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25 // 25 //
>> 26 // $Id: G4BetheBlochModel.hh,v 1.16 2008/10/22 16:00:57 vnivanch Exp $
>> 27 // GEANT4 tag $Name: geant4-09-02 $
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"
54 66
55 class G4EmCorrections; 67 class G4EmCorrections;
56 class G4ParticleChangeForLoss; 68 class G4ParticleChangeForLoss;
57 class G4ICRU90StoppingData; <<
58 class G4NistManager; 69 class G4NistManager;
59 70
>> 71
60 class G4BetheBlochModel : public G4VEmModel 72 class G4BetheBlochModel : public G4VEmModel
61 { 73 {
62 74
63 public: 75 public:
64 76
65 explicit G4BetheBlochModel(const G4ParticleD << 77 G4BetheBlochModel(const G4ParticleDefinition* p = 0,
66 const G4String& nam = "BetheBloch") << 78 const G4String& nam = "BetheBloch");
67 79
68 ~G4BetheBlochModel() override; << 80 virtual ~G4BetheBlochModel();
69 81
70 void Initialise(const G4ParticleDefinition*, << 82 virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
71 83
72 G4double MinEnergyCut(const G4ParticleDefini 84 G4double MinEnergyCut(const G4ParticleDefinition*,
73 const G4MaterialCutsCouple* couple) over << 85 const G4MaterialCutsCouple*);
74 << 86
75 virtual G4double ComputeCrossSectionPerElect 87 virtual G4double ComputeCrossSectionPerElectron(
76 const G4ParticleDefinition*, 88 const G4ParticleDefinition*,
77 G4double kineticEnergy, 89 G4double kineticEnergy,
78 G4double cutEnergy, 90 G4double cutEnergy,
79 G4double maxEnergy); 91 G4double maxEnergy);
80 92
81 G4double ComputeCrossSectionPerAtom( << 93 virtual G4double ComputeCrossSectionPerAtom(
82 const G4ParticleDefinition*, 94 const G4ParticleDefinition*,
83 G4double kineticEnergy, 95 G4double kineticEnergy,
84 G4double Z, G4double A, 96 G4double Z, G4double A,
85 G4double cutEnergy, 97 G4double cutEnergy,
86 G4double maxEnergy) override; << 98 G4double maxEnergy);
87 99
88 G4double CrossSectionPerVolume(const G4Mater << 100 virtual G4double CrossSectionPerVolume(const G4Material*,
89 const G4ParticleDefinition*, 101 const G4ParticleDefinition*,
90 G4double kineticEnergy, 102 G4double kineticEnergy,
91 G4double cutEnergy, 103 G4double cutEnergy,
92 G4double maxEnergy) override; << 104 G4double maxEnergy);
93 105
94 G4double ComputeDEDXPerVolume(const G4Materi << 106 virtual G4double ComputeDEDXPerVolume(const G4Material*,
95 const G4ParticleDefinition*, << 107 const G4ParticleDefinition*,
96 G4double kineticEnergy, << 108 G4double kineticEnergy,
97 G4double cutEnergy) override; << 109 G4double cutEnergy);
98 << 110
99 G4double GetChargeSquareRatio(const G4Partic << 111 virtual G4double GetChargeSquareRatio(const G4ParticleDefinition* p,
100 const G4Material* mat, << 112 const G4Material* mat,
101 G4double kineticEnergy) override; << 113 G4double kineticEnergy);
102 << 114
103 G4double GetParticleCharge(const G4ParticleD << 115 virtual G4double GetParticleCharge(const G4ParticleDefinition* p,
104 const G4Material* mat, << 116 const G4Material* mat,
105 G4double kineticEnergy) override; << 117 G4double kineticEnergy);
106 << 118
107 void CorrectionsAlongStep(const G4MaterialCu << 119 virtual void CorrectionsAlongStep(const G4MaterialCutsCouple*,
108 const G4DynamicParticle* dp, << 120 const G4DynamicParticle*,
109 const G4double& length, << 121 G4double& eloss,
110 G4double& eloss) override; << 122 G4double& niel,
111 << 123 G4double length);
112 void SampleSecondaries(std::vector<G4Dynamic << 124
113 const G4MaterialCutsCouple*, << 125 virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
114 const G4DynamicParticle*, << 126 const G4MaterialCutsCouple*,
115 G4double tmin, << 127 const G4DynamicParticle*,
116 G4double maxEnergy) override; << 128 G4double tmin,
117 << 129 G4double maxEnergy);
118 // hide assignment operator <<
119 G4BetheBlochModel & operator=(const G4BetheB <<
120 G4BetheBlochModel(const G4BetheBlochModel&) <<
121 130
122 protected: 131 protected:
123 132
124 G4double MaxSecondaryEnergy(const G4Particle 133 G4double MaxSecondaryEnergy(const G4ParticleDefinition*,
125 G4double kinEnergy) override; << 134 G4double kinEnergy);
126 <<
127 inline G4double GetChargeSquareRatio() const <<
128 <<
129 inline void SetChargeSquareRatio(G4double va <<
130 135
131 private: 136 private:
132 137
133 void SetupParameters(const G4ParticleDefinit << 138 void SetParticle(const G4ParticleDefinition* p);
>> 139
>> 140 // hide assignment operator
>> 141 G4BetheBlochModel & operator=(const G4BetheBlochModel &right);
>> 142 G4BetheBlochModel(const G4BetheBlochModel&);
134 143
135 const G4ParticleDefinition* particle = nullp << 144 const G4ParticleDefinition* particle;
136 const G4ParticleDefinition* theElectron; << 145 const G4Material* currentMaterial;
>> 146 G4ParticleDefinition* theElectron;
137 G4EmCorrections* corr; 147 G4EmCorrections* corr;
138 G4ParticleChangeForLoss* fParticleChange << 148 G4ParticleChangeForLoss* fParticleChange;
139 G4NistManager* nist; 149 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; <<
154 150
155 G4int iICRU90 = -1; << 151 G4double mass;
156 G4bool isIon = false; << 152 G4double tlimit;
157 G4bool isAlpha = false; << 153 G4double spin;
>> 154 G4double magMoment2;
>> 155 G4double chargeSquare;
>> 156 G4double ratio;
>> 157 G4double formfact;
>> 158 G4double twoln10;
>> 159 G4double bg2lim;
>> 160 G4double taulim;
>> 161 G4double corrFactor;
>> 162 G4bool isIon;
>> 163 G4bool isInitialised;
158 }; 164 };
159 165
160 //....oooOO0OOooo........oooOO0OOooo........oo 166 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
161 167
162 inline G4double G4BetheBlochModel::GetChargeSq << 168 inline G4double G4BetheBlochModel::MaxSecondaryEnergy(
163 { << 169 const G4ParticleDefinition* pd,
164 return chargeSquare; << 170 G4double kinEnergy)
165 } <<
166 <<
167 //....oooOO0OOooo........oooOO0OOooo........oo <<
168 <<
169 inline void G4BetheBlochModel::SetChargeSquare <<
170 { 171 {
171 chargeSquare = val; << 172 if(isIon) SetParticle(pd);
>> 173 G4double tau = kinEnergy/mass;
>> 174 G4double tmax = 2.0*electron_mass_c2*tau*(tau + 2.) /
>> 175 (1. + 2.0*(tau + 1.)*ratio + ratio*ratio);
>> 176 return std::min(tmax,tlimit);
172 } 177 }
173 178
174 //....oooOO0OOooo........oooOO0OOooo........oo 179 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
175 180
176 #endif 181 #endif
177 182