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25 // 22 //
>> 23 // $Id: G4ionIonisation.hh,v 1.33 2004/12/01 19:37:13 vnivanch Exp $
>> 24 // GEANT4 tag $Name: geant4-07-00-cand-03 $
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 <<
52 // 11-04-05 Move MaxSecondary energy to model <<
53 // 11-04-04 Move MaxSecondaryEnergy to models <<
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 // 50 //
59 // Class Description: 51 // Class Description:
60 // 52 //
61 // This class manages the ionisation process f << 53 // This class manages the ionisation process for ions.
62 // nuclear stopping power, energy loss correct << 54 // it inherites from G4VContinuousDiscreteProcess via G4VEnergyLoss.
63 // It inherites from G4VEnergyLossLoss. <<
64 // 55 //
65 56
66 // ------------------------------------------- 57 // -------------------------------------------------------------------
67 // 58 //
68 59
69 #ifndef G4ionIonisation_h 60 #ifndef G4ionIonisation_h
70 #define G4ionIonisation_h 1 61 #define G4ionIonisation_h 1
71 62
72 #include "G4VEnergyLossProcess.hh" 63 #include "G4VEnergyLossProcess.hh"
>> 64 #include "G4ionEffectiveCharge.hh"
73 65
74 class G4Material; 66 class G4Material;
>> 67 class G4VEmFluctuationModel;
75 68
76 class G4ionIonisation : public G4VEnergyLossPr 69 class G4ionIonisation : public G4VEnergyLossProcess
77 { 70 {
>> 71
78 public: 72 public:
79 73
80 explicit G4ionIonisation(const G4String& nam << 74 G4ionIonisation(const G4String& name = "ionIoni");
81 75
82 ~G4ionIonisation() override = default; << 76 virtual ~G4ionIonisation();
83 77
84 G4bool IsApplicable(const G4ParticleDefiniti << 78 G4bool IsApplicable(const G4ParticleDefinition& p);
85 79
86 void AddStoppingData(G4int Z, G4int A, const << 80 virtual G4double MinPrimaryEnergy(const G4ParticleDefinition* p,
87 G4PhysicsVector* dVector); << 81 const G4Material*, G4double cut);
88 82
89 void ActivateStoppingData(G4bool); << 83 virtual std::vector<G4Track*>* SecondariesAlongStep(
>> 84 const G4Step&,
>> 85 G4double&,
>> 86 G4double&,
>> 87 G4double&);
90 88
91 // print documentation in html format << 89 virtual void SecondariesPostStep(
92 void ProcessDescription(std::ostream&) const << 90 G4VEmModel*,
>> 91 const G4MaterialCutsCouple*,
>> 92 const G4DynamicParticle*,
>> 93 G4double&,
>> 94 G4double&);
93 95
94 // hide assignment operator << 96 void SetSubCutoff(G4bool val);
95 G4ionIonisation & operator=(const G4ionIonis << 97
96 G4ionIonisation(const G4ionIonisation&) = de << 98 void PrintInfoDefinition();
>> 99 // Print out of the class parameters
97 100
98 protected: 101 protected:
99 102
100 void InitialiseEnergyLossProcess(const G4Par << 103 virtual void InitialiseEnergyLossProcess(const G4ParticleDefinition*,
101 const G4ParticleDefinition*) overri << 104 const G4ParticleDefinition*);
102 105
103 G4double MinPrimaryEnergy(const G4ParticleDe << 106 virtual G4double GetMeanFreePath(const G4Track& track,
104 const G4Material*, G4double cut) fin << 107 G4double previousStepSize,
>> 108 G4ForceCondition* condition);
105 109
106 inline G4double BetheBlochEnergyThreshold(); << 110 virtual G4double MaxSecondaryEnergy(const G4DynamicParticle* dynParticle);
107 111
108 private: 112 private:
109 113
>> 114 // hide assignment operator
>> 115 G4ionIonisation & operator=(const G4ionIonisation &right);
>> 116 G4ionIonisation(const G4ionIonisation&);
>> 117
>> 118 G4ionEffectiveCharge effCharge;
110 119
111 const G4ParticleDefinition* theParticle = nu << 120 // cash
112 G4double eth; << 121 const G4Material* theMaterial;
>> 122 const G4ParticleDefinition* currentParticle;
>> 123 const G4ParticleDefinition* theParticle;
>> 124 const G4ParticleDefinition* theBaseParticle;
>> 125 G4VEmFluctuationModel* flucModel;
113 126
114 G4bool isInitialised = false; << 127 G4bool isInitialised;
>> 128 G4bool subCutoff;
