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25 // 25 //
>> 26 // $Id$
26 // 27 //
27 // ------------------------------------------- 28 // -------------------------------------------------------------------
28 // 29 //
29 // GEANT4 Class file 30 // GEANT4 Class file
30 // 31 //
31 // 32 //
32 // File name: G4BetheHeitlerModel 33 // File name: G4BetheHeitlerModel
33 // 34 //
34 // Author: Vladimir Ivanchenko on base 35 // Author: Vladimir Ivanchenko on base of Michel Maire code
35 // 36 //
36 // Creation date: 15.03.2005 37 // Creation date: 15.03.2005
37 // 38 //
38 // Modifications by Vladimir Ivanchenko, Miche << 39 // Modifications:
>> 40 // 18-04-05 Use G4ParticleChangeForGamma (V.Ivantchenko)
>> 41 // 24-06-05 Increase number of bins to 200 (V.Ivantchenko)
>> 42 // 16-11-05 replace shootBit() by G4UniformRand() mma
>> 43 // 04-12-05 SetProposedKineticEnergy(0.) for the killed photon (mma)
>> 44 // 20-02-07 SelectRandomElement is called for any initial gamma energy
>> 45 // in order to have selected element for polarized model (VI)
>> 46 // 25-10-10 Removed unused table, added element selector (VI)
39 // 47 //
40 // Class Description: 48 // Class Description:
41 // 49 //
42 // ------------------------------------------- 50 // -------------------------------------------------------------------
43 // 51 //
>> 52 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 53 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
44 54
45 #include "G4BetheHeitlerModel.hh" 55 #include "G4BetheHeitlerModel.hh"
46 #include "G4PhysicalConstants.hh" 56 #include "G4PhysicalConstants.hh"
47 #include "G4SystemOfUnits.hh" 57 #include "G4SystemOfUnits.hh"
48 #include "G4Electron.hh" 58 #include "G4Electron.hh"
49 #include "G4Positron.hh" 59 #include "G4Positron.hh"
50 #include "G4Gamma.hh" 60 #include "G4Gamma.hh"
51 #include "Randomize.hh" 61 #include "Randomize.hh"
52 #include "G4ParticleChangeForGamma.hh" 62 #include "G4ParticleChangeForGamma.hh"
53 #include "G4Pow.hh" <<
54 #include "G4Exp.hh" <<
55 #include "G4ModifiedTsai.hh" <<
56 #include "G4EmParameters.hh" <<
57 #include "G4EmElementXS.hh" <<
58 #include "G4AutoLock.hh" <<
59 63
60 const G4int G4BetheHeitlerModel::gMaxZet = 120 << 64 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
61 std::vector<G4BetheHeitlerModel::ElementData*> <<
62 65
63 namespace << 66 using namespace std;
64 { <<
65 G4Mutex theBetheHMutex = G4MUTEX_INITIALIZER <<
66 } <<
67 67
68 G4BetheHeitlerModel::G4BetheHeitlerModel(const << 68 G4BetheHeitlerModel::G4BetheHeitlerModel(const G4ParticleDefinition*,
69 const << 69 const G4String& nam)
70 : G4VEmModel(nam), << 70 : G4VEmModel(nam)
71 fG4Calc(G4Pow::GetInstance()), fTheGamma(G4G <<
72 fTheElectron(G4Electron::Electron()), fThePo <<
73 fParticleChange(nullptr) <<
74 { 71 {
75 SetAngularDistribution(new G4ModifiedTsai()) << 72 fParticleChange = 0;
>> 73 theGamma = G4Gamma::Gamma();
>> 74 thePositron = G4Positron::Positron();
>> 75 theElectron = G4Electron::Electron();
76 } 76 }
77 77
>> 78 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 79
78 G4BetheHeitlerModel::~G4BetheHeitlerModel() 80 G4BetheHeitlerModel::~G4BetheHeitlerModel()
79 { << 81 {}
80 if (isFirstInstance) { <<
81 for (auto const & ptr : gElementData) { de <<
82 gElementData.clear(); <<
83 } <<
84 delete fXSection; <<
85 } <<
86 82
87 void G4BetheHeitlerModel::Initialise(const G4P << 83 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
