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27 // 27 //
28 // GEANT4 Class header file 28 // GEANT4 Class header file
29 // 29 //
30 // 30 //
31 // File name: G4LindhardSorensenIonModel 31 // File name: G4LindhardSorensenIonModel
32 // 32 //
33 // Author: Alexander Bagulya & Vladimir 33 // Author: Alexander Bagulya & Vladimir Ivanchenko
34 // 34 //
35 // Creation date: 16.04.2018 35 // Creation date: 16.04.2018
36 // 36 //
37 // 37 //
38 // ------------------------------------------- 38 // -------------------------------------------------------------------
39 // 39 //
40 40
41 //....oooOO0OOooo........oooOO0OOooo........oo 41 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
42 //....oooOO0OOooo........oooOO0OOooo........oo 42 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
43 43
44 #include "G4LindhardSorensenIonModel.hh" 44 #include "G4LindhardSorensenIonModel.hh"
45 #include "Randomize.hh" 45 #include "Randomize.hh"
46 #include "G4PhysicalConstants.hh" 46 #include "G4PhysicalConstants.hh"
47 #include "G4SystemOfUnits.hh" 47 #include "G4SystemOfUnits.hh"
48 #include "G4Electron.hh" 48 #include "G4Electron.hh"
49 #include "G4LossTableManager.hh" 49 #include "G4LossTableManager.hh"
50 #include "G4EmCorrections.hh" 50 #include "G4EmCorrections.hh"
51 #include "G4ParticleChangeForLoss.hh" 51 #include "G4ParticleChangeForLoss.hh"
52 #include "G4Log.hh" 52 #include "G4Log.hh"
53 #include "G4DeltaAngle.hh" 53 #include "G4DeltaAngle.hh"
54 #include "G4LindhardSorensenData.hh" 54 #include "G4LindhardSorensenData.hh"
55 #include "G4BraggModel.hh" << 55 #include "G4BraggIonModel.hh"
56 #include "G4BetheBlochModel.hh" 56 #include "G4BetheBlochModel.hh"
57 #include "G4IonICRU73Data.hh" 57 #include "G4IonICRU73Data.hh"
58 #include "G4AutoLock.hh" <<
59 58
60 //....oooOO0OOooo........oooOO0OOooo........oo 59 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
61 60
62 using namespace std; 61 using namespace std;
63 62
64 G4LindhardSorensenData* G4LindhardSorensenIonM 63 G4LindhardSorensenData* G4LindhardSorensenIonModel::lsdata = nullptr;
65 G4IonICRU73Data* G4LindhardSorensenIonModel::f 64 G4IonICRU73Data* G4LindhardSorensenIonModel::fIonData = nullptr;
66 << 65 std::vector<G4float>* G4LindhardSorensenIonModel::fact[] = {nullptr};
67 namespace <<
68 { <<
69 G4Mutex ionXSMutex = G4MUTEX_INITIALIZER; <<
70 } <<
71 66
72 G4LindhardSorensenIonModel::G4LindhardSorensen 67 G4LindhardSorensenIonModel::G4LindhardSorensenIonModel(const G4ParticleDefinition*,
73 68 const G4String& nam)
74 : G4VEmModel(nam), 69 : G4VEmModel(nam),
>> 70 particle(nullptr),
75 twoln10(2.0*G4Log(10.0)) 71 twoln10(2.0*G4Log(10.0))
76 { 72 {
>> 73 fParticleChange = nullptr;
77 theElectron = G4Electron::Electron(); 74 theElectron = G4Electron::Electron();
78 corr = G4LossTableManager::Instance()->EmCor 75 corr = G4LossTableManager::Instance()->EmCorrections();
79 nist = G4NistManager::Instance(); 76 nist = G4NistManager::Instance();
80 fBraggModel = new G4BraggModel(); << 77 fBraggModel = new G4BraggIonModel();
81 fBBModel = new G4BetheBlochModel(); 78 fBBModel = new G4BetheBlochModel();
