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>> 22 //
>> 23 //
>> 24 // $Id: G4IonisParamMat.cc,v 1.10 2002/10/29 16:17:05 vnivanch Exp $
>> 25 // GEANT4 tag $Name: geant4-05-00 $
>> 26 //
>> 27 //
>> 28 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
25 29
26 // 09-07-98, data moved from G4Material, M.Mai <<
27 // 18-07-98, bug corrected in ComputeDensityEf <<
28 // 16-01-01, bug corrected in ComputeDensityEf <<
29 // 08-02-01, fShellCorrectionVector correctly <<
30 // 28-10-02, add setMeanExcitationEnergy (V.Iv 30 // 28-10-02, add setMeanExcitationEnergy (V.Ivanchenko)
31 // 06-09-04, factor 2 to shell correction term << 31 // 08-02-01, fShellCorrectionVector correctly handled (mma)
32 // 10-05-05, add a missing coma in FindMeanExc << 32 // 16-01-01, bug corrected in ComputeDensityEffect() E100eV (L.Urban)
33 // 27-09-07, add computation of parameters for << 33 // 18-07-98, bug corrected in ComputeDensityEffect() for gas
34 // 04-03-08, remove reference to G4NistManager << 34 // 09-07-98, data moved from G4Material, M.Maire
35 // 30-10-09, add G4DensityEffectData class and <<
36 35
37 #include "G4IonisParamMat.hh" << 36 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
38 37
39 #include "G4AtomicShells.hh" << 38 #include "G4IonisParamMat.hh"
40 #include "G4AutoLock.hh" <<
41 #include "G4DensityEffectData.hh" <<
42 #include "G4Exp.hh" <<
43 #include "G4Log.hh" <<
44 #include "G4Material.hh" 39 #include "G4Material.hh"
45 #include "G4NistManager.hh" <<
46 #include "G4PhysicalConstants.hh" <<
47 #include "G4Pow.hh" <<
48 #include "G4SystemOfUnits.hh" <<
49 <<
50 G4DensityEffectData* G4IonisParamMat::fDensity <<
51 <<
52 namespace <<
53 { <<
54 G4Mutex ionisMutex = G4MUTEX_INITIALIZER; <<
55 } <<
56 40
57 //....oooOO0OOooo........oooOO0OOooo........oo 41 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
58 42
59 G4IonisParamMat::G4IonisParamMat(const G4Mater << 43 G4IonisParamMat::G4IonisParamMat(G4Material* material)
>> 44 :fMaterial(material)
60 { 45 {
61 fBirks = 0.; <<
62 fMeanEnergyPerIon = 0.0; <<
63 twoln10 = 2. * G4Pow::GetInstance()->logZ(10 <<
64 <<
65 // minimal set of default parameters for den <<
66 fCdensity = 0.0; <<
67 fD0density = 0.0; <<
68 fAdjustmentFactor = 1.0; <<
69 if (fDensityData == nullptr) { <<
70 fDensityData = new G4DensityEffectData(); <<
71 } <<
72 fDensityEffectCalc = nullptr; <<
73 <<
74 // compute parameters <<
75 ComputeMeanParameters(); 46 ComputeMeanParameters();
76 ComputeDensityEffectParameters(); << 47 ComputeDensityEffect();
77 ComputeFluctModel(); 48 ComputeFluctModel();
78 ComputeIonParameters(); <<
79 } <<
80 <<
81 //....oooOO0OOooo........oooOO0OOooo........oo <<
82 <<
83 G4IonisParamMat::~G4IonisParamMat() <<
84 { <<
85 delete fDensityEffectCalc; <<
86 delete[] fShellCorrectionVector; <<
87 delete fDensityData; <<
88 fDensityData = nullptr; <<
89 fShellCorrectionVector = nullptr; <<
90 fDensityEffectCalc = nullptr; <<
91 } <<
92 <<
93 //....oooOO0OOooo........oooOO0OOooo........oo <<
94 <<
95 G4double G4IonisParamMat::GetDensityCorrection <<
96 { <<
97 // x = log10(beta*gamma) <<
98 G4double y = 0.0; <<
99 if (x < fX0density) { <<
100 if (fD0density > 0.0) { <<
101 y = fD0density * G4Exp(twoln10 * (x - fX <<
