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>> 26 // $Id: G4ICRU49NuclearStoppingModel.cc,v 1.2 2009/11/10 19:25:47 vnivanch Exp $
>> 27 // GEANT4 tag $Name: geant4-09-03-patch-01 $
26 // 28 //
27 // ------------------------------------------- 29 // -------------------------------------------------------------------
28 // 30 //
29 // GEANT4 Class file 31 // GEANT4 Class file
30 // 32 //
31 // 33 //
32 // File name: G4ICRU49NuclearStoppingModel 34 // File name: G4ICRU49NuclearStoppingModel
33 // 35 //
34 // Author: V.Ivanchenko 36 // Author: V.Ivanchenko
35 // 37 //
36 // Creation date: 09.04.2008 from G4MuMscModel 38 // Creation date: 09.04.2008 from G4MuMscModel
37 // 39 //
38 // Modifications: 40 // Modifications:
39 // 41 //
40 // 42 //
41 // Class Description: 43 // Class Description:
42 // 44 //
43 // Implementation of the model of ICRU'49 nucl 45 // Implementation of the model of ICRU'49 nuclear stopping
44 46
45 // ------------------------------------------- 47 // -------------------------------------------------------------------
46 // 48 //
47 49
48 //....oooOO0OOooo........oooOO0OOooo........oo 50 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
49 //....oooOO0OOooo........oooOO0OOooo........oo 51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
50 52
51 #include "G4ICRU49NuclearStoppingModel.hh" 53 #include "G4ICRU49NuclearStoppingModel.hh"
52 #include "G4PhysicalConstants.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::ad[] = {0.0};
>> 65 G4double G4ICRU49NuclearStoppingModel::ed[] = {0.0};
66 66
67 namespace << 67 using namespace std;
68 { <<
69 G4Mutex ICRU49NuclearMutex = G4MUTEX_INITIAL <<
70 } <<
71 68
72 G4ICRU49NuclearStoppingModel::G4ICRU49NuclearS 69 G4ICRU49NuclearStoppingModel::G4ICRU49NuclearStoppingModel(const G4String& nam)
73 : G4VEmModel(nam) << 70 : G4VEmModel(nam),lossFlucFlag(false)
74 { 71 {
75 theZieglerFactor = eV*cm2*1.0e-15; 72 theZieglerFactor = eV*cm2*1.0e-15;
76 g4calc = G4Pow::GetInstance(); << 73 g4pow = G4Pow::GetInstance();
77 InitialiseArray(); << 74 if(ad[0] == 0.0) InitialiseNuclearStopping();
78 } 75 }
79 76
80 //....oooOO0OOooo........oooOO0OOooo........oo 77 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
81 78
82 G4ICRU49NuclearStoppingModel::~G4ICRU49Nuclear << 79 G4ICRU49NuclearStoppingModel::~G4ICRU49NuclearStoppingModel()
>> 80 {}
83 81
84 //....oooOO0OOooo........oooOO0OOooo........oo 82 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
85 83
86 void G4ICRU49NuclearStoppingModel::Initialise( 84 void G4ICRU49NuclearStoppingModel::Initialise(const G4ParticleDefinition*,
87 const G4DataVector&) 85 const G4DataVector&)
88 {} 86 {}
89 87
90 //....oooOO0OOooo........oooOO0OOooo........oo 88 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
91 89
92 void G4ICRU49NuclearStoppingModel::InitialiseA <<
93 { <<
94 if(0.0 != Z23[1]) { return; } <<
