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25 // 25 //
>> 26 // $Id: G4ElectronIonPair.cc,v 1.2 2008/10/17 14:46:16 vnivanch Exp $
>> 27 // GEANT4 tag $Name: geant4-09-02-patch-04 $
26 // 28 //
27 // ------------------------------------------- 29 // -------------------------------------------------------------------
28 // 30 //
29 // GEANT4 Class file 31 // GEANT4 Class file
30 // 32 //
31 // 33 //
32 // File name: G4ElectronIonPair 34 // File name: G4ElectronIonPair
33 // 35 //
34 // Author: Vladimir Ivanchenko 36 // Author: Vladimir Ivanchenko
35 // 37 //
36 // Creation date: 08.07.2008 38 // Creation date: 08.07.2008
37 // 39 //
38 // Modifications: 40 // Modifications:
39 // 41 //
40 // ------------------------------------------- 42 // -------------------------------------------------------------
41 43
42 //....oooOO0OOooo........oooOO0OOooo........oo 44 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
43 //....oooOO0OOooo........oooOO0OOooo........oo 45 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
44 46
45 #include "G4ElectronIonPair.hh" 47 #include "G4ElectronIonPair.hh"
46 #include "G4SystemOfUnits.hh" << 48 #include "G4Gamma.hh"
47 #include "G4Material.hh" 49 #include "G4Material.hh"
48 #include "G4MaterialTable.hh" 50 #include "G4MaterialTable.hh"
49 #include "G4StepPoint.hh" 51 #include "G4StepPoint.hh"
50 #include "G4VProcess.hh" 52 #include "G4VProcess.hh"
51 #include "G4ProcessType.hh" 53 #include "G4ProcessType.hh"
52 #include "G4Track.hh" 54 #include "G4Track.hh"
53 #include "Randomize.hh" 55 #include "Randomize.hh"
54 56
55 //....oooOO0OOooo........oooOO0OOooo........oo 57 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
56 58
57 G4ElectronIonPair::G4ElectronIonPair(G4int ver << 59 G4ElectronIonPair::G4ElectronIonPair()
58 { 60 {
59 verbose = verb; << 61 verbose = 1;
60 curMaterial = nullptr; << 62 curMaterial = 0;
61 curMeanEnergy = 0.0; 63 curMeanEnergy = 0.0;
62 nMaterials = 0; 64 nMaterials = 0;
63 invFanoFactor = 1.0/0.2; <<
64 Initialise(); 65 Initialise();
65 } 66 }
66 67
67 //....oooOO0OOooo........oooOO0OOooo........oo 68 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
68 69
69 G4ElectronIonPair::~G4ElectronIonPair() = defa << 70 G4ElectronIonPair::~G4ElectronIonPair()
>> 71 {}
70 72
71 //....oooOO0OOooo........oooOO0OOooo........oo 73 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
72 74
73 G4double G4ElectronIonPair::MeanNumberOfIonsAl 75 G4double G4ElectronIonPair::MeanNumberOfIonsAlongStep(
74 const G4ParticleDefinition* part, 76 const G4ParticleDefinition* part,
75 const G4Material* material, 77 const G4Material* material,
76 G4double edep, 78 G4double edep,
77 G4double niel) 79 G4double niel)
78 { 80 {
79 G4double nion = 0.0; 81 G4double nion = 0.0;
80 82
81 // NIEL does not provide ionisation clusters 83 // NIEL does not provide ionisation clusters
82 if(edep > niel) { 84 if(edep > niel) {
83 85
84 // neutral particles do not produce ionisa 86 // neutral particles do not produce ionisation along step
85 if(part->GetPDGCharge() != 0.0) { 87 if(part->GetPDGCharge() != 0.0) {
86 88
87 // select material 89 // select material
88 if(material != curMaterial) { 90 if(material != curMaterial) {
89 curMaterial = material; 91 curMaterial = material;
90 curMeanEnergy = material->GetIonisation()->G 92 curMeanEnergy = material->GetIonisation()->GetMeanEnergyPerIonPair();
91 93
92 // if mean energy is not defined then look i 94 // if mean energy is not defined then look into G4 DB
93 if(0.0 == curMeanEnergy) { 95 if(0.0 == curMeanEnergy) {
94 curMeanEnergy = FindG4MeanEnergyPerIonPair 96 curMeanEnergy = FindG4MeanEnergyPerIonPair(material);
95 } 97 }
96 } 98 }
97 if(curMeanEnergy > 0.0) { nion = (edep - << 99 if(curMeanEnergy > 0.0) nion = (edep - niel)/curMeanEnergy;
98 } 100 }
99 } 101 }