102 } <<
103 } <<
104 else if (x >= fX1density) { <<
105 y = twoln10 * x - fCdensity; <<
106 } <<
107 else { <<
108 y = twoln10 * x - fCdensity + fAdensity * <<
109 } <<
110 return y; <<
111 } 49 }
112 50
113 //....oooOO0OOooo........oooOO0OOooo........oo 51 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
114 52
115 void G4IonisParamMat::ComputeMeanParameters() 53 void G4IonisParamMat::ComputeMeanParameters()
116 { 54 {
117 // compute mean excitation energy and shell 55 // compute mean excitation energy and shell correction vector
118 fTaul = (*(fMaterial->GetElementVector()))[0 <<
119 56
120 std::size_t nElements = fMaterial->GetNumber << 57 fTaul = (*(fMaterial->GetElementVector()))[0]->GetIonisation()->GetTaul();
121 const G4ElementVector* elmVector = fMaterial <<
122 const G4double* nAtomsPerVolume = fMaterial- <<
123 58
124 fMeanExcitationEnergy = FindMeanExcitationEn << 59 fMeanExcitationEnergy = 0.;
125 fLogMeanExcEnergy = 0.; 60 fLogMeanExcEnergy = 0.;
126 61
127 // Chemical formula defines mean excitation <<
128 if (fMeanExcitationEnergy > 0.0) { <<
129 fLogMeanExcEnergy = G4Log(fMeanExcitationE <<
130 62
131 // Compute average << 63 for (size_t i=0; i < fMaterial->GetNumberOfElements(); i++) {
132 } << 64 fLogMeanExcEnergy += (fMaterial->GetVecNbOfAtomsPerVolume())[i]
133 else { << 65 *((*(fMaterial->GetElementVector()))[i]->GetZ())
134 for (std::size_t i = 0; i < nElements; ++i << 66 *log((*(fMaterial->GetElementVector()))[i]->GetIonisation()
135 const G4Element* elm = (*elmVector)[i]; << 67 ->GetMeanExcitationEnergy());
136 fLogMeanExcEnergy += <<
137 nAtomsPerVolume[i] * elm->GetZ() * G4L <<
138 } <<
139 fLogMeanExcEnergy /= fMaterial->GetTotNbOf <<
140 fMeanExcitationEnergy = G4Exp(fLogMeanExcE <<
141 } 68 }
142 69
>> 70 fLogMeanExcEnergy /= fMaterial->GetTotNbOfElectPerVolume();
>> 71 fMeanExcitationEnergy = exp(fLogMeanExcEnergy);
>> 72
143 fShellCorrectionVector = new G4double[3]; 73 fShellCorrectionVector = new G4double[3];
144 74
145 for (G4int j = 0; j <= 2; ++j) { << 75 for (G4int j=0; j<=2; j++)
>> 76 {
146 fShellCorrectionVector[j] = 0.; 77 fShellCorrectionVector[j] = 0.;
147 78
148 for (std::size_t k = 0; k < nElements; ++k << 79 for (size_t k=0; k<fMaterial->GetNumberOfElements(); k++)
149 fShellCorrectionVector[j] += << 80 fShellCorrectionVector[j] += (fMaterial->GetVecNbOfAtomsPerVolume())[k]
150 nAtomsPerVolume[k] * (((*elmVector)[k] << 81 *((*(fMaterial->GetElementVector()))[k]->GetIonisation()
151 } << 82 ->GetShellCorrectionVector()[j]);
152 fShellCorrectionVector[j] *= 2.0 / fMateri << 83
153 } << 84 fShellCorrectionVector[j] /= fMaterial->GetTotNbOfElectPerVolume();
>> 85 }
154 } 86 }
155 87
156 //....oooOO0OOooo........oooOO0OOooo........oo 88 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
157 << 89
158 G4DensityEffectData* G4IonisParamMat::GetDensi << 90 void G4IonisParamMat::ComputeDensityEffect()
159 return fDensityData; <<
160 } <<
161 <<
162 //....oooOO0OOooo........oooOO0OOooo........oo <<
163 <<
164 void G4IonisParamMat::ComputeDensityEffectPara <<
165 { 91 {
166 G4State State = fMaterial->GetState(); << 92 // Compute parameters for the density effect correction in DE/Dx formula.