88 const G4D <<
89 { <<
90 if (!fParticleChange) { fParticleChange = Ge <<
91 84
92 if (isFirstInstance || gElementData.empty()) << 85 void G4BetheHeitlerModel::Initialise(const G4ParticleDefinition* p,
93 G4AutoLock l(&theBetheHMutex); << 86 const G4DataVector& cuts)
94 if (gElementData.empty()) { <<
95 isFirstInstance = true; <<
96 gElementData.resize(gMaxZet+1, nullptr); <<
97 <<
98 // EPICS2017 flag should be checked only <<
99 useEPICS2017 = G4EmParameters::Instance( <<
100 if (useEPICS2017) { <<
101 fXSection = new G4EmElementXS(1, 100, "convE <<
102 } <<
103 } <<
104 // static data should be initialised only <<
105 InitialiseElementData(); <<
106 l.unlock(); <<
107 } <<
108 // element selectors should be initialised i <<
109 if(IsMaster()) { <<
110 InitialiseElementSelectors(p, cuts); <<
111 } <<
112 } <<
113 <<
114 void G4BetheHeitlerModel::InitialiseLocal(cons <<
115 G4VE <<
116 { 87 {
117 SetElementSelectors(masterModel->GetElementS << 88 if(!fParticleChange) { fParticleChange = GetParticleChangeForGamma(); }
>> 89 InitialiseElementSelectors(p, cuts);
118 } 90 }
119 91
>> 92 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 93
>> 94 G4double
>> 95 G4BetheHeitlerModel::ComputeCrossSectionPerAtom(const G4ParticleDefinition*,
>> 96 G4double GammaEnergy, G4double Z,
>> 97 G4double, G4double, G4double)
120 // Calculates the microscopic cross section in 98 // Calculates the microscopic cross section in GEANT4 internal units.
121 // A parametrized formula from L. Urban is use 99 // A parametrized formula from L. Urban is used to estimate
122 // the total cross section. 100 // the total cross section.
123 // It gives a good description of the data fro 101 // It gives a good description of the data from 1.5 MeV to 100 GeV.
124 // below 1.5 MeV: sigma=sigma(1.5MeV)*(GammaEn 102 // below 1.5 MeV: sigma=sigma(1.5MeV)*(GammaEnergy-2electronmass)
125 // *(GammaEn 103 // *(GammaEnergy-2electronmass)
126 G4double <<
127 G4BetheHeitlerModel::ComputeCrossSectionPerAto <<
128 <<
129 <<
130 { 104 {
>> 105 static const G4double GammaEnergyLimit = 1.5*MeV;
131 G4double xSection = 0.0 ; 106 G4double xSection = 0.0 ;
132 // short versions << 107 if ( Z < 0.9 || GammaEnergy <= 2.0*electron_mass_c2 ) { return xSection; }
133 static const G4double kMC2 = CLHEP::electro << 108
134 // zero cross section below the kinematical << 109 static const G4double
135 if (Z < 0.9 || gammaEnergy <= 2.0*kMC2) { re << 110 a0= 8.7842e+2*microbarn, a1=-1.9625e+3*microbarn, a2= 1.2949e+3*microbarn,
136 << 111 a3=-2.0028e+2*microbarn, a4= 1.2575e+1*microbarn, a5=-2.8333e-1*microbarn;
137 G4int iZ = G4lrint(Z); << 112
138 if (useEPICS2017 && iZ < 101) { << 113 static const G4double
139 return fXSection->GetXS(iZ, gammaEnergy); << 114 b0=-1.0342e+1*microbarn, b1= 1.7692e+1*microbarn, b2=-8.2381 *microbarn,
140 } << 115 b3= 1.3063 *microbarn, b4=-9.0815e-2*microbarn, b5= 2.3586e-3*microbarn;
>> 116
>> 117 static const G4double
>> 118 c0=-4.5263e+2*microbarn, c1= 1.1161e+3*microbarn, c2=-8.6749e+2*microbarn,
>> 119 c3= 2.1773e+2*microbarn, c4=-2.0467e+1*microbarn, c5= 6.5372e-1*microbarn;
>> 120
>> 121 G4double GammaEnergySave = GammaEnergy;
>> 122 if (GammaEnergy < GammaEnergyLimit) { GammaEnergy = GammaEnergyLimit; }
>> 123
>> 124 G4double X=log(GammaEnergy/electron_mass_c2), X2=X*X, X3=X2*X, X4=X3*X, X5=X4*X;
>> 125
>> 126 G4double F1 = a0 + a1*X + a2*X2 + a3*X3 + a4*X4 + a5*X5,
