source: trunk/source/processes/electromagnetic/standard/src/G4ionIonisation.cc@ 900

Last change on this file since 900 was 819, checked in by garnier, 17 years ago

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25//
26// $Id: G4ionIonisation.cc,v 1.45.2.2 2008/04/25 00:34:55 vnivanch Exp $
27// GEANT4 tag $Name: geant4-09-01-patch-02 $
28//
29// -------------------------------------------------------------------
30//
31// GEANT4 Class file
32//
33//
34// File name: G4ionIonisation
35//
36// Author: Vladimir Ivanchenko
37//
38// Creation date: 07.05.2002
39//
40// Modifications:
41//
42// 23-12-02 Change interface in order to move to cut per region (V.Ivanchenko)
43// 26-12-02 Secondary production moved to derived classes (V.Ivanchenko)
44// 13-02-03 SubCutoff regime is assigned to a region (V.Ivanchenko)
45// 18-04-03 Use IonFluctuations (V.Ivanchenko)
46// 03-08-03 Add effective charge (V.Ivanchenko)
47// 12-11-03 G4EnergyLossSTD -> G4EnergyLossProcess (V.Ivanchenko)
48// 27-05-04 Set integral to be a default regime (V.Ivanchenko)
49// 08-11-04 Migration to new interface of Store/Retrieve tables (V.Ivantchenko)
50// 08-04-05 Major optimisation of internal interfaces (V.Ivantchenko)
51// 10-01-06 SetStepLimits -> SetStepFunction (V.Ivantchenko)
52// 10-05-06 Add a possibility to download user data (V.Ivantchenko)
53// 13-05-06 Add data for light ion stopping in water (V.Ivantchenko)
54// 14-01-07 use SetEmModel() and SetFluctModel() from G4VEnergyLossProcess (mma)
55// 16-05-07 Add data for light ion stopping only for GenericIon (V.Ivantchenko)
56// 07-11-07 Fill non-ionizing energy loss (V.Ivantchenko)
57//
58//
59// -------------------------------------------------------------------
60//
61//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
62//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
63
64#include "G4ionIonisation.hh"
65#include "G4Electron.hh"
66#include "G4Proton.hh"
67#include "G4GenericIon.hh"
68#include "G4BraggModel.hh"
69#include "G4BraggIonModel.hh"
70#include "G4BetheBlochModel.hh"
71#include "G4IonFluctuations.hh"
72#include "G4UnitsTable.hh"
73#include "G4LossTableManager.hh"
74#include "G4WaterStopping.hh"
75
76//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
77
78using namespace std;
79
80G4ionIonisation::G4ionIonisation(const G4String& name)
81 : G4VEnergyLossProcess(name),
82 theParticle(0),
83 theBaseParticle(0),
84 isInitialised(false),
85 stopDataActive(true),
86 nuclearStopping(true)
87{
88 SetLinearLossLimit(0.15);
89 SetStepFunction(0.1, 0.1*mm);
90 SetIntegral(true);
91 SetVerboseLevel(1);
92 corr = G4LossTableManager::Instance()->EmCorrections();
93}
94
95//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
96
97G4ionIonisation::~G4ionIonisation()
98{}
99
100//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
101
102void G4ionIonisation::InitialiseEnergyLossProcess(
103 const G4ParticleDefinition* part,
104 const G4ParticleDefinition* bpart)
105{
106 if(isInitialised) return;
107
108 theParticle = part;
109
110 if(part == bpart || part == G4GenericIon::GenericIon()) theBaseParticle = 0;
111 else if(bpart == 0) theBaseParticle = G4GenericIon::GenericIon();
112 else theBaseParticle = bpart;
113
114 SetBaseParticle(theBaseParticle);
115 SetSecondaryParticle(G4Electron::Electron());
116
117 if(theBaseParticle) baseMass = theBaseParticle->GetPDGMass();
118 else baseMass = theParticle->GetPDGMass();
119
120 if (!EmModel(1)) SetEmModel(new G4BraggIonModel(),1);
121 EmModel(1)->SetLowEnergyLimit(100*eV);
122 eth = 2.0*MeV;
123 EmModel(1)->SetHighEnergyLimit(eth);
124 if (!FluctModel()) SetFluctModel(new G4IonFluctuations());
125 AddEmModel(1, EmModel(1), FluctModel());
126
127 if (!EmModel(2)) SetEmModel(new G4BetheBlochModel(),2);
128 EmModel(2)->SetLowEnergyLimit(eth);
129 EmModel(2)->SetHighEnergyLimit(100*TeV);
130 AddEmModel(2, EmModel(2), FluctModel());
131
132 // Add ion stoping tables for Generic Ion
133 if(part == G4GenericIon::GenericIon()) {
134 G4WaterStopping ws(corr);
135 effCharge = corr->GetIonEffectiveCharge(EmModel(1));
136 } else {
137 effCharge = corr->GetIonEffectiveCharge(0);
138 }
139
140 isInitialised = true;
141}
142
143//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
144
145void G4ionIonisation::PrintInfo()
146{
147 if(EmModel(1) && EmModel(2))
148 G4cout << " Scaling relation is used from proton dE/dx and range."
149 << "\n Delta cross sections and sampling from "
150 << EmModel(2)->GetName() << " model for scaled energy > "
151 << eth/MeV << " MeV"
152 << "\n Parametrisation from "
153 << EmModel(1)->GetName() << " for protons below."
154 << " NuclearStopping= " << nuclearStopping
155 << G4endl;
156 if (stopDataActive)
157 G4cout << "\n Stopping Power data for "
158 << corr->GetNumberOfStoppingVectors()
159 << " ion/material pairs are used."
160 << G4endl;
161}
162
163//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
164
165void G4ionIonisation::AddStoppingData(G4int Z, G4int A,
166 const G4String& mname,
167 G4PhysicsVector& dVector)
168{
169 corr->AddStoppingData(Z, A, mname, dVector);
170}
171
172//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
173
174void G4ionIonisation::CorrectionsAlongStep(const G4MaterialCutsCouple* couple,
175 const G4DynamicParticle* dp,
176 G4double& eloss,
177 G4double& s)
178{
179 const G4ParticleDefinition* part = dp->GetDefinition();
180 const G4Material* mat = couple->GetMaterial();
181 if(eloss < preKinEnergy) {
182 // G4cout << "e= " << preKinEnergy << " ratio= " << massRatio << " eth= " << eth<< G4endl;
183 if(preKinEnergy*massRatio > eth)
184 eloss += s*corr->HighOrderCorrections(part,mat,preKinEnergy);
185 else {
186
187 if(stopDataActive)
188 eloss *= corr->EffectiveChargeCorrection(part,mat,preKinEnergy);
189
190 }
191 fParticleChange.SetProposedCharge(effCharge->EffectiveCharge(part,
192 mat,preKinEnergy-eloss));
193 }
194 if(nuclearStopping && preKinEnergy*massRatio < 50.*eth*charge2) {
195 G4double nloss = s*corr->NuclearDEDX(part,mat,preKinEnergy - eloss*0.5);
196 eloss += nloss;
197 // G4cout << "G4ionIonisation::CorrectionsAlongStep: e= " << preKinEnergy
198 // << " de= " << eloss << " NIEL= " << nloss << G4endl;
199 fParticleChange.ProposeNonIonizingEnergyDeposit(nloss);
200 }
201}
202
203//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
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