167 G4double density = fMaterial->GetDensity(); << 93 // The parametrization is from R.M. Sternheimer, Phys. Rev.B,3:3681 (1971)
168 <<
169 // Check if density effect data exist in the <<
170 // R.M. Sternheimer, Atomic Data and Nuclear <<
171 // or is assign to one of data set in this t <<
172 G4int idx = fDensityData->GetIndex(fMaterial <<
173 auto nelm = (G4int)fMaterial->GetNumberOfEle <<
174 G4int Z0 = ((*(fMaterial->GetElementVector() <<
175 const G4Material* bmat = fMaterial->GetBaseM <<
176 G4NistManager* nist = G4NistManager::Instanc <<
177 <<
178 // arbitrary empirical limits <<
179 // parameterisation with very different dens <<
180 static const G4double corrmax = 1.; <<
181 static const G4double massfracmax = 0.9; <<
182 <<
183 // for simple non-NIST materials <<
184 G4double corr = 0.0; <<
185 <<
186 if (idx < 0 && 1 == nelm) { <<
187 G4int z = (1 == Z0 && State == kStateLiqui <<
188 idx = fDensityData->GetElementIndex(z); <<
189 <<
190 // Correction for base material or for non <<
191 // Except cases of very different density <<
192 if (idx >= 0 && 0 < z) { <<
193 G4double dens = nist->GetNominalDensity( <<
194 if (dens <= 0.0) { <<
195 idx = -1; <<
196 } <<
197 else { <<
198 corr = G4Log(dens / density); <<
199 if (std::abs(corr) > corrmax) { <<
200 idx = -1; <<
201 } <<
202 } <<
203 } <<
204 } <<
205 // for base material case <<
206 if (idx < 0 && nullptr != bmat) { <<
207 idx = fDensityData->GetIndex(bmat->GetName <<
208 if (idx >= 0) { <<
209 corr = G4Log(bmat->GetDensity() / densit <<
210 if (std::abs(corr) > corrmax) { <<
211 idx = -1; <<
212 } <<
213 } <<
214 } <<
215 94
216 // for compound non-NIST materials with one << 95 const G4double Cd2 = 4*pi*hbarc_squared*classic_electr_radius;
217 if (idx < 0 && 1 < nelm) { << 96 const G4double twoln10 = 2.*log(10.);
218 const G4double tot = fMaterial->GetTotNbOf <<
219 for (G4int i = 0; i < nelm; ++i) { <<
220 const G4double frac = fMaterial->GetVecN <<
221 if (frac > massfracmax) { <<
222 Z0 = ((*(fMaterial->GetElementVector() <<
223 idx = fDensityData->GetElementIndex(Z0 <<
224 G4double dens = nist->GetNominalDensit <<
225 if (idx >= 0 && dens > 0.0) { <<
226 corr = G4Log(dens / density); <<
227 if (std::abs(corr) > corrmax) { <<
228 idx = -1; <<
229 } <<
230 else { <<
231 break; <<
232 } <<
233 } <<
234 } <<
235 } <<
236 } <<
237 97
238 if (idx >= 0) { << 98 G4int icase;
239 // Take parameters for the density effect << 99
240 // R.M. Sternheimer et al. Density Effect << 100 fCdensity = 1. + log(fMeanExcitationEnergy*fMeanExcitationEnergy
241 // of Charged Particles in Various Substan << 101 /(Cd2*fMaterial->GetTotNbOfElectPerVolume()));
242 // Atom. Data Nucl. Data Tabl. 30 (1984) 2 <<
243 <<
244 fCdensity = fDensityData->GetCdensity(idx) <<
245 fMdensity = fDensityData->GetMdensity(idx) <<
246 fAdensity = fDensityData->GetAdensity(idx) <<
247 fX0density = fDensityData->GetX0density(id <<
248 fX1density = fDensityData->GetX1density(id <<
249 fD0density = fDensityData->GetDelta0densit <<
250 fPlasmaEnergy = fDensityData->GetPlasmaEne <<
251 fAdjustmentFactor = fDensityData->GetAdjus <<
252 <<
253 // parameter C is computed and not taken f <<
254 // fCdensity = 1. + 2*G4Log(fMeanExcitatio <<
255 // G4cout << "IonisParamMat: " << fMateria <<
256 // << " Cst= " << Cdensity << " C= " <<
257 <<
258 // correction on nominal density <<
259 fCdensity += corr; <<
260 fX0density += corr / twoln10; <<
261 fX1density += corr / twoln10; <<
262 } <<
263 else { <<
264 static const G4double Cd2 = 4 * CLHEP::pi <<
265 fPlasmaEnergy = std::sqrt(Cd2 * fMaterial- <<
266 <<
267 // Compute parameters for the density effe <<