82 fElimit = 2.0*CLHEP::MeV; 79 fElimit = 2.0*CLHEP::MeV;
83 } 80 }
84 81
85 //....oooOO0OOooo........oooOO0OOooo........oo 82 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
86 83
87 G4LindhardSorensenIonModel::~G4LindhardSorense << 84 G4LindhardSorensenIonModel::~G4LindhardSorensenIonModel() = default;
88 if(isFirst) { <<
89 delete lsdata; <<
90 delete fIonData; <<
91 lsdata = nullptr; <<
92 fIonData = nullptr; <<
93 } <<
94 } <<
95 85
96 //....oooOO0OOooo........oooOO0OOooo........oo 86 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
97 87
98 void G4LindhardSorensenIonModel::Initialise(co 88 void G4LindhardSorensenIonModel::Initialise(const G4ParticleDefinition* p,
99 co 89 const G4DataVector& ptr)
100 { 90 {
101 fBraggModel->Initialise(p, ptr); 91 fBraggModel->Initialise(p, ptr);
102 fBBModel->Initialise(p, ptr); 92 fBBModel->Initialise(p, ptr);
103 SetParticle(p); 93 SetParticle(p);
>> 94 //G4cout << "G4LindhardSorensenIonModel::Initialise for "
>> 95 // << p->GetParticleName() << G4endl;
104 96
105 // always false before the run 97 // always false before the run
106 SetDeexcitationFlag(false); 98 SetDeexcitationFlag(false);
107 99
108 if(nullptr == fParticleChange) { 100 if(nullptr == fParticleChange) {
109 fParticleChange = GetParticleChangeForLoss 101 fParticleChange = GetParticleChangeForLoss();
110 if(UseAngularGeneratorFlag() && nullptr == 102 if(UseAngularGeneratorFlag() && nullptr == GetAngularDistribution()) {
111 SetAngularDistribution(new G4DeltaAngle( 103 SetAngularDistribution(new G4DeltaAngle());
112 } 104 }
113 } 105 }
114 if(nullptr == lsdata) { << 106 if(IsMaster()) {
115 G4AutoLock l(&ionXSMutex); <<
116 if(nullptr == lsdata) { 107 if(nullptr == lsdata) {
117 isFirst = true; <<
118 lsdata = new G4LindhardSorensenData(); 108 lsdata = new G4LindhardSorensenData();
>> 109 }
>> 110 if(nullptr == fIonData) {
119 fIonData = new G4IonICRU73Data(); 111 fIonData = new G4IonICRU73Data();
120 } 112 }
121 l.unlock(); <<
122 } <<
123 if(isFirst) { <<
124 fIonData->Initialise(); 113 fIonData->Initialise();
125 } 114 }
126 } 115 }
127 116
128 //....oooOO0OOooo........oooOO0OOooo........oo 117 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
129 118
130 G4double 119 G4double
131 G4LindhardSorensenIonModel::GetChargeSquareRat 120 G4LindhardSorensenIonModel::GetChargeSquareRatio(const G4ParticleDefinition* p,
132 121 const G4Material* mat,
133 122 G4double kinEnergy)
134 { 123 {
135 chargeSquare = corr->EffectiveChargeSquareRa << 124 chargeSquare = corr->EffectiveChargeSquareRatio(p,mat,kinEnergy);
136 return chargeSquare; 125 return chargeSquare;
137 } 126 }
138 127
139 //....oooOO0OOooo........oooOO0OOooo........oo 128 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
140 129
141 G4double 130 G4double
142 G4LindhardSorensenIonModel::GetParticleCharge( 131 G4LindhardSorensenIonModel::GetParticleCharge(const G4ParticleDefinition* p,
143 132 const G4Material* mat,
144 133 G4double kinEnergy)
145 { 134 {
146 return corr->GetParticleCharge(p,mat,kinEner 135 return corr->GetParticleCharge(p,mat,kinEnergy);
147 } 136 }
148 137
149 //....oooOO0OOooo........oooOO0OOooo........oo 138 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
