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25 // 22 //
>> 23 // $Id: G4ionIonisation.hh,v 1.38 2005/05/12 11:06:43 vnivanch Exp $
>> 24 // GEANT4 tag $Name: geant4-07-01-patch-01 $
26 // 25 //
27 // ------------------------------------------- 26 // -------------------------------------------------------------------
28 // 27 //
29 // GEANT4 Class header file 28 // GEANT4 Class header file
30 // 29 //
31 // 30 //
32 // File name: G4ionIonisation 31 // File name: G4ionIonisation
33 // 32 //
34 // Author: Vladimir Ivanchenko 33 // Author: Vladimir Ivanchenko
35 // 34 //
36 // Creation date: 07.05.2002 35 // Creation date: 07.05.2002
37 // 36 //
38 // Modifications: 37 // Modifications:
39 // 38 //
40 // 26-12-02 Secondary production moved to deri 39 // 26-12-02 Secondary production moved to derived classes (VI)
41 // 24-01-03 Make models region aware (V.Ivanch 40 // 24-01-03 Make models region aware (V.Ivanchenko)
42 // 05-02-03 Fix compilation warnings (V.Ivanch 41 // 05-02-03 Fix compilation warnings (V.Ivanchenko)
43 // 13-02-03 SubCutoff regime is assigned to a 42 // 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko)
44 // 15-02-03 Add control on delta pointer (V.Iv 43 // 15-02-03 Add control on delta pointer (V.Ivanchenko)
45 // 23-05-03 Add fluctuation model as a member 44 // 23-05-03 Add fluctuation model as a member function (V.Ivanchenko)
46 // 03-08-03 Add effective charge and saturatio 45 // 03-08-03 Add effective charge and saturation of tmax (V.Ivanchenko)
47 // 12-11-03 Fix problem of negative effective 46 // 12-11-03 Fix problem of negative effective charge (V.Ivanchenko)
48 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossPro 47 // 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
49 // 21-01-04 Migrade to G4ParticleChangeForLoss 48 // 21-01-04 Migrade to G4ParticleChangeForLoss (V.Ivanchenko)
50 // 08-11-04 Migration to new interface of Stor 49 // 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
51 // 08-04-05 Major optimisation of internal int 50 // 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
52 // 11-04-05 Move MaxSecondary energy to model 51 // 11-04-05 Move MaxSecondary energy to model (V.Ivanchneko)
53 // 11-04-04 Move MaxSecondaryEnergy to models 52 // 11-04-04 Move MaxSecondaryEnergy to models (V.Ivanchenko)
54 // 10-05-06 Add a possibility to download user <<
55 // 22-07-06 Remove obsolete method (V.Ivantche <<
56 // 07-11-07 Moved CorrectionsAlongStep to cc ( <<
57 // 12-09-08 Removed InitialiseMassCharge and C <<
58 // 53 //
59 // Class Description: 54 // Class Description:
60 // 55 //
61 // This class manages the ionisation process f << 56 // This class manages the ionisation process for ions.
62 // nuclear stopping power, energy loss correct << 57 // it inherites from G4VContinuousDiscreteProcess via G4VEnergyLoss.
63 // It inherites from G4VEnergyLossLoss. <<
64 // 58 //
65 59
66 // ------------------------------------------- 60 // -------------------------------------------------------------------
67 // 61 //
68 62
69 #ifndef G4ionIonisation_h 63 #ifndef G4ionIonisation_h
70 #define G4ionIonisation_h 1 64 #define G4ionIonisation_h 1
71 65
72 #include "G4VEnergyLossProcess.hh" 66 #include "G4VEnergyLossProcess.hh"
>> 67 #include "G4ionEffectiveCharge.hh"
>> 68 #include "G4VEmModel.hh"
>> 69 #include "G4EmCorrections.hh"
73 70
74 class G4Material; 71 class G4Material;
>> 72 class G4VEmFluctuationModel;
75 73
76 class G4ionIonisation : public G4VEnergyLossPr 74 class G4ionIonisation : public G4VEnergyLossProcess
77 { 75 {
78 public: 76 public:
79 77
80 explicit G4ionIonisation(const G4String& nam << 78 G4ionIonisation(const G4String& name = "ionIoni");
81 79
82 ~G4ionIonisation() override = default; << 80 virtual ~G4ionIonisation();
83 81
84 G4bool IsApplicable(const G4ParticleDefiniti << 82 G4bool IsApplicable(const G4ParticleDefinition& p);
85 83
86 void AddStoppingData(G4int Z, G4int A, const << 84 // Print out of the class parameters
87 G4PhysicsVector* dVector); << 85 virtual void PrintInfo();
88 <<
89 void ActivateStoppingData(G4bool); <<
90 <<
91 // print documentation in html format <<
92 void ProcessDescription(std::ostream&) const <<
93 <<
94 // hide assignment operator <<
95 G4ionIonisation & operator=(const G4ionIonis <<
96 G4ionIonisation(const G4ionIonisation&) = de <<
97 86
98 protected: 87 protected:
99 88
>> 89 void CorrectionsAlongStep(