268 // The parametrization is from R.M. Sternh <<
269 G4int icase; <<
270 <<
271 fCdensity = 1. + 2 * G4Log(fMeanExcitation <<
272 // <<
273 // condensed materials <<
274 // <<
275 if ((State == kStateSolid) || (State == kS <<
276 static const G4double E100eV = 100. * CL <<
277 static const G4double ClimiS[] = {3.681, <<
278 static const G4double X0valS[] = {1.0, 1 <<
279 static const G4double X1valS[] = {2.0, 3 <<
280 102
281 if (fMeanExcitationEnergy < E100eV) { << 103 //
282 icase = 0; << 104 // condensed materials
283 } << 105 //
284 else { << 106 G4State State = fMaterial->GetState();
285 icase = 1; << 107
286 } << 108 if ((State == kStateSolid)||(State == kStateLiquid)) {
287 109
288 if (fCdensity < ClimiS[icase]) { << 110 const G4double E100eV = 100.*eV;
289 fX0density = 0.2; << 111 const G4double ClimiS[] = {3.681 , 5.215 };
290 } << 112 const G4double X0valS[] = {1.0 , 1.5 };
291 else { << 113 const G4double X1valS[] = {2.0 , 3.0 };
292 fX0density = 0.326 * fCdensity - X0val << 114
293 } << 115 if(fMeanExcitationEnergy < E100eV) icase = 0;
>> 116 else icase = 1;
>> 117
>> 118 if(fCdensity < ClimiS[icase]) fX0density = 0.2;
>> 119 else fX0density = 0.326*fCdensity-X0valS[icase];
>> 120
>> 121 fX1density = X1valS[icase] ; fMdensity = 3.0;
>> 122
>> 123 //special: Hydrogen
>> 124 if ((fMaterial->GetNumberOfElements()==1)&&(fMaterial->GetZ()==1.)) {
>> 125 fX0density = 0.425; fX1density = 2.0; fMdensity = 5.949;
>> 126 }
>> 127 }
>> 128
>> 129 //
>> 130 // gases
>> 131 //
>> 132 if (State == kStateGas) {
>> 133
>> 134 const G4double ClimiG[] = { 10. , 10.5 , 11. , 11.5 , 12.25 , 13.804};
>> 135 const G4double X0valG[] = { 1.6 , 1.7 , 1.8 , 1.9 , 2.0 , 2.0 };
>> 136 const G4double X1valG[] = { 4.0 , 4.0 , 4.0 , 4.0 , 4.0 , 5.0 };
>> 137
>> 138 icase = 5;
>> 139 fX0density = 0.326*fCdensity-2.5 ; fX1density = 5.0 ; fMdensity = 3. ;
>> 140 while((icase > 0)&&(fCdensity < ClimiG[icase])) icase-- ;
>> 141 fX0density = X0valG[icase] ; fX1density = X1valG[icase] ;
>> 142
>> 143 //special: Hydrogen
>> 144 if ((fMaterial->GetNumberOfElements()==1)&&(fMaterial->GetZ()==1.)) {
>> 145 fX0density = 1.837; fX1density = 3.0; fMdensity = 4.754;
>> 146 }
>> 147
>> 148 //special: Helium
>> 149 if ((fMaterial->GetNumberOfElements()==1)&&(fMaterial->GetZ()==2.)) {
>> 150 fX0density = 2.191; fX1density = 3.0; fMdensity = 3.297;
>> 151 }
>> 152
>> 153 // change parameters if the gas is not in STP.
>> 154 // For the correction the density(STP) is needed. Density(STP) is calculated here :
>> 155
>> 156 G4double Density = fMaterial->GetDensity();
>> 157 G4double Pressure = fMaterial->GetPressure();
>> 158 G4double Temp = fMaterial->GetTemperature();
>> 159
>> 160 G4double DensitySTP = Density*STP_Pressure*Temp/(Pressure*STP_Temperature);
>> 161
>> 162 G4double ParCorr = log(Density/DensitySTP);
>> 163
>> 164 fCdensity -= ParCorr;
>> 165 fX0density -= ParCorr/twoln10;
>> 166 fX1density -= ParCorr/twoln10;
>> 167 }
>> 168
>> 169 G4double Xa = fCdensity/twoln10;
>> 170 fAdensity = twoln10*(Xa-fX0density)
>> 171 /pow((fX1density-fX0density),fMdensity);
>> 172 }
294 173
295 fX1density = X1valS[icase]; << 174 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
296 fMdensity = 3.0; <<
297 175
298 // special: Hydrogen << 176 void G4IonisParamMat::ComputeFluctModel()
299 if (1 == nelm && 1 == Z0) { << 177 {
300 fX0density = 0.425; << 178 // compute parameters for the energy loss fluctuation model
301 fX1density = 2.0; <<
302 fMdensity = 5.949; <<
303 } <<
304 } <<
305 else { <<
306 // <<
307 // gases <<
308 // <<
309 fMdensity = 3.; <<
310 fX1density = 4.0; <<
311 179
312 if (fCdensity <= 10.) { << 180 // need an 'effective Z' ?????
