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27 // ------------------------------------------- 27 // -------------------------------------------------------------------
28 // 28 //
29 // GEANT4 Class file 29 // GEANT4 Class file
30 // 30 //
31 // 31 //
32 // File name: G4ICRU49NuclearStoppingModel 32 // File name: G4ICRU49NuclearStoppingModel
33 // 33 //
34 // Author: V.Ivanchenko 34 // Author: V.Ivanchenko
35 // 35 //
36 // Creation date: 09.04.2008 from G4MuMscModel 36 // Creation date: 09.04.2008 from G4MuMscModel
37 // 37 //
38 // Modifications: 38 // Modifications:
39 // 39 //
40 // 40 //
41 // Class Description: 41 // Class Description:
42 // 42 //
43 // Implementation of the model of ICRU'49 nucl 43 // Implementation of the model of ICRU'49 nuclear stopping
44 44
45 // ------------------------------------------- 45 // -------------------------------------------------------------------
46 // 46 //
47 47
48 //....oooOO0OOooo........oooOO0OOooo........oo 48 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
49 //....oooOO0OOooo........oooOO0OOooo........oo 49 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
50 50
51 #include "G4ICRU49NuclearStoppingModel.hh" 51 #include "G4ICRU49NuclearStoppingModel.hh"
52 #include "G4PhysicalConstants.hh" 52 #include "G4PhysicalConstants.hh"
53 #include "G4SystemOfUnits.hh" 53 #include "G4SystemOfUnits.hh"
54 #include "Randomize.hh" 54 #include "Randomize.hh"
55 #include "G4LossTableManager.hh" 55 #include "G4LossTableManager.hh"
56 #include "G4ParticleChangeForLoss.hh" 56 #include "G4ParticleChangeForLoss.hh"
57 #include "G4ElementVector.hh" 57 #include "G4ElementVector.hh"
58 #include "G4ProductionCutsTable.hh" 58 #include "G4ProductionCutsTable.hh"
59 #include "G4Step.hh" 59 #include "G4Step.hh"
60 #include "G4AutoLock.hh" <<
61 #include "G4Pow.hh" 60 #include "G4Pow.hh"
62 61
63 //....oooOO0OOooo........oooOO0OOooo........oo 62 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
64 63
65 G4double G4ICRU49NuclearStoppingModel::Z23[] = 64 G4double G4ICRU49NuclearStoppingModel::Z23[] = {0.0};
66 65
67 namespace << 66 #ifdef G4MULTITHREADED
68 { << 67 G4Mutex G4ICRU49NuclearStoppingModel::ICRU49NuclearMutex = G4MUTEX_INITIALIZER;
69 G4Mutex ICRU49NuclearMutex = G4MUTEX_INITIAL << 68 #endif
70 } <<
71 69
72 G4ICRU49NuclearStoppingModel::G4ICRU49NuclearS 70 G4ICRU49NuclearStoppingModel::G4ICRU49NuclearStoppingModel(const G4String& nam)
73 : G4VEmModel(nam) 71 : G4VEmModel(nam)
74 { 72 {
75 theZieglerFactor = eV*cm2*1.0e-15; 73 theZieglerFactor = eV*cm2*1.0e-15;