115 }; 129 };
116 130
117 //....oooOO0OOooo........oooOO0OOooo........oo 131 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 132 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 133
>> 134 inline G4bool G4ionIonisation::IsApplicable(const G4ParticleDefinition& p)
>> 135 {
>> 136 return (p.GetPDGCharge() != 0.0 && !p.IsShortLived() && p.GetParticleType() == "nucleus");
>> 137 }
>> 138
>> 139 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 140
>> 141 inline G4double G4ionIonisation::MinPrimaryEnergy(
>> 142 const G4ParticleDefinition*, const G4Material*, G4double cut)
>> 143 {
>> 144 G4double x = 0.5*cut/electron_mass_c2;
>> 145 G4double g = std::sqrt(1. + x);
>> 146 return proton_mass_c2*(g - 1.0);
>> 147 }
>> 148
>> 149 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 150
>> 151 inline G4double G4ionIonisation::MaxSecondaryEnergy(const G4DynamicParticle* dynParticle)
>> 152 {
>> 153 G4double mass = dynParticle->GetMass();
>> 154 G4double gamma = dynParticle->GetKineticEnergy()/mass + 1.0;
>> 155 G4double tmax = electron_mass_c2*std::min(2.0*(gamma*gamma - 1.),
>> 156 51200.*std::pow(proton_mass_c2/mass,0.66667));
>> 157 return tmax;
>> 158 }
>> 159
>> 160 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 161
>> 162
>> 163 inline G4double G4ionIonisation::GetMeanFreePath(const G4Track& track,
>> 164 G4double,
>> 165 G4ForceCondition* cond)
>> 166 {
>> 167
>> 168 currentParticle = track.GetDefinition();
>> 169 theMaterial = track.GetMaterial();
>> 170 G4double q_2 = effCharge.EffectiveChargeSquareRatio(currentParticle,theMaterial,
>> 171 track.GetKineticEnergy());
>> 172 G4double mRatio = proton_mass_c2/track.GetDynamicParticle()->GetMass();
>> 173
>> 174 SetMassRatio(mRatio);
>> 175 SetReduceFactor(1.0/(q_2*mRatio));
>> 176 SetChargeSquare(q_2);
>> 177 SetChargeSquareRatio(q_2);
>> 178
>> 179 return G4VEnergyLossProcess::GetMeanFreePath(track, 0.0, cond);
>> 180 }
>> 181
>> 182 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 183
>> 184 #include "G4VSubCutoffProcessor.hh"
>> 185
>> 186 inline std::vector<G4Track*>* G4ionIonisation::SecondariesAlongStep(
>> 187 const G4Step& step,
>> 188 G4double& tmax,
>> 189 G4double& eloss,
>> 190 G4double& scaledEnergy)
>> 191 {
>> 192 std::vector<G4Track*>* newp = 0;
>> 193 G4double e = step.GetTrack()->GetKineticEnergy() - eloss;
>> 194 fParticleChange.SetProposedCharge(effCharge.EffectiveCharge(currentParticle,theMaterial,e));
>> 195 if(subCutoff) {
>> 196 G4VSubCutoffProcessor* sp = SubCutoffProcessor(CurrentMaterialCutsCoupleIndex());
>> 197 if (sp) {
>> 198 G4VEmModel* model = SelectModel(scaledEnergy);
>> 199 newp = sp->SampleSecondaries(step,tmax,eloss,model);
>> 200 }
>> 201 }
>> 202 return newp;
>> 203 }
>> 204
>> 205 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 206
>> 207 #include "G4VEmModel.hh"
118 208
119 inline G4double G4ionIonisation::BetheBlochEne << 209 inline void G4ionIonisation::SecondariesPostStep(
>> 210 G4VEmModel* model,
>> 211 const G4MaterialCutsCouple* couple,
>> 212 const G4DynamicParticle* dp,
>> 213 G4double& tcut,
>> 214 G4double& kinEnergy)
120 { 215 {
121 return eth; << 216 G4DynamicParticle* delta = model->SampleSecondary(couple, dp, tcut, kinEnergy);
>> 217 if(delta) {
>> 218 fParticleChange.SetNumberOfSecondaries(1);
>> 219 fParticleChange.AddSecondary(delta);
>> 220 G4ThreeVector finalP = dp->GetMomentum();
>> 221 kinEnergy -= delta->GetKineticEnergy();
>> 222 fParticleChange.SetProposedCharge(effCharge.EffectiveCharge(currentParticle,theMaterial,kinEnergy));
>> 223 finalP -= delta->GetMomentum();
>> 224 finalP = finalP.unit();
>> 225 fParticleChange.SetProposedMomentumDirection(finalP);
>> 226 }
122 } 227 }
123 228
124 //....oooOO0OOooo........oooOO0OOooo........oo 229 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
125 230
126 #endif 231 #endif
127 232