>> 127 F2 = b0 + b1*X + b2*X2 + b3*X3 + b4*X4 + b5*X5,
>> 128 F3 = c0 + c1*X + c2*X2 + c3*X3 + c4*X4 + c5*X5;
141 129
142 // <<
143 static const G4double gammaEnergyLimit = 1.5 <<
144 // set coefficients a, b c <<
145 static const G4double a0 = 8.7842e+2*CLHEP: <<
146 static const G4double a1 = -1.9625e+3*CLHEP: <<
147 static const G4double a2 = 1.2949e+3*CLHEP: <<
148 static const G4double a3 = -2.0028e+2*CLHEP: <<
149 static const G4double a4 = 1.2575e+1*CLHEP: <<
150 static const G4double a5 = -2.8333e-1*CLHEP: <<
151 <<
152 static const G4double b0 = -1.0342e+1*CLHEP: <<
153 static const G4double b1 = 1.7692e+1*CLHEP: <<
154 static const G4double b2 = -8.2381 *CLHEP: <<
155 static const G4double b3 = 1.3063 *CLHEP: <<
156 static const G4double b4 = -9.0815e-2*CLHEP: <<
157 static const G4double b5 = 2.3586e-3*CLHEP: <<
158 <<
159 static const G4double c0 = -4.5263e+2*CLHEP: <<
160 static const G4double c1 = 1.1161e+3*CLHEP: <<
161 static const G4double c2 = -8.6749e+2*CLHEP: <<
162 static const G4double c3 = 2.1773e+2*CLHEP: <<
163 static const G4double c4 = -2.0467e+1*CLHEP: <<
164 static const G4double c5 = 6.5372e-1*CLHEP: <<
165 // check low energy limit of the approximati <<
166 G4double gammaEnergyOrg = gammaEnergy; <<
167 if (gammaEnergy < gammaEnergyLimit) { gammaE <<
168 // compute gamma energy variables <<
169 const G4double x = G4Log(gammaEnergy/kMC2); <<
170 const G4double x2 = x *x; <<
171 const G4double x3 = x2*x; <<
172 const G4double x4 = x3*x; <<
173 const G4double x5 = x4*x; <<
174 // <<
175 const G4double F1 = a0 + a1*x + a2*x2 + a3*x <<
176 const G4double F2 = b0 + b1*x + b2*x2 + b3*x <<
177 const G4double F3 = c0 + c1*x + c2*x2 + c3*x <<
178 // compute the approximated cross section <<
179 xSection = (Z + 1.)*(F1*Z + F2*Z*Z + F3); 130 xSection = (Z + 1.)*(F1*Z + F2*Z*Z + F3);
180 // check if we are below the limit of the ap << 131
181 if (gammaEnergyOrg < gammaEnergyLimit) { << 132 if (GammaEnergySave < GammaEnergyLimit) {
182 const G4double dum = (gammaEnergyOrg-2.*kM << 133
183 xSection *= dum*dum; << 134 X = (GammaEnergySave - 2.*electron_mass_c2)
>> 135 / (GammaEnergyLimit - 2.*electron_mass_c2);
>> 136 xSection *= X*X;
184 } 137 }
185 // make sure that the cross section is never << 138
186 xSection = std::max(xSection, 0.); << 139 if (xSection < 0.) { xSection = 0.; }
187 return xSection; 140 return xSection;
188 } 141 }
189 142
>> 143 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
>> 144
>> 145 void G4BetheHeitlerModel::SampleSecondaries(std::vector<G4DynamicParticle*>* fvect,
>> 146 const G4MaterialCutsCouple* couple,
>> 147 const G4DynamicParticle* aDynamicGamma,
>> 148 G4double,
>> 149 G4double)
190 // The secondaries e+e- energies are sampled u 150 // The secondaries e+e- energies are sampled using the Bethe - Heitler
191 // cross sections with Coulomb correction. 151 // cross sections with Coulomb correction.
192 // A modified version of the random number tec 152 // A modified version of the random number techniques of Butcher & Messel
193 // is used (Nuc Phys 20(1960),15). 153 // is used (Nuc Phys 20(1960),15).
194 // 154 //
195 // GEANT4 internal units. 155 // GEANT4 internal units.
196 // 156 //
197 // Note 1 : Effects due to the breakdown of th 157 // Note 1 : Effects due to the breakdown of the Born approximation at
198 // low energy are ignored. 158 // low energy are ignored.