100 return nion; 102 return nion;
101 } 103 }
102 104
103 //....oooOO0OOooo........oooOO0OOooo........oo 105 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
104 106
105 std::vector<G4ThreeVector>* 107 std::vector<G4ThreeVector>*
106 G4ElectronIonPair::SampleIonsAlongStep(const G << 108 G4ElectronIonPair::SampleIonsAlongStep(const G4ThreeVector& prePos,
>> 109 const G4ThreeVector& postPos,
>> 110 G4double meanion)
107 { 111 {
108 std::vector<G4ThreeVector>* v = nullptr; << 112 std::vector<G4ThreeVector>* v = new std::vector<G4ThreeVector>;
109 113
110 G4int nion = SampleNumberOfIonsAlongStep(ste << 114 G4double sig = 0.2*std::sqrt(meanion);
>> 115 G4int nion = G4int(G4RandGauss::shoot(meanion,sig) + 0.5);
111 116
112 // sample ionisation along step 117 // sample ionisation along step
113 if(nion > 0) { 118 if(nion > 0) {
114 119
115 v = new std::vector<G4ThreeVector>; << 120 G4ThreeVector deltaPos = postPos - prePos;
116 G4ThreeVector prePos = step->GetPreStepPoi << 121 for(G4int i=0; i<nion; i++) {
117 G4ThreeVector deltaPos = step->GetPostStep <<
118 for(G4int i=0; i<nion; ++i) { <<
119 v->push_back( prePos + deltaPos*G4Unifor 122 v->push_back( prePos + deltaPos*G4UniformRand() );
120 } 123 }
121 if(verbose > 1 ) { 124 if(verbose > 1 ) {
122 G4cout << "### G4ElectronIonPair::Sample 125 G4cout << "### G4ElectronIonPair::SampleIonisationPoints: "
123 << v->size() << " ion pairs are added" 126 << v->size() << " ion pairs are added" << G4endl;
124 } 127 }
125 } 128 }
126 return v; 129 return v;
127 } 130 }
128 131
129 //....oooOO0OOooo........oooOO0OOooo........oo 132 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
130 133
131 G4int << 134 G4int G4ElectronIonPair::ResidualeChargePostStep(const G4ParticleDefinition*,
132 G4ElectronIonPair::ResidualeChargePostStep(con << 135 const G4TrackVector*,
133 const G4TrackVector*, << 136 G4int subType)
134 G4int subType) const <<
135 { 137 {
136 G4int nholes = 0; 138 G4int nholes = 0;
137 139
138 if(2 == subType || 12 == subType || 13 == su << 140 if(2 == subType || 12 == subType || 13 == subType) nholes = 1;
139 return nholes; 141 return nholes;
140 } 142 }
141 143
142 //....oooOO0OOooo........oooOO0OOooo........oo 144 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
143 145
144 G4double << 146 G4double G4ElectronIonPair::FindG4MeanEnergyPerIonPair(const G4Material* mat)
145 G4ElectronIonPair::FindG4MeanEnergyPerIonPair( <<
146 { 147 {
147 G4String name = mat->GetName(); 148 G4String name = mat->GetName();
148 G4double res = 0.0; 149 G4double res = 0.0;
149 150
150 // is this material in the vector? 151 // is this material in the vector?
151 for(G4int j=0; j<nMaterials; ++j) { << 152 for(G4int j=0; j<nMaterials; j++) {
152 if(name == g4MatNames[j]) { 153 if(name == g4MatNames[j]) {
153 res = g4MatData[j]; 154 res = g4MatData[j];
154 mat->GetIonisation()->SetMeanEnergyPerIo 155 mat->GetIonisation()->SetMeanEnergyPerIonPair(res);
155 if(verbose > 0) { 156 if(verbose > 0) {
156 G4cout << "### G4ElectronIonPair::FindG4Mean 157 G4cout << "### G4ElectronIonPair::FindG4MeanEnergyPerIonPair for "
157 << name << " Epair= " << res/eV << " 158 << name << " Epair= " << res/eV << " eV is set"
158 << G4endl; 159 << G4endl;
159 } 160 }
160 break; 161 break;
161 } 162 }
162 } 163 }
163 return res; 164 return res;
164 } 165 }
165 166
166 //....oooOO0OOooo........oooOO0OOooo........oo 167 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
167 168
168 void G4ElectronIonPair:: DumpMeanEnergyPerIonP << 169 void G4ElectronIonPair:: DumpMeanEnergyPerIonPair()
169 { 170 {
170 std::size_t nmat = G4Material::GetNumberOfMa << 171 G4int nmat = G4Material::GetNumberOfMaterials();
171 const G4MaterialTable* mtable = G4Material:: 172 const G4MaterialTable* mtable = G4Material::GetMaterialTable();
172 if(nmat > 0) { 173 if(nmat > 0) {