150 139
151 void G4LindhardSorensenIonModel::SetupParamete 140 void G4LindhardSorensenIonModel::SetupParameters()
152 { 141 {
153 mass = particle->GetPDGMass(); 142 mass = particle->GetPDGMass();
154 spin = particle->GetPDGSpin(); 143 spin = particle->GetPDGSpin();
155 charge = particle->GetPDGCharge()*inveplus; 144 charge = particle->GetPDGCharge()*inveplus;
156 Zin = G4lrint(std::abs(charge)); 145 Zin = G4lrint(std::abs(charge));
157 chargeSquare = charge*charge; 146 chargeSquare = charge*charge;
158 eRatio = CLHEP::electron_mass_c2/mass; 147 eRatio = CLHEP::electron_mass_c2/mass;
159 pRatio = CLHEP::proton_mass_c2/mass; 148 pRatio = CLHEP::proton_mass_c2/mass;
160 const G4double aMag = 149 const G4double aMag =
161 1./(0.5*CLHEP::eplus*CLHEP::hbar_Planck*CL 150 1./(0.5*CLHEP::eplus*CLHEP::hbar_Planck*CLHEP::c_squared);
162 G4double magmom = particle->GetPDGMagneticMo 151 G4double magmom = particle->GetPDGMagneticMoment()*mass*aMag;
163 magMoment2 = magmom*magmom - 1.0; 152 magMoment2 = magmom*magmom - 1.0;
164 G4double x = 0.8426*CLHEP::GeV; 153 G4double x = 0.8426*CLHEP::GeV;
165 if(spin == 0.0 && mass < GeV) { x = 0.736*CL 154 if(spin == 0.0 && mass < GeV) { x = 0.736*CLHEP::GeV; }
166 else if (Zin > 1) { x /= nist->GetA27(Zin); 155 else if (Zin > 1) { x /= nist->GetA27(Zin); }
167 156
168 formfact = 2.0*CLHEP::electron_mass_c2/(x*x) 157 formfact = 2.0*CLHEP::electron_mass_c2/(x*x);
169 tlimit = 2.0/formfact; 158 tlimit = 2.0/formfact;
170 } 159 }
171 160
172 //....oooOO0OOooo........oooOO0OOooo........oo 161 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
173 162
174 G4double G4LindhardSorensenIonModel::MinEnergy 163 G4double G4LindhardSorensenIonModel::MinEnergyCut(const G4ParticleDefinition*,
175 const 164 const G4MaterialCutsCouple* couple)
176 { 165 {
177 return couple->GetMaterial()->GetIonisation( 166 return couple->GetMaterial()->GetIonisation()->GetMeanExcitationEnergy();
178 } 167 }
179 168
180 //....oooOO0OOooo........oooOO0OOooo........oo 169 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
181 170
182 G4double 171 G4double
183 G4LindhardSorensenIonModel::ComputeCrossSectio 172 G4LindhardSorensenIonModel::ComputeCrossSectionPerElectron(
184 173 const G4ParticleDefinition* p,
185 174 G4double kinEnergy,
186 175 G4double cutEnergy,
187 176 G4double maxKinEnergy)
188 { 177 {
189 // take into account formfactor 178 // take into account formfactor
190 G4double tmax = MaxSecondaryEnergy(p, kinEne 179 G4double tmax = MaxSecondaryEnergy(p, kinEnergy);
191 G4double emax = std::min(tmax, maxKinEnergy) 180 G4double emax = std::min(tmax, maxKinEnergy);
192 G4double escaled = kinEnergy*pRatio; 181 G4double escaled = kinEnergy*pRatio;
193 G4double cross = (escaled <= fElimit) 182 G4double cross = (escaled <= fElimit)
194 ? fBraggModel->ComputeCrossSectionPerElect 183 ? fBraggModel->ComputeCrossSectionPerElectron(p,kinEnergy,cutEnergy,emax)
195 : fBBModel->ComputeCrossSectionPerElectron 184 : fBBModel->ComputeCrossSectionPerElectron(p,kinEnergy,cutEnergy,emax);
196 // G4cout << "LS: e= " << kinEnergy << " tmi 185 // G4cout << "LS: e= " << kinEnergy << " tmin= " << cutEnergy