76 g4calc = G4Pow::GetInstance(); 74 g4calc = G4Pow::GetInstance();
77 InitialiseArray(); 75 InitialiseArray();
78 } 76 }
79 77
80 //....oooOO0OOooo........oooOO0OOooo........oo 78 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
81 79
82 G4ICRU49NuclearStoppingModel::~G4ICRU49Nuclear << 80 G4ICRU49NuclearStoppingModel::~G4ICRU49NuclearStoppingModel()
>> 81 {}
83 82
84 //....oooOO0OOooo........oooOO0OOooo........oo 83 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
85 84
86 void G4ICRU49NuclearStoppingModel::Initialise( 85 void G4ICRU49NuclearStoppingModel::Initialise(const G4ParticleDefinition*,
87 const G4DataVector&) 86 const G4DataVector&)
88 {} 87 {}
89 88
90 //....oooOO0OOooo........oooOO0OOooo........oo 89 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
91 90
92 void G4ICRU49NuclearStoppingModel::InitialiseA 91 void G4ICRU49NuclearStoppingModel::InitialiseArray()
93 { 92 {
94 if(0.0 != Z23[1]) { return; } <<
95 G4AutoLock l(&ICRU49NuclearMutex); <<
96 if(0.0 == Z23[1]) { 93 if(0.0 == Z23[1]) {
97 for(G4int i=2; i<100; ++i) { << 94 #ifdef G4MULTITHREADED
98 Z23[i] = g4calc->powZ(i, 0.23); << 95 G4MUTEXLOCK(&G4ICRU49NuclearStoppingModel::ICRU49NuclearMutex);
>> 96 #endif
>> 97 if(0.0 == Z23[1]) {
>> 98 for(G4int i=2; i<100; ++i) {
>> 99 Z23[i] = g4calc->powZ(i, 0.23);
>> 100 }
>> 101 Z23[1] = 1.0;
99 } 102 }
100 Z23[1] = 1.0; << 103 #ifdef G4MULTITHREADED
>> 104 G4MUTEXUNLOCK(&G4ICRU49NuclearStoppingModel::ICRU49NuclearMutex);
>> 105 #endif
101 } 106 }
102 l.unlock(); <<
103 } 107 }
104 108
105 //....oooOO0OOooo........oooOO0OOooo........oo 109 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
106 110
107 void 111 void
108 G4ICRU49NuclearStoppingModel::SampleSecondarie 112 G4ICRU49NuclearStoppingModel::SampleSecondaries(
109 std::vector<G4Dynamic 113 std::vector<G4DynamicParticle*>*,
110 const G4MaterialCutsCouple*, 114 const G4MaterialCutsCouple*,
111 const G4DynamicParticle*, 115 const G4DynamicParticle*,
112 G4double, G4double) 116 G4double, G4double)
113 {} 117 {}
114 118
115 //....oooOO0OOooo........oooOO0OOooo........oo 119 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
116 120
117 G4double 121 G4double
118 G4ICRU49NuclearStoppingModel::ComputeDEDXPerVo 122 G4ICRU49NuclearStoppingModel::ComputeDEDXPerVolume(
119 const G4Material* mat 123 const G4Material* mat,
120 const G4ParticleDefinition* p, 124 const G4ParticleDefinition* p,
121 G4double kinEnergy, 125 G4double kinEnergy,
122 G4double) 126 G4double)
123 { 127 {