199 // Note 2 : The differential cross section imp 159 // Note 2 : The differential cross section implicitly takes account of
200 // pair creation in both nuclear and 160 // pair creation in both nuclear and atomic electron fields.
201 // However triplet prodution is not g 161 // However triplet prodution is not generated.
202 void G4BetheHeitlerModel::SampleSecondaries(st <<
203 co <<
204 co <<
205 G4 <<
206 { 162 {
207 // set some constant values << 163 const G4Material* aMaterial = couple->GetMaterial();
208 const G4double gammaEnergy = aDynamicGamm << 164
209 const G4double eps0 = CLHEP::elect << 165 G4double GammaEnergy = aDynamicGamma->GetKineticEnergy();
210 // << 166 G4ParticleMomentum GammaDirection = aDynamicGamma->GetMomentumDirection();
211 // check kinematical limit: gamma energy(Eg) << 167
212 if (eps0 > 0.5) { return; } << 168 G4double epsil ;
213 // << 169 G4double epsil0 = electron_mass_c2/GammaEnergy ;
214 // select target element of the material (pr << 170 if(epsil0 > 1.0) { return; }
215 const G4Element* anElement = SelectTargetAto << 171
216 aDyn << 172 // do it fast if GammaEnergy < 2. MeV
217 << 173 static const G4double Egsmall=2.*MeV;
218 // << 174
219 // get the random engine << 175 // select randomly one element constituing the material
220 CLHEP::HepRandomEngine* rndmEngine = G4Rando << 176 const G4Element* anElement = SelectRandomAtom(aMaterial, theGamma, GammaEnergy);
221 // << 177
222 // 'eps' is the total energy transferred to << 178 if (GammaEnergy < Egsmall) {
223 // gamma energy units Eg. Since the correspo << 179
224 // the kinematical limits for eps0=mc^2/Eg < << 180 epsil = epsil0 + (0.5-epsil0)*G4UniformRand();
225 // 1. 'eps' is sampled uniformly on the [eps << 181
226 // 2. otherwise, on the [eps_min, 0.5] inter <<
227 G4double eps; <<
228 // case 1. <<
229 static const G4double Egsmall = 2.*CLHEP::Me <<
230 if (gammaEnergy < Egsmall) { <<
231 eps = eps0 + (0.5-eps0)*rndmEngine->flat() <<
232 } else { 182 } else {
233 // case 2. << 183 // now comes the case with GammaEnergy >= 2. MeV
234 // get the Coulomb factor for the target e << 184
235 // F(Z) = 8*ln(Z)/3 if Eg <= 50 << 185 // Extract Coulomb factor for this Element
236 // F(Z) = 8*ln(Z)/3 + 8*fc(Z) if Eg > 50 << 186 G4double FZ = 8.*(anElement->GetIonisation()->GetlogZ3());
>> 187 if (GammaEnergy > 50.*MeV) { FZ += 8.*(anElement->GetfCoulomb()); }
>> 188
>> 189 // limits of the screening variable
>> 190 G4double screenfac = 136.*epsil0/(anElement->GetIonisation()->GetZ3());
>> 191 G4double screenmax = exp ((42.24 - FZ)/8.368) - 0.952 ;
>> 192 G4double screenmin = min(4.*screenfac,screenmax);
>> 193
>> 194 // limits of the energy sampling
>> 195 G4double epsil1 = 0.5 - 0.5*sqrt(1. - screenmin/screenmax) ;
>> 196 G4double epsilmin = max(epsil0,epsil1) , epsilrange = 0.5 - epsilmin;
>> 197
237 // 198 //
238 // The screening variable 'delta(eps)' = 1 << 199 // sample the energy rate of the created electron (or positron)
239 // Due to the Coulomb correction, the DCS <<
240 // kinematicaly allowed eps > eps0 values. <<
241 // range with negative DCS, the minimum ep <<
242 // max[eps0, epsp] with epsp is the soluti <<
243 // with SF being the screening function (S <<
244 // The solution is epsp = 0.5 - 0.5*sqrt[ <<
245 // with deltap = Exp[(42.038-F(Z))/8.29]-0 <<
246 // - when eps=eps_max = 0.5 => <<