197 // << " tmax= " << maxEnergy << " cro 186 // << " tmax= " << maxEnergy << " cross= " << cross << G4endl;
198 return cross; 187 return cross;
199 } 188 }
200 189
201 //....oooOO0OOooo........oooOO0OOooo........oo 190 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
202 191
203 G4double G4LindhardSorensenIonModel::ComputeCr 192 G4double G4LindhardSorensenIonModel::ComputeCrossSectionPerAtom(
204 con 193 const G4ParticleDefinition* p,
205 194 G4double kineticEnergy,
206 195 G4double Z, G4double,
207 196 G4double cutEnergy,
208 197 G4double maxEnergy)
209 { 198 {
210 return Z*ComputeCrossSectionPerElectron(p,ki 199 return Z*ComputeCrossSectionPerElectron(p,kineticEnergy,cutEnergy,maxEnergy);
211 } 200 }
212 201
213 //....oooOO0OOooo........oooOO0OOooo........oo 202 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
214 203
215 G4double G4LindhardSorensenIonModel::CrossSect 204 G4double G4LindhardSorensenIonModel::CrossSectionPerVolume(
216 con 205 const G4Material* material,
217 con 206 const G4ParticleDefinition* p,
218 207 G4double kineticEnergy,
219 208 G4double cutEnergy,
220 209 G4double maxEnergy)
221 { 210 {
222 return material->GetElectronDensity() 211 return material->GetElectronDensity()
223 *ComputeCrossSectionPerElectron(p,kineticE 212 *ComputeCrossSectionPerElectron(p,kineticEnergy,cutEnergy,maxEnergy);
224 } 213 }
225 214
226 //....oooOO0OOooo........oooOO0OOooo........oo 215 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
227 216
228 G4double 217 G4double
229 G4LindhardSorensenIonModel::ComputeDEDXPerVolu 218 G4LindhardSorensenIonModel::ComputeDEDXPerVolume(const G4Material* mat,
230 219 const G4ParticleDefinition* p,
231 220 G4double kinEnergy,
232 221 G4double cut)
233 { 222 {
234 // formfactor is taken into account in Corre 223 // formfactor is taken into account in CorrectionsAlongStep(..)
235 G4double tmax = MaxSecondaryEnergy(p, k 224 G4double tmax = MaxSecondaryEnergy(p, kinEnergy);
236 G4double cutEnergy = std::min(std::min(cut,t 225 G4double cutEnergy = std::min(std::min(cut,tmax), tlimit);
237 226
238 G4double escaled = kinEnergy*pRatio; 227 G4double escaled = kinEnergy*pRatio;
239 G4double dedx = (escaled <= fElimit) 228 G4double dedx = (escaled <= fElimit)
240 ? fBraggModel->ComputeDEDXPerVolume(mat, p 229 ? fBraggModel->ComputeDEDXPerVolume(mat, p, kinEnergy, cutEnergy)
241 : fBBModel->ComputeDEDXPerVolume(mat, p, k 230 : fBBModel->ComputeDEDXPerVolume(mat, p, kinEnergy, cutEnergy);
242 231
243 //G4cout << "E(MeV)=" << kinEnergy/MeV << " 232 //G4cout << "E(MeV)=" << kinEnergy/MeV << " dedx=" << dedx
244 // << " " << mat->GetName() << " Ecut(MeV) << 233 // << " " << material->GetName() << " Ecut(MeV)=" << cutEnergy << G4endl;
245 return dedx; 234 return dedx;
246 } 235 }
247 236
248 //....oooOO0OOooo........oooOO0OOooo........oo 237 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
249 238
250 void G4LindhardSorensenIonModel::CorrectionsAl 239 void G4LindhardSorensenIonModel::CorrectionsAlongStep(
251 const G4Mater 240 const G4MaterialCutsCouple* couple,
252 const G4Dynam 241 const G4DynamicParticle* dp,