95 G4AutoLock l(&ICRU49NuclearMutex); <<
96 if(0.0 == Z23[1]) { <<
97 for(G4int i=2; i<100; ++i) { <<
98 Z23[i] = g4calc->powZ(i, 0.23); <<
99 } <<
100 Z23[1] = 1.0; <<
101 } <<
102 l.unlock(); <<
103 } <<
104 <<
105 //....oooOO0OOooo........oooOO0OOooo........oo <<
106 <<
107 void 90 void
108 G4ICRU49NuclearStoppingModel::SampleSecondarie << 91 G4ICRU49NuclearStoppingModel::SampleSecondaries(std::vector<G4DynamicParticle*>*,
109 std::vector<G4Dynamic << 92 const G4MaterialCutsCouple*,
110 const G4MaterialCutsCouple*, << 93 const G4DynamicParticle*,
111 const G4DynamicParticle*, << 94 G4double, G4double)
112 G4double, G4double) <<
113 {} 95 {}
114 96
115 //....oooOO0OOooo........oooOO0OOooo........oo 97 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
116 98
117 G4double 99 G4double
118 G4ICRU49NuclearStoppingModel::ComputeDEDXPerVo << 100 G4ICRU49NuclearStoppingModel::ComputeDEDXPerVolume(const G4Material* mat,
119 const G4Material* mat << 101 const G4ParticleDefinition* p,
120 const G4ParticleDefinition* p, << 102 G4double kinEnergy,
121 G4double kinEnergy, << 103 G4double)
122 G4double) <<
123 { 104 {
124 G4double nloss = 0.0; 105 G4double nloss = 0.0;
125 if(kinEnergy <= 0.0) { return nloss; } << 106 if(kinEnergy <= 0.0) return nloss;
126 107
127 // projectile 108 // projectile
128 G4double mass1 = p->GetPDGMass(); << 109 G4double m1 = p->GetPDGMass();
129 G4double z1 = std::abs(p->GetPDGCharge()/epl << 110 G4double z1 = std::fabs(p->GetPDGCharge()/eplus);
130 111
131 if(kinEnergy*proton_mass_c2/mass1 > z1*z1*Me << 112 if(kinEnergy*proton_mass_c2/m1 > z1*z1*100.*MeV) return nloss;
132 113
133 // Projectile nucleus 114 // Projectile nucleus
134 mass1 /= amu_c2; << 115 m1 /= amu_c2;
135 116
136 // loop for the elements in the material 117 // loop for the elements in the material
137 std::size_t numberOfElements = mat->GetNumbe << 118 G4int numberOfElements = mat->GetNumberOfElements();
138 const G4ElementVector* theElementVector = ma 119 const G4ElementVector* theElementVector = mat->GetElementVector();
139 const G4double* atomDensity = mat->GetAtomi 120 const G4double* atomDensity = mat->GetAtomicNumDensityVector();
140 121
141 for (std::size_t iel=0; iel<numberOfElements << 122 for (G4int iel=0; iel<numberOfElements; iel++) {
142 const G4Element* element = (*theElementVec 123 const G4Element* element = (*theElementVector)[iel] ;
143 G4double z2 = element->GetZ(); 124 G4double z2 = element->GetZ();
144 G4double mass2 = element->GetN(); << 125 G4double m2 = element->GetA()*mole/g ;
145 nloss += (NuclearStoppingPower(kinEnergy, << 126 nloss += (NuclearStoppingPower(kinEnergy, z1, z2, m1, m2))
146 * atomDensity[iel]; << 127 * atomDensity[iel] ;
147 } 128 }
148 nloss *= theZieglerFactor; 129 nloss *= theZieglerFactor;
149 //G4cout << " nloss= " << nloss << G4endl <<
150 return nloss; 130 return nloss;
151 } 131 }
152 132