247 // - epsp = 0.5 - 0.5*sqrt[ 1 - delta_min/ <<
248 // - and eps_min = max[eps0, epsp] <<
249 static const G4double midEnergy = 50.*CLHE <<
250 const G4int iZet = std::min(gMa <<
251 const G4double deltaFactor = 136.*eps0/an <<
252 G4double deltaMax = gElementData <<
253 G4double FZ = 8.*anElement <<
254 if (gammaEnergy > midEnergy) { <<
255 FZ += 8.*(anElement->GetfCoulomb()) <<
256 deltaMax = gElementData[iZet]->fDeltaMax <<
257 } <<
258 const G4double deltaMin = 4.*deltaFactor; <<
259 // <<
260 // compute the limits of eps <<
261 const G4double epsp = 0.5 - 0.5*std::s <<
262 const G4double epsMin = std::max(eps0,ep <<
263 const G4double epsRange = 0.5 - epsMin; <<
264 // 200 //
265 // sample the energy rate (eps) of the cre << 201 //G4double epsil, screenvar, greject ;
266 G4double F10, F20; << 202 G4double screenvar, greject ;
267 ScreenFunction12(deltaMin, F10, F20); << 203
268 F10 -= FZ; << 204 G4double F10 = ScreenFunction1(screenmin) - FZ;
269 F20 -= FZ; << 205 G4double F20 = ScreenFunction2(screenmin) - FZ;
270 const G4double NormF1 = std::max(F10 * e << 206 G4double NormF1 = max(F10*epsilrange*epsilrange,0.);
271 const G4double NormF2 = std::max(1.5 * F << 207 G4double NormF2 = max(1.5*F20,0.);
272 const G4double NormCond = NormF1/(NormF1 + << 208
273 // we will need 3 uniform random number fo <<
274 G4double rndmv[3]; <<
275 G4double greject = 0.; <<
276 do { 209 do {
277 rndmEngine->flatArray(3, rndmv); << 210 if ( NormF1/(NormF1+NormF2) > G4UniformRand() ) {
278 if (NormCond > rndmv[0]) { << 211 epsil = 0.5 - epsilrange*pow(G4UniformRand(), 0.333333);
279 eps = 0.5 - epsRange * fG4Calc->A13(rn << 212 screenvar = screenfac/(epsil*(1-epsil));
280 const G4double delta = deltaFactor/(ep << 213 greject = (ScreenFunction1(screenvar) - FZ)/F10;
281 greject = (ScreenFunction1(delta)-FZ)/ << 214
282 } else { 215 } else {
283 eps = epsMin + epsRange*rndmv[1]; << 216 epsil = epsilmin + epsilrange*G4UniformRand();
284 const G4double delta = deltaFactor/(ep << 217 screenvar = screenfac/(epsil*(1-epsil));
285 greject = (ScreenFunction2(delta)-FZ)/ << 218 greject = (ScreenFunction2(screenvar) - FZ)/F20;
286 } 219 }
287 // Loop checking, 03-Aug-2015, Vladimir << 220
288 } while (greject < rndmv[2]); << 221 } while( greject < G4UniformRand() );
289 } // end of eps sampling << 222
>> 223 } // end of epsil sampling
>> 224
>> 225 //
>> 226 // fixe charges randomly
290 // 227 //
291 // select charges randomly << 228
292 G4double eTotEnergy, pTotEnergy; << 229 G4double ElectTotEnergy, PositTotEnergy;
293 if (rndmEngine->flat() > 0.5) { << 230 if (G4UniformRand() > 0.5) {
294 eTotEnergy = (1.-eps)*gammaEnergy; << 231
295 pTotEnergy = eps*gammaEnergy; << 232 ElectTotEnergy = (1.-epsil)*GammaEnergy;
>> 233 PositTotEnergy = epsil*GammaEnergy;
>> 234
296 } else { 235 } else {
297 pTotEnergy = (1.-eps)*gammaEnergy; << 236
298 eTotEnergy = eps*gammaEnergy; << 237 PositTotEnergy = (1.-epsil)*GammaEnergy;
>> 238 ElectTotEnergy = epsil*GammaEnergy;
299 } 239 }
>> 240
>> 241 //
>> 242 // scattered electron (positron) angles. ( Z - axis along the parent photon)
300 // 243 //
301 // sample pair kinematics << 244 // universal distribution suggested by L. Urban
302 const G4double eKinEnergy = std::max(0.,eTot << 245 // (Geant3 manual (1993) Phys211),