>> 90 const G4MaterialCutsCouple*,
>> 91 const G4DynamicParticle*,
>> 92 G4double& eloss,
>> 93 G4double& length);
>> 94
>> 95 virtual std::vector<G4DynamicParticle*>* SecondariesPostStep(
>> 96 G4VEmModel*,
>> 97 const G4MaterialCutsCouple*,
>> 98 const G4DynamicParticle*,
>> 99 G4double&);
>> 100
100 void InitialiseEnergyLossProcess(const G4Par 101 void InitialiseEnergyLossProcess(const G4ParticleDefinition*,
101 const G4ParticleDefinition*) overri << 102 const G4ParticleDefinition*);
102 103
103 G4double MinPrimaryEnergy(const G4ParticleDe << 104 G4double GetMeanFreePath(const G4Track& track,
104 const G4Material*, G4double cut) fin << 105 G4double previousStepSize,
>> 106 G4ForceCondition* condition);
105 107
106 inline G4double BetheBlochEnergyThreshold(); << 108 virtual G4double MinPrimaryEnergy(const G4ParticleDefinition* p,
>> 109 const G4Material*, G4double cut);
107 110
108 private: 111 private:
109 112
>> 113 // hide assignment operator
>> 114 G4ionIonisation & operator=(const G4ionIonisation &right);
>> 115 G4ionIonisation(const G4ionIonisation&);
110 116
111 const G4ParticleDefinition* theParticle = nu << 117 G4ionEffectiveCharge effCharge;
112 G4double eth; << 118 G4VEmFluctuationModel* flucModel;
>> 119 G4EmCorrections* corr;
>> 120
>> 121 // cash
>> 122 const G4Material* theMaterial;
>> 123 const G4ParticleDefinition* currentParticle;
>> 124 const G4ParticleDefinition* theParticle;
>> 125 const G4ParticleDefinition* theBaseParticle;
>> 126
>> 127 G4double preKinEnergy;
>> 128
>> 129 G4double eth;
>> 130 G4double baseMass;
>> 131 G4double massRatio;
113 132
114 G4bool isInitialised = false; << 133 G4bool isInitialised;
115 }; 134 };
116 135
117 //....oooOO0OOooo........oooOO0OOooo........oo 136 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 137 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 138
>> 139 inline G4bool G4ionIonisation::IsApplicable(const G4ParticleDefinition& p)
>> 140 {
>> 141 return (p.GetPDGCharge() != 0.0 && !p.IsShortLived() &&
>> 142 p.GetParticleType() == "nucleus");
>> 143 }
>> 144
>> 145 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 146
>> 147 inline G4double G4ionIonisation::MinPrimaryEnergy(
>> 148 const G4ParticleDefinition*, const G4Material*, G4double cut)
>> 149 {
>> 150 G4double x = 0.5*cut/electron_mass_c2;
>> 151 G4double g = std::sqrt(1. + x);
>> 152 return proton_mass_c2*(g - 1.0);
>> 153 }
>> 154
>> 155 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 156
>> 157
>> 158 inline G4double G4ionIonisation::GetMeanFreePath(const G4Track& track,
>> 159 G4double,
>> 160 G4ForceCondition* cond)
>> 161 {
>> 162
>> 163 currentParticle = track.GetDefinition();
>> 164 theMaterial = track.GetMaterial();
>> 165 preKinEnergy = track.GetKineticEnergy();
>> 166 massRatio = baseMass/track.GetDynamicParticle()->GetMass();
>> 167
>> 168 G4double q_2 = effCharge.EffectiveChargeSquareRatio(currentParticle,theMaterial,
>> 169 preKinEnergy);
>> 170 SetMassRatio(massRatio);
>> 171 SetReduceFactor(1.0/(q_2*massRatio));
>> 172 SetChargeSquare(q_2);
>> 173 SetChargeSquareRatio(q_2);
>> 174
>> 175 return G4VEnergyLossProcess::GetMeanFreePath(track, 0.0, cond);
>> 176 }
>> 177
>> 178 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 179
>> 180 inline void G4ionIonisation::CorrectionsAlongStep(
>> 181 const G4MaterialCutsCouple*,
>> 182 const G4DynamicParticle*,
>> 183 G4double& eloss,
>> 184 G4double& s)
>> 185 {
>> 186 if(eloss < preKinEnergy) {
>> 187 if(preKinEnergy*massRatio > eth)
>> 188 eloss += s*corr->HighOrderCorrections(currentParticle,theMaterial,preKinEnergy);
>> 189 else
>> 190 eloss += s*corr->NuclearDEDX(currentParticle,theMaterial,preKinEnergy - eloss*0.5);
>> 191 fParticleChange.SetProposedCharge(effCharge.EffectiveCharge(currentParticle,
>> 192 theMaterial,preKinEnergy-eloss));
>> 193 }
>> 194 }
>> 195
>> 196 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
118 197
119 inline G4double G4ionIonisation::BetheBlochEne << 198 inline std::vector<G4DynamicParticle*>* G4ionIonisation::SecondariesPostStep(
>> 199 G4VEmModel* model,
>> 200 const G4MaterialCutsCouple* couple,
>> 201 const G4DynamicParticle* dp,
>> 202 G4double& tcut)
120 { 203 {
121 return eth; << 204 return model->SampleSecondaries(couple, dp, tcut);
122 } 205 }
123 206
124 //....oooOO0OOooo........oooOO0OOooo........oo 207 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
125 208
126 #endif 209 #endif
127 210