153 //....oooOO0OOooo........oooOO0OOooo........oo 133 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
154 134
155 G4double 135 G4double
156 G4ICRU49NuclearStoppingModel::NuclearStoppingP 136 G4ICRU49NuclearStoppingModel::NuclearStoppingPower(G4double kineticEnergy,
157 G4double z1, G4double z2, 137 G4double z1, G4double z2,
158 G4double mass1, G4double mass2) << 138 G4double m1, G4double m2)
159 { 139 {
160 G4double energy = kineticEnergy/keV ; // en 140 G4double energy = kineticEnergy/keV ; // energy in keV
161 G4double nloss = 0.0; 141 G4double nloss = 0.0;
162 G4double z12 = z1*z2; 142 G4double z12 = z1*z2;
163 G4int iz1 = std::min(99, G4lrint(z1)); << 143 G4int iz1 = G4int(z1);
164 G4int iz2 = std::min(99, G4lrint(z2)); << 144 G4int iz2 = G4int(z2);
165 145
166 G4double rm; 146 G4double rm;
167 if(z1 > 1.5) { << 147 if(iz1 > 1) rm = (m1 + m2) * ( g4pow->Z23(iz1) + g4pow->Z23(iz2) );
168 rm = (mass1 + mass2)*(Z23[iz1] + Z23[iz2]) << 148 else rm = (m1 + m2) * g4pow->Z13(iz2);
169 } else { << 149
170 rm = (mass1 + mass2)*g4calc->Z13(G4lrint(z << 150 G4double er = 32.536 * m2 * energy / ( z12 * rm ) ; // reduced energy
>> 151
>> 152 if (er >= ed[0]) nloss = ad[0];
>> 153 else {
>> 154 // the table is inverse in energy
>> 155 for (G4int i=102; i>=0; --i)
>> 156 {
>> 157 if (er <= ed[i]) {
>> 158 nloss = (ad[i] - ad[i+1])*(er - ed[i+1])/(ed[i] - ed[i+1]) + ad[i+1];
>> 159 break;
>> 160 }
>> 161 }
>> 162 }
>> 163
>> 164 // Stragling
>> 165 if(lossFlucFlag) {
>> 166 // G4double sig = 4.0 * m1 * m2 / ((m1 + m2)*(m1 + m2)*
>> 167 // (4.0 + 0.197*std::pow(er,-1.6991)+6.584*std::pow(er,-1.0494))) ;
>> 168 G4double sig = 4.0 * m1 * m2 / ((m1 + m2)*(m1 + m2)*
>> 169 (4.0 + 0.197/(er*er) + 6.584/er));
>> 170
>> 171 nloss *= G4RandGauss::shoot(1.0,sig) ;
>> 172 lossFlucFlag = false;
171 } 173 }
172 G4double er = 32.536 * mass2 * energy / ( z1 << 174
173 /* << 175 nloss *= 8.462 * z12 * m1 / rm ; // Return to [ev/(10^15 atoms/cm^2]
174 G4cout << " z1= " << iz1 << " z2= " << iz2 << 176
175 << " mass2= " << mass2 << " er= " << er << << 177 if ( nloss < 0.0) nloss = 0.0 ;
176 */ << 178
177 static const G4double nuca[104][2] = { << 179 return nloss;
>> 180 }
>> 181
>> 182 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 183
>> 184 void G4ICRU49NuclearStoppingModel::InitialiseNuclearStopping()
>> 185 {
>> 186 const G4double nuca[104][2] = {
178 { 1.0E+8, 5.831E-8}, 187 { 1.0E+8, 5.831E-8},
179 { 8.0E+7, 7.288E-8}, 188 { 8.0E+7, 7.288E-8},
180 { 6.0E+7, 9.719E-8}, 189 { 6.0E+7, 9.719E-8},
181 { 5.0E+7, 1.166E-7}, 190 { 5.0E+7, 1.166E-7},
182 { 4.0E+7, 1.457E-7}, 191 { 4.0E+7, 1.457E-7},
183 { 3.0E+7, 1.942E-7}, 192 { 3.0E+7, 1.942E-7},
184 { 2.0E+7, 2.916E-7}, 193 { 2.0E+7, 2.916E-7},
185 { 1.5E+7, 3.887E-7}, 194 { 1.5E+7, 3.887E-7},
186 195
187 { 1.0E+7, 5.833E-7}, 196 { 1.0E+7, 5.833E-7},
188 { 8.0E+6, 7.287E-7}, 197 { 8.0E+6, 7.287E-7},