303 const G4double pKinEnergy = std::max(0.,pTot << 246 // derived from Tsai distribution (Rev Mod Phys 49,421(1977))
>> 247
>> 248 G4double u;
>> 249 const G4double a1 = 0.625 , a2 = 3.*a1 , d = 27. ;
>> 250
>> 251 if (9./(9.+d) >G4UniformRand()) u= - log(G4UniformRand()*G4UniformRand())/a1;
>> 252 else u= - log(G4UniformRand()*G4UniformRand())/a2;
>> 253
>> 254 G4double TetEl = u*electron_mass_c2/ElectTotEnergy;
>> 255 G4double TetPo = u*electron_mass_c2/PositTotEnergy;
>> 256 G4double Phi = twopi * G4UniformRand();
>> 257 G4double dxEl= sin(TetEl)*cos(Phi),dyEl= sin(TetEl)*sin(Phi),dzEl=cos(TetEl);
>> 258 G4double dxPo=-sin(TetPo)*cos(Phi),dyPo=-sin(TetPo)*sin(Phi),dzPo=cos(TetPo);
>> 259
304 // 260 //
305 G4ThreeVector eDirection, pDirection; << 261 // kinematic of the created pair
306 // 262 //
307 GetAngularDistribution()->SamplePairDirectio << 263 // the electron and positron are assumed to have a symetric
308 << 264 // angular distribution with respect to the Z axis along the parent photon.
309 << 265
310 // create G4DynamicParticle object for the p << 266 G4double ElectKineEnergy = max(0.,ElectTotEnergy - electron_mass_c2);
311 auto aParticle1= new G4DynamicParticle(fTheE << 267
312 // create G4DynamicParticle object for the p << 268 G4ThreeVector ElectDirection (dxEl, dyEl, dzEl);
313 auto aParticle2= new G4DynamicParticle(fTheP << 269 ElectDirection.rotateUz(GammaDirection);
>> 270
>> 271 // create G4DynamicParticle object for the particle1
>> 272 G4DynamicParticle* aParticle1= new G4DynamicParticle(
>> 273 theElectron,ElectDirection,ElectKineEnergy);
>> 274
>> 275 // the e+ is always created (even with Ekine=0) for further annihilation.
>> 276
>> 277 G4double PositKineEnergy = max(0.,PositTotEnergy - electron_mass_c2);
>> 278
>> 279 G4ThreeVector PositDirection (dxPo, dyPo, dzPo);
>> 280 PositDirection.rotateUz(GammaDirection);
>> 281
>> 282 // create G4DynamicParticle object for the particle2
>> 283 G4DynamicParticle* aParticle2= new G4DynamicParticle(
>> 284 thePositron,PositDirection,PositKineEnergy);
>> 285
314 // Fill output vector 286 // Fill output vector
315 fvect->push_back(aParticle1); 287 fvect->push_back(aParticle1);
316 fvect->push_back(aParticle2); 288 fvect->push_back(aParticle2);
>> 289
317 // kill incident photon 290 // kill incident photon
318 fParticleChange->SetProposedKineticEnergy(0. 291 fParticleChange->SetProposedKineticEnergy(0.);
319 fParticleChange->ProposeTrackStatus(fStopAnd 292 fParticleChange->ProposeTrackStatus(fStopAndKill);
320 } 293 }
321 294
322 // should be called only by the master and at << 295 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
323 void G4BetheHeitlerModel::InitialiseElementDat <<
324 { <<
325 // create for all elements that are in the d <<
326 auto elemTable = G4Element::GetElementTable( <<
327 for (auto const & elem : *elemTable) { <<
328 const G4int Z = elem->GetZasInt(); <<
329 const G4int iz = std::min(gMaxZet, Z); <<
330 if (nullptr == gElementData[iz]) { // crea <<
331 G4double FZLow = 8.*elem->GetIonisat <<
332 G4double FZHigh = FZLow + 8.*elem->Ge <<
333 auto elD = new ElementData(); <<
334 elD->fDeltaMaxLow = G4Exp((42.038 - FZL <<
335 elD->fDeltaMaxHigh = G4Exp((42.038 - FZH <<
336 gElementData[iz] = elD; <<
337 } <<
338 if (useEPICS2017 && Z < 101) { <<
339 fXSection->Retrieve(Z); <<
340 } <<
341 } <<
342 <<
343 } <<
344 <<
345 296