorrectionsAlongStep(const G4MaterialCutsCouple*,
108 const G4DynamicParticle* dp, << 119 const G4DynamicParticle*,
109 const G4double& length, << 120 G4double& eloss,
110 G4double& eloss) override; << 121 G4double& niel,
111 << 122 G4double length);
112 void SampleSecondaries(std::vector<G4Dynamic << 123
113 const G4MaterialCutsCouple*, << 124 virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
114 const G4DynamicParticle*, << 125 const G4MaterialCutsCouple*,
115 G4double tmin, << 126 const G4DynamicParticle*,
116 G4double maxEnergy) override; << 127 G4double tmin,
117 << 128 G4double maxEnergy);
118 // hide assignment operator <<
119 G4BetheBlochModel & operator=(const G4BetheB <<
120 G4BetheBlochModel(const G4BetheBlochModel&) <<
121 129
122 protected: 130 protected:
123 131
124 G4double MaxSecondaryEnergy(const G4Particle << 132 virtual G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
125 G4double kinEnergy) override; << 133 G4double kinEnergy);
>> 134
>> 135 private:
126 136
127 inline G4double GetChargeSquareRatio() const << 137 inline void SetupParameters();
128 138
129 inline void SetChargeSquareRatio(G4double va << 139 inline void SetParticle(const G4ParticleDefinition* p);
130 140
131 private: << 141 inline void SetGenericIon(const G4ParticleDefinition* p);
132 142
133 void SetupParameters(const G4ParticleDefinit << 143 // hide assignment operator
>> 144 G4BetheBlochModel & operator=(const G4BetheBlochModel &right);
>> 145 G4BetheBlochModel(const G4BetheBlochModel&);
134 146
135 const G4ParticleDefinition* particle = nullp << 147 const G4ParticleDefinition* particle;
136 const G4ParticleDefinition* theElectron; << 148 const G4Material* currentMaterial;
>> 149 G4ParticleDefinition* theElectron;
137 G4EmCorrections* corr; 150 G4EmCorrections* corr;
138 G4ParticleChangeForLoss* fParticleChange << 151 G4ParticleChangeForLoss* fParticleChange;
139 G4NistManager* nist; 152 G4NistManager* nist;
140 G4ICRU90StoppingData* fICRU90 = nullpt <<
141 const G4Material* currentMaterial <<
142 const G4Material* baseMaterial = n <<
143 <<
144 G4double mass = 0.0; <<
145 G4double tlimit = DBL_MAX; <<
146 G4double spin = 0.0; <<
147 G4double magMoment2 = 0.0; <<
148 G4double chargeSquare = 1.0; <<
149 G4double ratio = 1.0; <<
150 G4double formfact = 0.0; <<
151 G4double twoln10; <<
152 G4double fAlphaTlimit; <<
153 G4double fProtonTlimit; <<
154 153
155 G4int iICRU90 = -1; << 154 G4double mass;
156 G4bool isIon = false; << 155 G4double tlimit;
157 G4bool isAlpha = false; << 156 G4double spin;
>> 157 G4double magMoment2;
>> 158 G4double chargeSquare;
>> 159 G4double ratio;
>> 160 G4double formfact;
>> 161 G4double twoln10;
>> 162 G4double bg2lim;
>> 163 G4double taulim;
>> 164 G4double corrFactor;
>> 165 G4bool isIon;
>> 166 G4bool isInitialised;
158 }; 167 };
159 168
160 //....oooOO0OOooo........oooOO0OOooo........oo 169 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
161 170
162 inline G4double G4BetheBlochModel::GetChargeSq << 171 inline void G4BetheBlochModel::SetupParameters()
163 { 172 {
164 return chargeSquare; << 173 mass = particle->GetPDGMass();
>> 174 spin = particle->GetPDGSpin();
>> 175 G4double q = particle->GetPDGCharge()/eplus;
>> 176 chargeSquare = q*q;
>> 177 ratio = electron_mass_c2/mass;
>> 178 G4double magmom = particle->GetPDGMagneticMoment()*mass/(0.5*eplus*hbar_Planck*c_squared);
>> 179 magMoment2 = magmom*magmom - 1.0;
>> 180 formfact = 0.0;
>> 181 if(particle->GetLeptonNumber() == 0) {
>> 182 G4double x = 0.8426*GeV;
>> 183 if(spin == 0.0 && mass < GeV) {x = 0.736*GeV;}
>> 184 else if(mass > GeV) {
>> 185 x /= nist->GetZ13(mass/proton_mass_c2);
>> 186 // tlimit = 51.2*GeV*A13[iz]*A13[iz];
>> 187 }
>> 188 formfact = 2.0*electron_mass_c2/(x*x);
>> 189 tlimit = 2.0/formfact;
>> 190 }
165 } 191 }
166 192
167 //....oooOO0OOooo........oooOO0OOooo........oo 193 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
168 194
169 inline void G4BetheBlochModel::SetChargeSquare << 195 inline void G4BetheBlochModel::SetParticle(const G4ParticleDefinition* p)
170 { 196 {
171 chargeSquare = val; << 197 if(particle != p) {
>> 198 particle = p;
>> 199 if (p->GetPDGCharge()/eplus > 1.5 && p->GetBaryonNumber() > 2) isIon = true;
>> 200 SetupParameters();
>> 201 }
172 } 202 }
173 203
174 //....oooOO0OOooo........oooOO0OOooo........oo 204 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 205
>> 206 inline void G4BetheBlochModel::SetGenericIon(const G4ParticleDefinition* p)
>> 207 {
>> 208 if(p && particle != p) {
>> 209 if(p->GetParticleName() == "GenericIon") isIon = true;
>> 210 }
>> 211 }
175 212
176 #endif 213 #endif
177 214