253 const G4doubl 242 const G4double& length,
254 G4doubl 243 G4double& eloss)
255 { 244 {
256 // no correction at the last step 245 // no correction at the last step
257 const G4double preKinEnergy = dp->GetKinetic 246 const G4double preKinEnergy = dp->GetKineticEnergy();
258 if(eloss >= preKinEnergy) { return; } 247 if(eloss >= preKinEnergy) { return; }
259 248
260 const G4ParticleDefinition* p = dp->GetDefin 249 const G4ParticleDefinition* p = dp->GetDefinition();
261 SetParticle(p); 250 SetParticle(p);
262 const G4Material* mat = couple->GetMaterial( 251 const G4Material* mat = couple->GetMaterial();
263 const G4double eDensity = mat->GetElectronDe 252 const G4double eDensity = mat->GetElectronDensity();
264 const G4double e = std::max(preKinEnergy - e 253 const G4double e = std::max(preKinEnergy - eloss*0.5, preKinEnergy*0.5);
265 const G4double tmax = MaxSecondaryEnergy(p, 254 const G4double tmax = MaxSecondaryEnergy(p, e);
266 const G4double escaled = e*pRatio; 255 const G4double escaled = e*pRatio;
267 const G4double tau = e/mass; 256 const G4double tau = e/mass;
>> 257
>> 258 const G4double q20 = corr->EffectiveChargeSquareRatio(p, mat, preKinEnergy);
268 const G4double q2 = corr->EffectiveChargeSqu 259 const G4double q2 = corr->EffectiveChargeSquareRatio(p, mat, e);
269 const G4int Z = p->GetAtomicNumber(); 260 const G4int Z = p->GetAtomicNumber();
270 261
271 G4double res = 0.0; 262 G4double res = 0.0;
272 if(escaled <= fElimit) { 263 if(escaled <= fElimit) {
273 // data from ICRU73 or ICRU90 264 // data from ICRU73 or ICRU90
274 if(Z > 2 && Z <= 80) { 265 if(Z > 2 && Z <= 80) {
275 res = fIonData->GetDEDX(mat, Z, escaled, 266 res = fIonData->GetDEDX(mat, Z, escaled, G4Log(escaled));
276 /* 267 /*
277 G4cout << " GetDEDX for Z=" << Z << " in " << 268 G4cout << "GetDEDX for Z=" << Z << " in " << mat->GetName()
278 << " Escaled=" << escaled << " E=" 269 << " Escaled=" << escaled << " E="
279 << e << " dEdx=" << res << G4endl; 270 << e << " dEdx=" << res << G4endl;
280 */ 271 */
281 } 272 }
282 if(res > 0.0) { 273 if(res > 0.0) {
283 auto pcuts = couple->GetProductionCuts() 274 auto pcuts = couple->GetProductionCuts();
284 G4double cut = (nullptr == pcuts) ? tmax 275 G4double cut = (nullptr == pcuts) ? tmax : pcuts->GetProductionCut(1);
285 if(cut < tmax) { 276 if(cut < tmax) {
286 const G4double x = cut/tmax; 277 const G4double x = cut/tmax;
287 res += (G4Log(x)*(tau + 1.)*(tau + 1.)/(tau 278 res += (G4Log(x)*(tau + 1.)*(tau + 1.)/(tau * (tau + 2.0)) + 1.0 - x)
288 *q2*CLHEP::twopi_mc2_rcl2*eDensity; 279 *q2*CLHEP::twopi_mc2_rcl2*eDensity;
289 } 280 }
290 res *= length; 281 res *= length;
291 } else { 282 } else {
292 // simplified correction 283 // simplified correction
293 res = eloss*q2/chargeSquare; << 284 res = eloss*q2/q20;
294 } 285 }
295 } else { 286 } else {
296 // Lindhard-Sorensen model 287 // Lindhard-Sorensen model
297 const G4double gam = tau + 1.0; 288 const G4double gam = tau + 1.0;
298 const G4double beta2 = tau * (tau+2.0)/(ga 289 const G4double beta2 = tau * (tau+2.0)/(gam*gam);
299 G4double deltaL0 = 2.0*corr->BarkasCorrect 290 G4double deltaL0 = 2.0*corr->BarkasCorrection(p, mat, e)*(charge-1.)/charge;