313 fX0density = 1.6; << 181 G4double Zeff = 0.;
314 } << 182 for (size_t i=0;i<fMaterial->GetNumberOfElements();i++)
315 else if (fCdensity <= 10.5) { << 183 Zeff += (fMaterial->GetFractionVector())[i]
316 fX0density = 1.7; << 184 *((*(fMaterial->GetElementVector()))[i]->GetZ());
317 } << 185
318 else if (fCdensity <= 11.0) { << 186 if (Zeff > 2.) fF2fluct = 2./Zeff ;
319 fX0density = 1.8; << 187 else fF2fluct = 0.;
320 } << 188
321 else if (fCdensity <= 11.5) { << 189 fF1fluct = 1. - fF2fluct;
322 fX0density = 1.9; << 190 fEnergy2fluct = 10.*Zeff*Zeff*eV;
323 } << 191 fLogEnergy2fluct = log(fEnergy2fluct);
324 else if (fCdensity <= 12.25) { << 192 fLogEnergy1fluct = (fLogMeanExcEnergy - fF2fluct*fLogEnergy2fluct)
325 fX0density = 2.0; << 193 /fF1fluct;
326 } << 194 fEnergy1fluct = exp(fLogEnergy1fluct);
327 else if (fCdensity <= 13.804) { << 195 fEnergy0fluct = 10.*eV;
328 fX0density = 2.0; << 196 fRateionexcfluct = 0.4;
329 fX1density = 5.0; << 197 }
330 } <<
331 else { <<
332 fX0density = 0.326 * fCdensity - 2.5; <<
333 fX1density = 5.0; <<
334 } <<
335 198
336 // special: Hydrogen << 199 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
337 if (1 == nelm && 1 == Z0) { <<
338 fX0density = 1.837; <<
339 fX1density = 3.0; <<
340 fMdensity = 4.754; <<
341 } <<
342 200
343 // special: Helium << 201 void G4IonisParamMat::SetMeanExcitationEnergy(G4double value)
344 if (1 == nelm && 2 == Z0) { << 202 {
345 fX0density = 2.191; << 203 if(value == fMeanExcitationEnergy || value <= 0.0) return;
346 fX1density = 3.0; <<
347 fMdensity = 3.297; <<
348 } <<
349 } <<
350 } <<
351 204
352 // change parameters if the gas is not in ST << 205 if(fMeanExcitationEnergy > 0.0) {
353 // For the correction the density(STP) is ne <<
354 // Density(STP) is calculated here : <<
355 206
356 if (State == kStateGas) { << 207 G4cout << "G4Material: Mean excitation energy is changed for " << fMaterial->GetName()
357 G4double Pressure = fMaterial->GetPressure << 208 << " Iold= " << fMeanExcitationEnergy/eV
358 G4double Temp = fMaterial->GetTemperature( << 209 << "eV; Inew= " << value/eV << " eV;"
>> 210 << G4endl;
>> 211 }
>> 212
>> 213 fMeanExcitationEnergy = value;
>> 214 fLogMeanExcEnergy = log(value);
>> 215
>> 216 }
359 217
360 G4double DensitySTP = density * STP_Pressu << 218 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
361 219
362 G4double ParCorr = G4Log(density / Density << 220 G4double G4IonisParamMat::FindMeanExcitationEnergy(const G4String& chFormula)
>> 221 {
363 222
364 fCdensity -= ParCorr; << 223 // The data on mean excitation energy for compaunds
365 fX0density -= ParCorr / twoln10; << 224 // from "Stopping Powers for Electrons and Positrons"
366 fX1density -= ParCorr / twoln10; << 225 // ICRU Report N#37, 1984 (energy in eV)
367 } <<
368 226
369 // fAdensity parameter can be fixed for not << 227 const size_t numberOfMolecula = 79 ;
370 if (0.0 == fD0density) { << 228
371 G4double Xa = fCdensity / twoln10; << 229 static G4String name[numberOfMolecula] = {
372 fAdensity = twoln10 * (Xa - fX0density) / << 230
>> 231 // gas
>> 232 "NH_3", "C_4H_10", "CO_2", "C_2H_6", "C_7H_16",
>> 233 "C_6H_14", "CH_4", "NO", "N_2O", "C_8H_18",
>> 234 "C_5H_12", "C_3H_8", "H_2O-Gas",
>> 235
>> 236 // liquid
>> 237 "C_3H_6O", "C_6H_5NH_2", "C_6H_6", "C_4H_9OH", "CCl_4",
>> 238 "C_6H_5Cl", "CHCl_3", "C_6H_12", "C_6H_4Cl_2", "C_4Cl_2H_8O",
>> 239 "C_2Cl_2H_4", "(C_2H_5)_2O", "C_2H_5OH", "C_3H_5(OH)_3","C_7H_16",
>> 240 "C_6H_14", "CH_3OH", "C_6H_5NO_2","C_5H_12", "C_3H_7OH",
>> 241 "C_5H_5N", "C_8H_8", "C_2Cl_4", "C_7H_8", "C_2Cl_3H",
>> 242 "H_2O", "C_8H_10"
>> 243
>> 244 //solid
>> 245 "C_5H_5N_5", "C_5H_5N_5O", "(C_6H_11NO)-nylon", "C_25H_52",
>> 246 "(C_2H_4)-Polyethylene", "(C_5H_8O-2)-Polymethil_Methacrylate",
>> 247 "(C_8H_8)-Polystyrene", "A-150-tissue", "Al_2O_3", "CaF_2",
>> 248 "LiF", "Photo_Emulsion", "(C_2F_4)-Teflon", "SiO_2"
>> 249
>> 250 } ;
>> 251