124 G4double nloss = 0.0; 128 G4double nloss = 0.0;
125 if(kinEnergy <= 0.0) { return nloss; } 129 if(kinEnergy <= 0.0) { return nloss; }
126 130
127 // projectile 131 // projectile
128 G4double mass1 = p->GetPDGMass(); 132 G4double mass1 = p->GetPDGMass();
129 G4double z1 = std::abs(p->GetPDGCharge()/epl 133 G4double z1 = std::abs(p->GetPDGCharge()/eplus);
130 134
131 if(kinEnergy*proton_mass_c2/mass1 > z1*z1*Me 135 if(kinEnergy*proton_mass_c2/mass1 > z1*z1*MeV) { return nloss; }
132 136
133 // Projectile nucleus 137 // Projectile nucleus
134 mass1 /= amu_c2; 138 mass1 /= amu_c2;
135 139
136 // loop for the elements in the material 140 // loop for the elements in the material
137 std::size_t numberOfElements = mat->GetNumbe << 141 G4int numberOfElements = mat->GetNumberOfElements();
138 const G4ElementVector* theElementVector = ma 142 const G4ElementVector* theElementVector = mat->GetElementVector();
139 const G4double* atomDensity = mat->GetAtomi 143 const G4double* atomDensity = mat->GetAtomicNumDensityVector();
140 144
141 for (std::size_t iel=0; iel<numberOfElements << 145 for (G4int iel=0; iel<numberOfElements; ++iel) {
142 const G4Element* element = (*theElementVec 146 const G4Element* element = (*theElementVector)[iel] ;
143 G4double z2 = element->GetZ(); 147 G4double z2 = element->GetZ();
144 G4double mass2 = element->GetN(); 148 G4double mass2 = element->GetN();
145 nloss += (NuclearStoppingPower(kinEnergy, 149 nloss += (NuclearStoppingPower(kinEnergy, z1, z2, mass1, mass2))
146 * atomDensity[iel]; 150 * atomDensity[iel];
147 } 151 }
148 nloss *= theZieglerFactor; 152 nloss *= theZieglerFactor;
149 //G4cout << " nloss= " << nloss << G4endl 153 //G4cout << " nloss= " << nloss << G4endl;
150 return nloss; 154 return nloss;
151 } 155 }
152 156
153 //....oooOO0OOooo........oooOO0OOooo........oo 157 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
154 158
155 G4double 159 G4double
156 G4ICRU49NuclearStoppingModel::NuclearStoppingP 160 G4ICRU49NuclearStoppingModel::NuclearStoppingPower(G4double kineticEnergy,
157 G4double z1, G4double z2, 161 G4double z1, G4double z2,
158 G4double mass1, G4double mass2) 162 G4double mass1, G4double mass2)
159 { 163 {
160 G4double energy = kineticEnergy/keV ; // en 164 G4double energy = kineticEnergy/keV ; // energy in keV
161 G4double nloss = 0.0; 165 G4double nloss = 0.0;
162 G4double z12 = z1*z2; 166 G4double z12 = z1*z2;
163 G4int iz1 = std::min(99, G4lrint(z1)); 167 G4int iz1 = std::min(99, G4lrint(z1));
164 G4int iz2 = std::min(99, G4lrint(z2)); 168 G4int iz2 = std::min(99, G4lrint(z2));