300 G4double deltaL = lsdata->GetDeltaL(Zin, g 291 G4double deltaL = lsdata->GetDeltaL(Zin, gam);
301 292
302 res = eloss + 293 res = eloss +
303 CLHEP::twopi_mc2_rcl2*q2*eDensity*(delta 294 CLHEP::twopi_mc2_rcl2*q2*eDensity*(deltaL+deltaL0)*length/beta2;
304 /* << 295 /*
305 G4cout << " E(GeV)=" << preKinEnergy/GeV << 296 G4cout << "G4LindhardSorensenIonModel::CorrectionsAlongStep: E(GeV)= "
306 << " L= " << eloss*beta2/(twopi_mc2_rcl2* << 297 << preKinEnergy/GeV << " eloss(MeV)= " << eloss
307 << " dL0= " << deltaL0 << 298 << " L= " << eloss*beta2/(twopi_mc2_rcl2*chargeSquare*eDensity*length)
308 << " dL= " << deltaL << " dE(MeV)=" << re << 299 << " dL0= " << deltaL0
309 */ << 300 << " dL= " << deltaL << G4endl;
>> 301 */
310 } 302 }
311 if(res > preKinEnergy || 2*res < eloss) { re << 303 if(res > preKinEnergy) { res = preKinEnergy; }
>> 304 else if(res < 0.0) { res = eloss; }
312 /* 305 /*
313 G4cout << " G4LindhardSorensenIonModel::Cor << 306 G4cout << "G4LindhardSorensenIonModel::CorrectionsAlongStep: E(GeV)="
314 << preKinEnergy/GeV << " eloss(MeV)=" 307 << preKinEnergy/GeV << " eloss(MeV)=" << eloss
315 << " res(MeV)=" << res << G4endl; 308 << " res(MeV)=" << res << G4endl;
316 */ 309 */
317 eloss = res; 310 eloss = res;
318 } 311 }
319 312
320 //....oooOO0OOooo........oooOO0OOooo........oo 313 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
321 314
322 void G4LindhardSorensenIonModel::SampleSeconda 315 void G4LindhardSorensenIonModel::SampleSecondaries(
323 std::vector<G4DynamicParticle*>* v 316 std::vector<G4DynamicParticle*>* vdp,
324 cons 317 const G4MaterialCutsCouple* couple,
325 cons 318 const G4DynamicParticle* dp,
326 G4do 319 G4double cut,
327 G4do 320 G4double maxEnergy)
328 { 321 {
329 G4double kineticEnergy = dp->GetKineticEnerg 322 G4double kineticEnergy = dp->GetKineticEnergy();
330 // take into account formfactor 323 // take into account formfactor
331 const G4double tmax = MaxSecondaryEnergy(dp- << 324 G4double tmax = MaxSecondaryEnergy(dp->GetDefinition(),kineticEnergy);
332 const G4double minKinEnergy = std::min(cut, << 325 G4double minKinEnergy = std::min(cut, tmax);
333 const G4double maxKinEnergy = std::min(maxEn << 326 G4double maxKinEnergy = std::min(maxEnergy,tmax);
334 if(minKinEnergy >= maxKinEnergy) { return; } 327 if(minKinEnergy >= maxKinEnergy) { return; }
335 328
336 //G4cout << "G4LindhardSorensenIonModel::Sam 329 //G4cout << "G4LindhardSorensenIonModel::SampleSecondaries Emin= "
337 // << minKinEnergy << " Emax= " << maxKinEne 330 // << minKinEnergy << " Emax= " << maxKinEnergy << G4endl;
338 331
339 G4double totEnergy = kineticEnergy + mass; << 332 G4double totEnergy = kineticEnergy + mass;
340 G4double etot2 = totEnergy*totEnergy; << 333 G4double etot2 = totEnergy*totEnergy;
341 G4double beta2 = kineticEnergy*(kineticEnerg << 334 G4double beta2 = kineticEnergy*(kineticEnergy + 2.0*mass)/etot2;
342 335
343 G4double deltaKinEnergy, f; 336 G4double deltaKinEnergy, f;
344 G4double f1 = 0.0; 337 G4double f1 = 0.0;
345 G4double fmax = 1.0; 338 G4double fmax = 1.0;