>> 252 static G4double meanExcitation[numberOfMolecula] = {
>> 253
>> 254 53.7, 48.3, 85.0, 45.4, 49.2,
>> 255 49.1, 41.7, 87.8, 84.9, 49.5,
>> 256 48.2, 47.1, 71.6,
>> 257
>> 258 64.2, 66.2, 63.4, 59.9, 166.3,
>> 259 89.1, 156.0, 56.4, 106.5, 103.3,
>> 260 111.9, 60.0, 62.9, 72.6, 54.4,
>> 261 54.0, 67.6, 75.8, 53.6, 61.1,
>> 262 66.2, 64.0, 159.2, 62.5, 148.1,
>> 263 75.0, 61.8,
>> 264
>> 265 71.4, 75.0, 63.9, 48.3, 57.4,
>> 266 74.0, 68.7, 65.1, 145.2, 166.,
>> 267 94.0, 331.0, 99.1, 139.2
>> 268
>> 269 } ;
>> 270
>> 271 G4double x = fMeanExcitationEnergy;
>> 272
>> 273 for(size_t i=0; i<numberOfMolecula; i++) {
>> 274 if(chFormula == name[i]) {
>> 275 x = meanExcitation[i]*eV;
>> 276 break;
>> 277 }
373 } 278 }
>> 279 return x;
374 } 280 }
375 281
376 //....oooOO0OOooo........oooOO0OOooo........oo 282 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
377 283
378 void G4IonisParamMat::ComputeFluctModel() << 284 G4IonisParamMat::~G4IonisParamMat()
379 { 285 {
380 // compute parameters for the energy loss fl << 286 if (fShellCorrectionVector) delete [] fShellCorrectionVector;
381 // needs an 'effective Z' <<
382 G4double Zeff = 0.; <<
383 for (std::size_t i = 0; i < fMaterial->GetNu <<
384 Zeff += (fMaterial->GetFractionVector())[i <<
385 } <<
386 if (Zeff > 2.1) { <<
387 fF2fluct = 2.0 / Zeff; <<
388 fF1fluct = 1. - fF2fluct; <<
389 fEnergy2fluct = 10. * Zeff * Zeff * CLHEP: <<
390 fLogEnergy2fluct = G4Log(fEnergy2fluct); <<
391 fLogEnergy1fluct = (fLogMeanExcEnergy - fF <<
392 } else if (Zeff > 1.1) { <<
393 fF2fluct = 0.0; <<
394 fF1fluct = 1.0; <<
395 fEnergy2fluct = 40. * CLHEP::eV; <<
396 fLogEnergy2fluct = G4Log(fEnergy2fluct); <<
397 fLogEnergy1fluct = fLogMeanExcEnergy; <<
398 } else { <<
399 fF2fluct = 0.0; <<
400 fF1fluct = 1.0; <<
401 fEnergy2fluct = 10. * CLHEP::eV; <<
402 fLogEnergy2fluct = G4Log(fEnergy2fluct); <<
403 fLogEnergy1fluct = fLogMeanExcEnergy; <<
404 } <<
405 fEnergy1fluct = G4Exp(fLogEnergy1fluct); <<
406 fEnergy0fluct = 10. * CLHEP::eV; <<
407 fRateionexcfluct = 0.4; <<
408 } 287 }
409 288
410 //....oooOO0OOooo........oooOO0OOooo........oo 289 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
411 290
412 void G4IonisParamMat::ComputeIonParameters() << 291 G4IonisParamMat::G4IonisParamMat(const G4IonisParamMat& right)
413 { 292 {
414 // get elements in the actual material, << 293 *this = right;
415 const G4ElementVector* theElementVector = fM <<
416 const G4double* theAtomicNumDensityVector = <<
417 const auto NumberOfElements = (G4int)fMateri <<
418 <<
419 // loop for the elements in the material <<
420 // to find out average values Z, vF, lF <<
421 G4double z(0.0), vF(0.0), lF(0.0), a23(0.0); <<
422 <<
423 G4Pow* g4pow = G4Pow::GetInstance(); <<
424 if (1 == NumberOfElements) { <<
425 const G4Element* element = (*theElementVec <<
426 z = element->GetZ(); <<
427 vF = element->GetIonisation()->GetFermiVel <<
428 lF = element->GetIonisation()->GetLFactor( <<
429 a23 = 1.0 / g4pow->A23(element->GetN()); <<
430 } <<
431 else { <<
432 G4double norm(0.0); <<
433 for (G4int iel = 0; iel < NumberOfElements <<
434 const G4Element* element = (*theElementV <<
435 const G4double weight = theAtomicNumDens <<
436 norm += weight; <<
437 z += element->GetZ() * weight; <<
438 vF += element->GetIonisation()->GetFermi <<
439 lF += element->GetIonisation()->GetLFact <<
440 a23 += weight / g4pow->A23(element->GetN <<
441 } <<
442 if (norm > 0.0) { norm = 1.0/norm; } <<
443 z *= norm; <<
444 vF *= norm; <<
445 lF *= norm; <<
446 a23 *= norm; <<
447 } <<
448 fZeff = z; <<
449 fLfactor = lF; <<
450 fFermiEnergy = 25. * CLHEP::keV * vF * vF; <<
451 fInvA23 = a23; <<
452 } 294 }
453 295
454 //....oooOO0OOooo........oooOO0OOooo........oo 296 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
455 297
456 void G4IonisParamMat::SetMeanExcitationEnergy( << 298 const G4IonisParamMat& G4IonisParamMat::operator=(const G4IonisParamMat& right)
457 { 299 {