165 169
166 G4double rm; 170 G4double rm;
167 if(z1 > 1.5) { 171 if(z1 > 1.5) {
168 rm = (mass1 + mass2)*(Z23[iz1] + Z23[iz2]) 172 rm = (mass1 + mass2)*(Z23[iz1] + Z23[iz2]);
169 } else { 173 } else {
170 rm = (mass1 + mass2)*g4calc->Z13(G4lrint(z 174 rm = (mass1 + mass2)*g4calc->Z13(G4lrint(z2));
171 } 175 }
172 G4double er = 32.536 * mass2 * energy / ( z1 176 G4double er = 32.536 * mass2 * energy / ( z12 * rm ) ; // reduced energy
173 /* 177 /*
174 G4cout << " z1= " << iz1 << " z2= " << iz2 178 G4cout << " z1= " << iz1 << " z2= " << iz2 << " mass1= " << mass1
175 << " mass2= " << mass2 << " er= " << er << 179 << " mass2= " << mass2 << " er= " << er << G4endl;
176 */ 180 */
177 static const G4double nuca[104][2] = { 181 static const G4double nuca[104][2] = {
178 { 1.0E+8, 5.831E-8}, 182 { 1.0E+8, 5.831E-8},
179 { 8.0E+7, 7.288E-8}, 183 { 8.0E+7, 7.288E-8},
180 { 6.0E+7, 9.719E-8}, 184 { 6.0E+7, 9.719E-8},
181 { 5.0E+7, 1.166E-7}, 185 { 5.0E+7, 1.166E-7},
182 { 4.0E+7, 1.457E-7}, 186 { 4.0E+7, 1.457E-7},
183 { 3.0E+7, 1.942E-7}, 187 { 3.0E+7, 1.942E-7},
184 { 2.0E+7, 2.916E-7}, 188 { 2.0E+7, 2.916E-7},
185 { 1.5E+7, 3.887E-7}, 189 { 1.5E+7, 3.887E-7},
186 190
187 { 1.0E+7, 5.833E-7}, 191 { 1.0E+7, 5.833E-7},
188 { 8.0E+6, 7.287E-7}, 192 { 8.0E+6, 7.287E-7},
189 { 6.0E+6, 9.712E-7}, 193 { 6.0E+6, 9.712E-7},
190 { 5.0E+6, 1.166E-6}, 194 { 5.0E+6, 1.166E-6},
191 { 4.0E+6, 1.457E-6}, 195 { 4.0E+6, 1.457E-6},
192 { 3.0E+6, 1.941E-6}, 196 { 3.0E+6, 1.941E-6},
193 { 2.0E+6, 2.911E-6}, 197 { 2.0E+6, 2.911E-6},
194 { 1.5E+6, 3.878E-6}, 198 { 1.5E+6, 3.878E-6},
195 199
196 { 1.0E+6, 5.810E-6}, 200 { 1.0E+6, 5.810E-6},
197 { 8.0E+5, 7.262E-6}, 201 { 8.0E+5, 7.262E-6},
198 { 6.0E+5, 9.663E-6}, 202 { 6.0E+5, 9.663E-6},
199 { 5.0E+5, 1.157E-5}, 203 { 5.0E+5, 1.157E-5},
200 { 4.0E+5, 1.442E-5}, 204 { 4.0E+5, 1.442E-5},
201 { 3.0E+5, 1.913E-5}, 205 { 3.0E+5, 1.913E-5},
202 { 2.0E+5, 2.845E-5}, 206 { 2.0E+5, 2.845E-5},
203 { 1.5E+5, 3.762E-5}, 207 { 1.5E+5, 3.762E-5},
204 208
205 { 1.0E+5, 5.554E-5}, 209 { 1.0E+5, 5.554E-5},
206 { 8.0E+4, 6.866E-5}, 210 { 8.0E+4, 6.866E-5},
207 { 6.0E+4, 9.020E-5}, 211 { 6.0E+4, 9.020E-5},
208 { 5.0E+4, 1.070E-4}, 212 { 5.0E+4, 1.070E-4},
209 { 4.0E+4, 1.319E-4}, 213 { 4.0E+4, 1.319E-4},
210 { 3.0E+4, 1.722E-4}, 214 { 3.0E+4, 1.722E-4},
211 { 2.0E+4, 2.499E-4}, 215 { 2.0E+4, 2.499E-4},
212 { 1.5E+4, 3.248E-4}, 216 { 1.5E+4, 3.248E-4},
213 217
214 { 1.0E+4, 4.688E-4}, 218 { 1.0E+4, 4.688E-4},
215 { 8.0E+3, 5.729E-4}, 219 { 8.0E+3, 5.729E-4},