189 { 6.0E+6, 9.712E-7}, 198 { 6.0E+6, 9.712E-7},
190 { 5.0E+6, 1.166E-6}, 199 { 5.0E+6, 1.166E-6},
191 { 4.0E+6, 1.457E-6}, 200 { 4.0E+6, 1.457E-6},
192 { 3.0E+6, 1.941E-6}, 201 { 3.0E+6, 1.941E-6},
193 { 2.0E+6, 2.911E-6}, 202 { 2.0E+6, 2.911E-6},
194 { 1.5E+6, 3.878E-6}, 203 { 1.5E+6, 3.878E-6},
195 204
196 { 1.0E+6, 5.810E-6}, 205 { 1.0E+6, 5.810E-6},
197 { 8.0E+5, 7.262E-6}, 206 { 8.0E+5, 7.262E-6},
198 { 6.0E+5, 9.663E-6}, 207 { 6.0E+5, 9.663E-6},
199 { 5.0E+5, 1.157E-5}, 208 { 5.0E+5, 1.157E-5},
200 { 4.0E+5, 1.442E-5}, 209 { 4.0E+5, 1.442E-5},
201 { 3.0E+5, 1.913E-5}, 210 { 3.0E+5, 1.913E-5},
202 { 2.0E+5, 2.845E-5}, 211 { 2.0E+5, 2.845E-5},
203 { 1.5E+5, 3.762E-5}, 212 { 1.5E+5, 3.762E-5},
204 213
205 { 1.0E+5, 5.554E-5}, 214 { 1.0E+5, 5.554E-5},
206 { 8.0E+4, 6.866E-5}, 215 { 8.0E+4, 6.866E-5},
207 { 6.0E+4, 9.020E-5}, 216 { 6.0E+4, 9.020E-5},
208 { 5.0E+4, 1.070E-4}, 217 { 5.0E+4, 1.070E-4},
209 { 4.0E+4, 1.319E-4}, 218 { 4.0E+4, 1.319E-4},
210 { 3.0E+4, 1.722E-4}, 219 { 3.0E+4, 1.722E-4},
211 { 2.0E+4, 2.499E-4}, 220 { 2.0E+4, 2.499E-4},
212 { 1.5E+4, 3.248E-4}, 221 { 1.5E+4, 3.248E-4},
213 222
214 { 1.0E+4, 4.688E-4}, 223 { 1.0E+4, 4.688E-4},
215 { 8.0E+3, 5.729E-4}, 224 { 8.0E+3, 5.729E-4},
216 { 6.0E+3, 7.411E-4}, 225 { 6.0E+3, 7.411E-4},
217 { 5.0E+3, 8.718E-4}, 226 { 5.0E+3, 8.718E-4},
218 { 4.0E+3, 1.063E-3}, 227 { 4.0E+3, 1.063E-3},
219 { 3.0E+3, 1.370E-3}, 228 { 3.0E+3, 1.370E-3},
220 { 2.0E+3, 1.955E-3}, 229 { 2.0E+3, 1.955E-3},
221 { 1.5E+3, 2.511E-3}, 230 { 1.5E+3, 2.511E-3},
222 231
223 { 1.0E+3, 3.563E-3}, 232 { 1.0E+3, 3.563E-3},
224 { 8.0E+2, 4.314E-3}, 233 { 8.0E+2, 4.314E-3},
225 { 6.0E+2, 5.511E-3}, 234 { 6.0E+2, 5.511E-3},
226 { 5.0E+2, 6.430E-3}, 235 { 5.0E+2, 6.430E-3},
227 { 4.0E+2, 7.756E-3}, 236 { 4.0E+2, 7.756E-3},
228 { 3.0E+2, 9.855E-3}, 237 { 3.0E+2, 9.855E-3},
229 { 2.0E+2, 1.375E-2}, 238 { 2.0E+2, 1.375E-2},
230 { 1.5E+2, 1.736E-2}, 239 { 1.5E+2, 1.736E-2},
231 240
232 { 1.0E+2, 2.395E-2}, 241 { 1.0E+2, 2.395E-2},
233 { 8.0E+1, 2.850E-2}, 242 { 8.0E+1, 2.850E-2},
234 { 6.0E+1, 3.552E-2}, 243 { 6.0E+1, 3.552E-2},
235 { 5.0E+1, 4.073E-2}, 244 { 5.0E+1, 4.073E-2},
236 { 4.0E+1, 4.802E-2}, 245 { 4.0E+1, 4.802E-2},
237 { 3.0E+1, 5.904E-2}, 246 { 3.0E+1, 5.904E-2},
238 { 1.5E+1, 9.426E-2}, 247 { 1.5E+1, 9.426E-2},
239 248
240 { 1.0E+1, 1.210E-1}, 249 { 1.0E+1, 1.210E-1},
241 { 8.0E+0, 1.377E-1}, 250 { 8.0E+0, 1.377E-1},
242 { 6.0E+0, 1.611E-1}, 251 { 6.0E+0, 1.611E-1},
243 { 5.0E+0, 1.768E-1}, 252 { 5.0E+0, 1.768E-1},
244 { 4.0E+0, 1.968E-1}, 253 { 4.0E+0, 1.968E-1},
245 { 3.0E+0, 2.235E-1}, 254 { 3.0E+0, 2.235E-1},
246 { 2.0E+0, 2.613E-1}, 255 { 2.0E+0, 2.613E-1},
247 { 1.5E+0, 2.871E-1}, 256 { 1.5E+0, 2.871E-1},
248 257
249 { 1.0E+0, 3.199E-1}, 258 { 1.0E+0, 3.199E-1},
250 { 8.0E-1, 3.354E-1}, 259 { 8.0E-1, 3.354E-1},
251 { 6.0E-1, 3.523E-1}, 260 { 6.0E-1, 3.523E-1},