346 if( 0.0 < spin ) { fmax += 0.5*maxKinEnergy* 339 if( 0.0 < spin ) { fmax += 0.5*maxKinEnergy*maxKinEnergy/etot2; }
347 340
348 CLHEP::HepRandomEngine* rndmEngineMod = G4Ra 341 CLHEP::HepRandomEngine* rndmEngineMod = G4Random::getTheEngine();
349 G4double rndm[2]; 342 G4double rndm[2];
350 343
351 // sampling without nuclear size effect 344 // sampling without nuclear size effect
352 do { 345 do {
353 rndmEngineMod->flatArray(2, rndm); 346 rndmEngineMod->flatArray(2, rndm);
354 deltaKinEnergy = minKinEnergy*maxKinEnergy 347 deltaKinEnergy = minKinEnergy*maxKinEnergy
355 /(minKinEnergy*(1.0 - rndm 348 /(minKinEnergy*(1.0 - rndm[0]) + maxKinEnergy*rndm[0]);
356 349
357 f = 1.0 - beta2*deltaKinEnergy/tmax; 350 f = 1.0 - beta2*deltaKinEnergy/tmax;
358 if( 0.0 < spin ) { 351 if( 0.0 < spin ) {
359 f1 = 0.5*deltaKinEnergy*deltaKinEnergy/e 352 f1 = 0.5*deltaKinEnergy*deltaKinEnergy/etot2;
360 f += f1; 353 f += f1;
361 } 354 }
362 355
363 // Loop checking, 03-Aug-2015, Vladimir Iv 356 // Loop checking, 03-Aug-2015, Vladimir Ivanchenko
364 } while( fmax*rndm[1] > f); 357 } while( fmax*rndm[1] > f);
365 358
366 // projectile formfactor - suppresion of hig 359 // projectile formfactor - suppresion of high energy
367 // delta-electron production at high energy 360 // delta-electron production at high energy
368 361
369 G4double x = formfact*deltaKinEnergy; 362 G4double x = formfact*deltaKinEnergy;
370 if(x > 1.e-6) { 363 if(x > 1.e-6) {
371 364
372 G4double x1 = 1.0 + x; 365 G4double x1 = 1.0 + x;
373 G4double grej = 1.0/(x1*x1); 366 G4double grej = 1.0/(x1*x1);
374 if( 0.0 < spin ) { 367 if( 0.0 < spin ) {
375 G4double x2 = 0.5*electron_mass_c2*delta 368 G4double x2 = 0.5*electron_mass_c2*deltaKinEnergy/(mass*mass);
376 grej *= (1.0 + magMoment2*(x2 - f1/f)/(1 369 grej *= (1.0 + magMoment2*(x2 - f1/f)/(1.0 + x2));
377 } 370 }
378 if(grej > 1.1) { 371 if(grej > 1.1) {
379 G4cout << "### G4LindhardSorensenIonMode 372 G4cout << "### G4LindhardSorensenIonModel WARNING: grej= " << grej
380 << " " << dp->GetDefinition()->G 373 << " " << dp->GetDefinition()->GetParticleName()
381 << " Ekin(MeV)= " << kineticEner 374 << " Ekin(MeV)= " << kineticEnergy
382 << " delEkin(MeV)= " << deltaKinE 375 << " delEkin(MeV)= " << deltaKinEnergy
383 << G4endl; 376 << G4endl;
384 } 377 }
385 if(rndmEngineMod->flat() > grej) { return; 378 if(rndmEngineMod->flat() > grej) { return; }
386 } 379 }
387 380
388 G4ThreeVector deltaDirection; 381 G4ThreeVector deltaDirection;
389 382
390 if(UseAngularGeneratorFlag()) { 383 if(UseAngularGeneratorFlag()) {
391 384
392 const G4Material* mat = couple->GetMateri 385 const G4Material* mat = couple->GetMaterial();
393 G4int Z = SelectRandomAtomNumber(mat); 386 G4int Z = SelectRandomAtomNumber(mat);
394 387
395 deltaDirection = 388 deltaDirection =
396 GetAngularDistribution()->SampleDirectio 389 GetAngularDistribution()->SampleDirection(dp, deltaKinEnergy, Z, mat);
397 390
398 } else { 391 } else {
399 392
400 G4double deltaMomentum = 393 G4double deltaMomentum =
401 std::sqrt(deltaKinEnergy * (deltaKinEner 394 std::sqrt(deltaKinEnergy * (deltaKinEnergy + 2.0*electron_mass_c2));