216 { 6.0E+3, 7.411E-4}, 220 { 6.0E+3, 7.411E-4},
217 { 5.0E+3, 8.718E-4}, 221 { 5.0E+3, 8.718E-4},
218 { 4.0E+3, 1.063E-3}, 222 { 4.0E+3, 1.063E-3},
219 { 3.0E+3, 1.370E-3}, 223 { 3.0E+3, 1.370E-3},
220 { 2.0E+3, 1.955E-3}, 224 { 2.0E+3, 1.955E-3},
221 { 1.5E+3, 2.511E-3}, 225 { 1.5E+3, 2.511E-3},
222 226
223 { 1.0E+3, 3.563E-3}, 227 { 1.0E+3, 3.563E-3},
224 { 8.0E+2, 4.314E-3}, 228 { 8.0E+2, 4.314E-3},
225 { 6.0E+2, 5.511E-3}, 229 { 6.0E+2, 5.511E-3},
226 { 5.0E+2, 6.430E-3}, 230 { 5.0E+2, 6.430E-3},
227 { 4.0E+2, 7.756E-3}, 231 { 4.0E+2, 7.756E-3},
228 { 3.0E+2, 9.855E-3}, 232 { 3.0E+2, 9.855E-3},
229 { 2.0E+2, 1.375E-2}, 233 { 2.0E+2, 1.375E-2},
230 { 1.5E+2, 1.736E-2}, 234 { 1.5E+2, 1.736E-2},
231 235
232 { 1.0E+2, 2.395E-2}, 236 { 1.0E+2, 2.395E-2},
233 { 8.0E+1, 2.850E-2}, 237 { 8.0E+1, 2.850E-2},
234 { 6.0E+1, 3.552E-2}, 238 { 6.0E+1, 3.552E-2},
235 { 5.0E+1, 4.073E-2}, 239 { 5.0E+1, 4.073E-2},
236 { 4.0E+1, 4.802E-2}, 240 { 4.0E+1, 4.802E-2},
237 { 3.0E+1, 5.904E-2}, 241 { 3.0E+1, 5.904E-2},
238 { 1.5E+1, 9.426E-2}, 242 { 1.5E+1, 9.426E-2},
239 243
240 { 1.0E+1, 1.210E-1}, 244 { 1.0E+1, 1.210E-1},
241 { 8.0E+0, 1.377E-1}, 245 { 8.0E+0, 1.377E-1},
242 { 6.0E+0, 1.611E-1}, 246 { 6.0E+0, 1.611E-1},
243 { 5.0E+0, 1.768E-1}, 247 { 5.0E+0, 1.768E-1},
244 { 4.0E+0, 1.968E-1}, 248 { 4.0E+0, 1.968E-1},
245 { 3.0E+0, 2.235E-1}, 249 { 3.0E+0, 2.235E-1},
246 { 2.0E+0, 2.613E-1}, 250 { 2.0E+0, 2.613E-1},
247 { 1.5E+0, 2.871E-1}, 251 { 1.5E+0, 2.871E-1},
248 252
249 { 1.0E+0, 3.199E-1}, 253 { 1.0E+0, 3.199E-1},
250 { 8.0E-1, 3.354E-1}, 254 { 8.0E-1, 3.354E-1},
251 { 6.0E-1, 3.523E-1}, 255 { 6.0E-1, 3.523E-1},
252 { 5.0E-1, 3.609E-1}, 256 { 5.0E-1, 3.609E-1},
253 { 4.0E-1, 3.693E-1}, 257 { 4.0E-1, 3.693E-1},
254 { 3.0E-1, 3.766E-1}, 258 { 3.0E-1, 3.766E-1},
255 { 2.0E-1, 3.803E-1}, 259 { 2.0E-1, 3.803E-1},
256 { 1.5E-1, 3.788E-1}, 260 { 1.5E-1, 3.788E-1},
257 261
258 { 1.0E-1, 3.711E-1}, 262 { 1.0E-1, 3.711E-1},
259 { 8.0E-2, 3.644E-1}, 263 { 8.0E-2, 3.644E-1},
260 { 6.0E-2, 3.530E-1}, 264 { 6.0E-2, 3.530E-1},
261 { 5.0E-2, 3.444E-1}, 265 { 5.0E-2, 3.444E-1},
262 { 4.0E-2, 3.323E-1}, 266 { 4.0E-2, 3.323E-1},
263 { 3.0E-2, 3.144E-1}, 267 { 3.0E-2, 3.144E-1},
264 { 2.0E-2, 2.854E-1}, 268 { 2.0E-2, 2.854E-1},
265 { 1.5E-2, 2.629E-1}, 269 { 1.5E-2, 2.629E-1},
266 270
267 { 1.0E-2, 2.298E-1}, 271 { 1.0E-2, 2.298E-1},
268 { 8.0E-3, 2.115E-1}, 272 { 8.0E-3, 2.115E-1},
269 { 6.0E-3, 1.883E-1}, 273 { 6.0E-3, 1.883E-1},
270 { 5.0E-3, 1.741E-1}, 274 { 5.0E-3, 1.741E-1},
271 { 4.0E-3, 1.574E-1}, 275 { 4.0E-3, 1.574E-1},