252 { 5.0E-1, 3.609E-1}, 261 { 5.0E-1, 3.609E-1},
253 { 4.0E-1, 3.693E-1}, 262 { 4.0E-1, 3.693E-1},
254 { 3.0E-1, 3.766E-1}, 263 { 3.0E-1, 3.766E-1},
255 { 2.0E-1, 3.803E-1}, 264 { 2.0E-1, 3.803E-1},
256 { 1.5E-1, 3.788E-1}, 265 { 1.5E-1, 3.788E-1},
257 266
258 { 1.0E-1, 3.711E-1}, 267 { 1.0E-1, 3.711E-1},
259 { 8.0E-2, 3.644E-1}, 268 { 8.0E-2, 3.644E-1},
260 { 6.0E-2, 3.530E-1}, 269 { 6.0E-2, 3.530E-1},
261 { 5.0E-2, 3.444E-1}, 270 { 5.0E-2, 3.444E-1},
262 { 4.0E-2, 3.323E-1}, 271 { 4.0E-2, 3.323E-1},
263 { 3.0E-2, 3.144E-1}, 272 { 3.0E-2, 3.144E-1},
264 { 2.0E-2, 2.854E-1}, 273 { 2.0E-2, 2.854E-1},
265 { 1.5E-2, 2.629E-1}, 274 { 1.5E-2, 2.629E-1},
266 275
267 { 1.0E-2, 2.298E-1}, 276 { 1.0E-2, 2.298E-1},
268 { 8.0E-3, 2.115E-1}, 277 { 8.0E-3, 2.115E-1},
269 { 6.0E-3, 1.883E-1}, 278 { 6.0E-3, 1.883E-1},
270 { 5.0E-3, 1.741E-1}, 279 { 5.0E-3, 1.741E-1},
271 { 4.0E-3, 1.574E-1}, 280 { 4.0E-3, 1.574E-1},
272 { 3.0E-3, 1.372E-1}, 281 { 3.0E-3, 1.372E-1},
273 { 2.0E-3, 1.116E-1}, 282 { 2.0E-3, 1.116E-1},
274 { 1.5E-3, 9.559E-2}, 283 { 1.5E-3, 9.559E-2},
275 284
276 { 1.0E-3, 7.601E-2}, 285 { 1.0E-3, 7.601E-2},
277 { 8.0E-4, 6.668E-2}, 286 { 8.0E-4, 6.668E-2},
278 { 6.0E-4, 5.605E-2}, 287 { 6.0E-4, 5.605E-2},
279 { 5.0E-4, 5.008E-2}, 288 { 5.0E-4, 5.008E-2},
280 { 4.0E-4, 4.352E-2}, 289 { 4.0E-4, 4.352E-2},
281 { 3.0E-4, 3.617E-2}, 290 { 3.0E-4, 3.617E-2},
282 { 2.0E-4, 2.768E-2}, 291 { 2.0E-4, 2.768E-2},
283 { 1.5E-4, 2.279E-2}, 292 { 1.5E-4, 2.279E-2},
284 293
285 { 1.0E-4, 1.723E-2}, 294 { 1.0E-4, 1.723E-2},
286 { 8.0E-5, 1.473E-2}, 295 { 8.0E-5, 1.473E-2},
287 { 6.0E-5, 1.200E-2}, 296 { 6.0E-5, 1.200E-2},
288 { 5.0E-5, 1.052E-2}, 297 { 5.0E-5, 1.052E-2},
289 { 4.0E-5, 8.950E-3}, 298 { 4.0E-5, 8.950E-3},
290 { 3.0E-5, 7.246E-3}, 299 { 3.0E-5, 7.246E-3},
291 { 2.0E-5, 5.358E-3}, 300 { 2.0E-5, 5.358E-3},
292 { 1.5E-5, 4.313E-3}, 301 { 1.5E-5, 4.313E-3},
293 { 0.0, 3.166E-3} 302 { 0.0, 3.166E-3}
294 }; 303 };
295 304
296 if (er >= nuca[0][0]) { nloss = nuca[0][1]; << 305 for(G4int i=0; i<104; ++i) {
297 else { << 306 ed[i] = nuca[i][0];
298 // the table is inverse in energy << 307 ad[i] = nuca[i][1];
299 for (G4int i=102; i>=0; --i) { <<
300 G4double edi = nuca[i][0]; <<
301 if (er <= edi) { <<
302 G4double edi1 = nuca[i+1][0]; <<
303 G4double ai = nuca[i][1]; <<
304 G4double ai1 = nuca[i+1][1]; <<
305 nloss = (ai - ai1)*(er - edi1)/(edi - <<
306 break; <<
307 } <<
308 } <<
309 } <<
310 <<
311 // Stragling <<
312 if(lossFlucFlag) { <<
313 G4double sig = 4.0 * mass1 * mass2 / ((mas <<
314 (4.0 + 0.197/(er*er) + 6.584/er)); <<
315 <<
316 nloss *= G4RandGauss::shoot(1.0,sig); <<
317 } 308 }
318 <<
319 nloss *= 8.462 * z12 * mass1 / rm; // Return <<
320 <<
321 nloss = std::max(nloss, 0.0); <<
322 return nloss; <<
323 } 309 }
324 310
325 //....oooOO0OOooo........oooOO0OOooo........oo 311 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
326 312