402 G4double cost = deltaKinEnergy * (totEnerg 395 G4double cost = deltaKinEnergy * (totEnergy + electron_mass_c2) /
403 (deltaMomentum * dp->GetTotalMomentum()) 396 (deltaMomentum * dp->GetTotalMomentum());
404 cost = std::min(cost, 1.0); 397 cost = std::min(cost, 1.0);
405 G4double sint = std::sqrt((1.0 - cost)*(1. 398 G4double sint = std::sqrt((1.0 - cost)*(1.0 + cost));
406 399
407 G4double phi = CLHEP::twopi*rndmEngineMod- 400 G4double phi = CLHEP::twopi*rndmEngineMod->flat();
408 401
409 deltaDirection.set(sint*std::cos(phi),sint 402 deltaDirection.set(sint*std::cos(phi),sint*std::sin(phi), cost) ;
410 deltaDirection.rotateUz(dp->GetMomentumDir 403 deltaDirection.rotateUz(dp->GetMomentumDirection());
411 } 404 }
412 /* 405 /*
413 G4cout << "### G4LindhardSorensenIonModel 406 G4cout << "### G4LindhardSorensenIonModel "
414 << dp->GetDefinition()->GetParticle 407 << dp->GetDefinition()->GetParticleName()
415 << " Ekin(MeV)= " << kineticEnergy 408 << " Ekin(MeV)= " << kineticEnergy
416 << " delEkin(MeV)= " << deltaKinEne 409 << " delEkin(MeV)= " << deltaKinEnergy
417 << " tmin(MeV)= " << minKinEnergy 410 << " tmin(MeV)= " << minKinEnergy
418 << " tmax(MeV)= " << maxKinEnergy 411 << " tmax(MeV)= " << maxKinEnergy
419 << " dir= " << dp->GetMomentumDirec 412 << " dir= " << dp->GetMomentumDirection()
420 << " dirDelta= " << deltaDirection 413 << " dirDelta= " << deltaDirection
421 << G4endl; 414 << G4endl;
422 */ 415 */
423 // create G4DynamicParticle object for delta 416 // create G4DynamicParticle object for delta ray
424 auto delta = new G4DynamicParticle(theElectr 417 auto delta = new G4DynamicParticle(theElectron,deltaDirection,deltaKinEnergy);
425 418
426 vdp->push_back(delta); 419 vdp->push_back(delta);
427 420
428 // Change kinematics of primary particle 421 // Change kinematics of primary particle
429 kineticEnergy -= deltaKinEnergy; 422 kineticEnergy -= deltaKinEnergy;
430 G4ThreeVector finalP = dp->GetMomentum() - d 423 G4ThreeVector finalP = dp->GetMomentum() - delta->GetMomentum();
431 finalP = finalP.unit(); << 424 finalP = finalP.unit();
432 425
433 fParticleChange->SetProposedKineticEnergy(ki 426 fParticleChange->SetProposedKineticEnergy(kineticEnergy);
434 fParticleChange->SetProposedMomentumDirectio 427 fParticleChange->SetProposedMomentumDirection(finalP);
435 } 428 }
436 429
437 //....oooOO0OOooo........oooOO0OOooo........oo 430 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
438 431
439 G4double 432 G4double
440 G4LindhardSorensenIonModel::MaxSecondaryEnergy 433 G4LindhardSorensenIonModel::MaxSecondaryEnergy(const G4ParticleDefinition* pd,
441 434 G4double kinEnergy)
442 { 435 {
443 // here particle type is checked for any met 436 // here particle type is checked for any method
444 SetParticle(pd); 437 SetParticle(pd);
445 G4double tau = kinEnergy/mass; 438 G4double tau = kinEnergy/mass;
446 return 2.0*CLHEP::electron_mass_c2*tau*(tau 439 return 2.0*CLHEP::electron_mass_c2*tau*(tau + 2.) /
447 (1. + 2.0*(tau + 1.)*eRatio + eRatio*eRati 440 (1. + 2.0*(tau + 1.)*eRatio + eRatio*eRatio);
448 } 441 }
449 442
450 //....oooOO0OOooo........oooOO0OOooo........oo 443 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
451 444