272 { 3.0E-3, 1.372E-1}, 276 { 3.0E-3, 1.372E-1},
273 { 2.0E-3, 1.116E-1}, 277 { 2.0E-3, 1.116E-1},
274 { 1.5E-3, 9.559E-2}, 278 { 1.5E-3, 9.559E-2},
275 279
276 { 1.0E-3, 7.601E-2}, 280 { 1.0E-3, 7.601E-2},
277 { 8.0E-4, 6.668E-2}, 281 { 8.0E-4, 6.668E-2},
278 { 6.0E-4, 5.605E-2}, 282 { 6.0E-4, 5.605E-2},
279 { 5.0E-4, 5.008E-2}, 283 { 5.0E-4, 5.008E-2},
280 { 4.0E-4, 4.352E-2}, 284 { 4.0E-4, 4.352E-2},
281 { 3.0E-4, 3.617E-2}, 285 { 3.0E-4, 3.617E-2},
282 { 2.0E-4, 2.768E-2}, 286 { 2.0E-4, 2.768E-2},
283 { 1.5E-4, 2.279E-2}, 287 { 1.5E-4, 2.279E-2},
284 288
285 { 1.0E-4, 1.723E-2}, 289 { 1.0E-4, 1.723E-2},
286 { 8.0E-5, 1.473E-2}, 290 { 8.0E-5, 1.473E-2},
287 { 6.0E-5, 1.200E-2}, 291 { 6.0E-5, 1.200E-2},
288 { 5.0E-5, 1.052E-2}, 292 { 5.0E-5, 1.052E-2},
289 { 4.0E-5, 8.950E-3}, 293 { 4.0E-5, 8.950E-3},
290 { 3.0E-5, 7.246E-3}, 294 { 3.0E-5, 7.246E-3},
291 { 2.0E-5, 5.358E-3}, 295 { 2.0E-5, 5.358E-3},
292 { 1.5E-5, 4.313E-3}, 296 { 1.5E-5, 4.313E-3},
293 { 0.0, 3.166E-3} 297 { 0.0, 3.166E-3}
294 }; 298 };
295 299
296 if (er >= nuca[0][0]) { nloss = nuca[0][1]; 300 if (er >= nuca[0][0]) { nloss = nuca[0][1]; }
297 else { 301 else {
298 // the table is inverse in energy 302 // the table is inverse in energy
299 for (G4int i=102; i>=0; --i) { 303 for (G4int i=102; i>=0; --i) {
300 G4double edi = nuca[i][0]; 304 G4double edi = nuca[i][0];
301 if (er <= edi) { 305 if (er <= edi) {
302 G4double edi1 = nuca[i+1][0]; 306 G4double edi1 = nuca[i+1][0];
303 G4double ai = nuca[i][1]; 307 G4double ai = nuca[i][1];
304 G4double ai1 = nuca[i+1][1]; 308 G4double ai1 = nuca[i+1][1];
305 nloss = (ai - ai1)*(er - edi1)/(edi - 309 nloss = (ai - ai1)*(er - edi1)/(edi - edi1) + ai1;
306 break; 310 break;
307 } 311 }
308 } 312 }
309 } 313 }
310 314
311 // Stragling 315 // Stragling
312 if(lossFlucFlag) { 316 if(lossFlucFlag) {
313 G4double sig = 4.0 * mass1 * mass2 / ((mas 317 G4double sig = 4.0 * mass1 * mass2 / ((mass1 + mass2)*(mass1 + mass2)*
314 (4.0 + 0.197/(er*er) + 6.584/er)); 318 (4.0 + 0.197/(er*er) + 6.584/er));
315 319
316 nloss *= G4RandGauss::shoot(1.0,sig); 320 nloss *= G4RandGauss::shoot(1.0,sig);
317 } 321 }
318 322
319 nloss *= 8.462 * z12 * mass1 / rm; // Return 323 nloss *= 8.462 * z12 * mass1 / rm; // Return to [ev/(10^15 atoms/cm^2]
320 324
321 nloss = std::max(nloss, 0.0); 325 nloss = std::max(nloss, 0.0);
322 return nloss; 326 return nloss;
323 } 327 }
324 328
325 //....oooOO0OOooo........oooOO0OOooo........oo 329 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
326 330