458 if (value == fMeanExcitationEnergy || value << 300 if (this != &right)
459 return; << 301 {
460 } << 302 fMaterial = right.fMaterial;
461 if (G4NistManager::Instance()->GetVerbose() << 303 fMeanExcitationEnergy = right.fMeanExcitationEnergy;
462 G4cout << "G4Material: Mean excitation ene << 304 fLogMeanExcEnergy = right.fLogMeanExcEnergy;
463 << " Iold= " << fMeanExcitationEner << 305 if (fShellCorrectionVector) delete [] fShellCorrectionVector;
464 << G4endl; << 306 fShellCorrectionVector = new G4double[3];
465 } << 307 fShellCorrectionVector[0] = right.fShellCorrectionVector[0];
466 << 308 fShellCorrectionVector[1] = right.fShellCorrectionVector[1];
467 fMeanExcitationEnergy = value; << 309 fShellCorrectionVector[2] = right.fShellCorrectionVector[2];
468 << 310 fTaul = right.fTaul;
469 // add corrections to density effect << 311 fCdensity = right.fCdensity;
470 G4double newlog = G4Log(value); << 312 fMdensity = right.fMdensity;
471 G4double corr = 2 * (newlog - fLogMeanExcEne << 313 fAdensity = right.fAdensity;
472 fCdensity += corr; << 314 fX0density = right.fX0density;
473 fX0density += corr / twoln10; << 315 fX1density = right.fX1density;
474 fX1density += corr / twoln10; << 316 fF1fluct = right.fF1fluct;
475 << 317 fF2fluct = right.fF2fluct;
476 // recompute parameters of fluctuation model << 318 fEnergy1fluct = right.fEnergy1fluct;
477 fLogMeanExcEnergy = newlog; << 319 fLogEnergy1fluct = right.fLogEnergy1fluct;
478 ComputeFluctModel(); << 320 fEnergy2fluct = right.fEnergy2fluct;
>> 321 fLogEnergy2fluct = right.fLogEnergy2fluct;
>> 322 fEnergy0fluct = right.fEnergy0fluct;
>> 323 fRateionexcfluct = right.fRateionexcfluct;
>> 324 }
>> 325 return *this;
479 } 326 }
480 327
481 //....oooOO0OOooo........oooOO0OOooo........oo 328 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
482 329
483 void G4IonisParamMat::SetDensityEffectParamete << 330 G4int G4IonisParamMat::operator==(const G4IonisParamMat& right) const
484 G4double cd, G4double md, G4double ad, G4dou <<
485 { 331 {
486 // no check on consistence of user parameter << 332 return (this == (G4IonisParamMat*) &right);
487 G4AutoLock l(&ionisMutex); <<
488 fCdensity = cd; <<
489 fMdensity = md; <<
490 fAdensity = ad; <<
491 fX0density = x0; <<
492 fX1density = x1; <<
493 fD0density = d0; <<
494 l.unlock(); <<
495 } 333 }
496 334
497 //....oooOO0OOooo........oooOO0OOooo........oo 335 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
498 336
499 void G4IonisParamMat::SetDensityEffectParamete << 337 G4int G4IonisParamMat::operator!=(const G4IonisParamMat& right) const
500 { << 338 {
501 G4AutoLock l(&ionisMutex); << 339 return (this != (G4IonisParamMat*) &right);
502 const G4IonisParamMat* ipm = bmat->GetIonisa <<
503 fCdensity = ipm->GetCdensity(); <<
504 fMdensity = ipm->GetMdensity(); <<
505 fAdensity = ipm->GetAdensity(); <<
506 fX0density = ipm->GetX0density(); <<
507 fX1density = ipm->GetX1density(); <<
508 fD0density = ipm->GetD0density(); <<
509 <<
510 G4double corr = G4Log(bmat->GetDensity() / f <<
511 fCdensity += corr; <<
512 fX0density += corr / twoln10; <<
513 fX1density += corr / twoln10; <<
514 l.unlock(); <<
515 } <<
516 <<
517 //....oooOO0OOooo........oooOO0OOooo........oo <<
518 <<
519 void G4IonisParamMat::ComputeDensityEffectOnFl <<
520 { <<
521 if (val) { <<
522 if (nullptr == fDensityEffectCalc) { <<
523 G4int n = 0; <<
524 for (std::size_t i = 0; i < fMaterial->G <<
525 const G4int Z = fMaterial->GetElement( <<
526 n += G4AtomicShells::GetNumberOfShells <<
527 } <<
528 // The last level is the conduction leve <<
529 // make a dummy conductor level with zer <<
530 fDensityEffectCalc = new G4DensityEffect <<
531 } <<
532 } <<
533 else { <<
534 delete fDensityEffectCalc; <<
535 fDensityEffectCalc = nullptr; <<
536 } <<
537 } 340 }
538 341
539 //....oooOO0OOooo........oooOO0OOooo........oo 342 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.... ....oooOO0OOooo....