173 G4cout << "### G4ElectronIonPair: mean ene << 174 G4cout << "### G4ElectronIonPair: mean energy per ion pair avalable:" << G4endl;
174 << G4endl; << 175 for(G4int i=0; i<nmat; i++) {
175 for(std::size_t i=0; i<nmat; ++i) { <<
176 const G4Material* mat = (*mtable)[i]; 176 const G4Material* mat = (*mtable)[i];
177 G4double x = mat->GetIonisation()->GetMe 177 G4double x = mat->GetIonisation()->GetMeanEnergyPerIonPair();
178 if(x > 0.0) { 178 if(x > 0.0) {
179 G4cout << " " << mat->GetName() << " Epa 179 G4cout << " " << mat->GetName() << " Epair= "
180 << x/eV << " eV" << G4endl; 180 << x/eV << " eV" << G4endl;
181 } 181 }
182 } 182 }
183 } 183 }
184 } 184 }
185 185
186 //....oooOO0OOooo........oooOO0OOooo........oo 186 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
187 187
188 void G4ElectronIonPair::DumpG4MeanEnergyPerIon << 188 void G4ElectronIonPair::DumpG4MeanEnergyPerIonPair()
189 { 189 {
190 if(nMaterials > 0) { 190 if(nMaterials > 0) {
191 G4cout << "### G4ElectronIonPair: mean ene 191 G4cout << "### G4ElectronIonPair: mean energy per ion pair "
192 << " for Geant4 materials" << G4endl; 192 << " for Geant4 materials" << G4endl;
193 for(G4int i=0; i<nMaterials; ++i) { << 193 for(G4int i=0; i<nMaterials; i++) {
194 G4cout << " " << g4MatNames[i] << " 194 G4cout << " " << g4MatNames[i] << " Epair= "
195 << g4MatData[i]/eV << " eV" << G4endl; 195 << g4MatData[i]/eV << " eV" << G4endl;
196 } 196 }
197 } 197 }
198 } 198 }
199 199
200 //....oooOO0OOooo........oooOO0OOooo........oo 200 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
201 201
202 void G4ElectronIonPair::Initialise() 202 void G4ElectronIonPair::Initialise()
203 { 203 {
204 // ICRU Report 31, 1979 204 // ICRU Report 31, 1979
205 g4MatNames.push_back("G4_Si"); 205 g4MatNames.push_back("G4_Si");
206 g4MatData.push_back(3.62*eV); 206 g4MatData.push_back(3.62*eV);
207 207
208 g4MatNames.push_back("G4_Ge"); 208 g4MatNames.push_back("G4_Ge");
209 g4MatData.push_back(2.97*eV); 209 g4MatData.push_back(2.97*eV);
210 210
211 g4MatNames.push_back("G4_He"); 211 g4MatNames.push_back("G4_He");
212 g4MatData.push_back(44.4*eV); 212 g4MatData.push_back(44.4*eV);
213 213
214 g4MatNames.push_back("G4_N"); 214 g4MatNames.push_back("G4_N");
215 g4MatData.push_back(36.4*eV); 215 g4MatData.push_back(36.4*eV);
216 216
217 g4MatNames.push_back("G4_O"); 217 g4MatNames.push_back("G4_O");
218 g4MatData.push_back(32.3*eV); 218 g4MatData.push_back(32.3*eV);
219 219
220 g4MatNames.push_back("G4_Ne"); 220 g4MatNames.push_back("G4_Ne");
221 g4MatData.push_back(36.8*eV); 221 g4MatData.push_back(36.8*eV);
222 222
223 g4MatNames.push_back("G4_Ar"); 223 g4MatNames.push_back("G4_Ar");
224 g4MatData.push_back(26.34*eV); 224 g4MatData.push_back(26.34*eV);
225 225
226 g4MatNames.push_back("G4_Kr"); 226 g4MatNames.push_back("G4_Kr");
227 g4MatData.push_back(24.1*eV); 227 g4MatData.push_back(24.1*eV);
228 228
229 g4MatNames.push_back("G4_Xe"); 229 g4MatNames.push_back("G4_Xe");
230 g4MatData.push_back(21.6*eV); 230 g4MatData.push_back(21.6*eV);
231 231
232 g4MatNames.push_back("G4_lAr"); 232 g4MatNames.push_back("G4_lAr");
233 g4MatData.push_back(23.6*eV); 233 g4MatData.push_back(23.6*eV);
234 234
235 g4MatNames.push_back("G4_lKr"); 235 g4MatNames.push_back("G4_lKr");
236 g4MatData.push_back(20.5*eV); 236 g4MatData.push_back(20.5*eV);
237 237
238 g4MatNames.push_back("G4_lXe"); 238 g4MatNames.push_back("G4_lXe");
239 g4MatData.push_back(15.6*eV); 239 g4MatData.push_back(15.6*eV);
240 240
241 g4MatNames.push_back("G4_AIR"); 241 g4MatNames.push_back("G4_AIR");
242 g4MatData.push_back(35.1*eV); 242 g4MatData.push_back(35.1*eV);
243 243
244 nMaterials = (G4int)g4MatData.size(); << 244 nMaterials = g4MatData.size();
245 } 245 }
246 246
247 //....oooOO0OOooo........oooOO0OOooo........oo 247 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
248 248