540 343
541 G4double G4IonisParamMat::FindMeanExcitationEn <<
542 { <<
543 G4double res = 0.0; <<
544 // data from density effect data <<
545 if (fDensityData != nullptr) { <<
546 G4int idx = fDensityData->GetIndex(mat->Ge <<
547 if (idx >= 0) { <<
548 res = fDensityData->GetMeanIonisationPot <<
549 } <<
550 } <<
551 <<
552 // The data on mean excitation energy for co <<
553 // from "Stopping Powers for Electrons and P <<
554 // ICRU Report N#37, 1984 (energy in eV) <<
555 // this value overwrites Density effect data <<
556 G4String chFormula = mat->GetChemicalFormula <<
557 if (! chFormula.empty()) { <<
558 static const size_t numberOfMolecula = 54; <<
559 // clang-format off <<
560 static const G4String name[numberOfMolecul <<
561 // gas 0 - 12 <<
562 "NH_3", "C_4H_10", "CO_2", <<
563 // "G4_AMMONIA", "G4_BUTANE","G4_CARBON_ <<
564 "C_6H_14-Gas", "CH_4", "NO", <<
565 // "G4_N-HEXANE" , "G4_METHANE", "x", "G <<
566 "C_5H_12-Gas", "C_3H_8", "H_2O-Gas", <<
567 // "G4_N-PENTANE", "G4_PROPANE", "G4_WAT <<
568 <<
569 // liquid 13 - 39 <<
570 "C_3H_6O", "C_6H_5NH_2", "C_6H_6", <<
571 //"G4_ACETONE","G4_ANILINE","G4_BENZENE" <<
572 "C_6H_5Cl", "CHCl_3", "C_6H_12", <<
573 //"G4_CHLOROBENZENE","G4_CHLOROFORM","G4 <<
574 //"G4_DICHLORODIETHYL_ETHER" <<
575 "C_2Cl_2H_4", "(C_2H_5)_2O", "C_2H_5OH", <<
576 //"G4_1,2-DICHLOROETHANE","G4_DIETHYL_ET <<
577 "C_6H_14", "CH_3OH", "C_6H_5NO_2 <<
578 //"G4_N-HEXANE","G4_METHANOL","G4_NITROB <<
579 "C_5H_5N", "C_8H_8", "C_2Cl_4", <<
580 //"G4_PYRIDINE","G4_POLYSTYRENE","G4_TET <<
581 "H_2O", "C_8H_10", <<
582 // "G4_WATER", "G4_XYLENE" <<
583 <<
584 // solid 40 - 53 <<
585 "C_5H_5N_5", "C_5H_5N_5O", "(C_6H_11NO <<
586 // "G4_ADENINE", "G4_GUANINE", "G4_NYLON <<
587 "(C_2H_4)-Polyethylene", "(C_5H_8O_2 <<
588 // "G4_ETHYLENE", "G4_PLEXIGLASS" <<
589 "(C_8H_8)-Polystyrene", "A-150-tiss <<
590 // "G4_POLYSTYRENE", "G4_A-150_TISSUE", <<
591 "LiF", "Photo_Emulsion", "(C_2F_ <<
592 // "G4_LITHIUM_FLUORIDE", "G4_PHOTO_EMUL <<
593 } ; <<
594 <<
595 static const G4double meanExcitation[numbe <<
596 <<
597 53.7, 48.3, 85.0, 45.4, 49.2, <<
598 49.1, 41.7, 87.8, 84.9, 49.5, <<
599 48.2, 47.1, 71.6, <<
600 <<
601 64.2, 66.2, 63.4, 59.9, 166.3, <<
602 89.1, 156.0, 56.4, 106.5, 103.3, <<
603 111.9, 60.0, 62.9, 72.6, 54.4, <<
604 54.0, 67.6, 75.8, 53.6, 61.1, <<
605 66.2, 64.0, 159.2, 62.5, 148.1, <<
606 75.0, 61.8, <<
607 <<
608 71.4, 75.0, 63.9, 48.3, 57.4, <<
609 74.0, 68.7, 65.1, 145.2, 166., <<
610 94.0, 331.0, 99.1, 139.2 <<
611 }; <<
612 // clang-format on <<
613 <<
614 for (std::size_t i = 0; i < numberOfMolecu <<
615 if (chFormula == name[i]) { <<
616 res = meanExcitation[i] * CLHEP::eV; <<
617 break; <<
618 } <<
619 } <<
620 } <<
621 return res; <<
622 } <<
623 344