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35 // 35 //
36 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 36 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
37 // 37 //
38 // MODULE: G4WilsonAblationModel. 38 // MODULE: G4WilsonAblationModel.cc
39 // 39 //
40 // Version: 1.0 << 40 // Version: B.1
41 // Date: 08/12/2009 << 41 // Date: 15/04/04
42 // Author: P R Truscott 42 // Author: P R Truscott
43 // Organisation: QinetiQ Ltd, UK 43 // Organisation: QinetiQ Ltd, UK
44 // Customer: ESA/ESTEC, NOORDWIJK 44 // Customer: ESA/ESTEC, NOORDWIJK
45 // Contract: 17191/03/NL/LvH 45 // Contract: 17191/03/NL/LvH
46 // 46 //
47 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 47 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
48 // 48 //
49 // CHANGE HISTORY 49 // CHANGE HISTORY
50 // -------------- 50 // --------------
51 // 51 //
52 // 6 October 2003, P R Truscott, QinetiQ Ltd, 52 // 6 October 2003, P R Truscott, QinetiQ Ltd, UK
53 // Created. 53 // Created.
54 // 54 //
55 // 15 March 2004, P R Truscott, QinetiQ Ltd, U 55 // 15 March 2004, P R Truscott, QinetiQ Ltd, UK
56 // Beta release 56 // Beta release
57 // 57 //
58 // 08 December 2009, P R Truscott, QinetiQ Ltd <<
59 // Ver 1.0 <<
60 // Updated as a result of changes in the G4Eva <<
61 // affect mostly SelectSecondariesByEvaporatio <<
62 // associated with the evaporation model which <<
63 // OPTxs to select the inverse cross-sectio <<
64 // OPTxs = 0 => Dostrovski's parameter <<
65 // OPTxs = 1 or 2 => Chatterjee's paramater <<
66 // OPTxs = 3 or 4 => Kalbach's parameteriza <<
67 // useSICB => use superimposed Coulo <<
68 // sections <<
69 // Other problem found with G4Fragment definit <<
70 // **G4ParticleDefinition**. This does not al <<
71 // fragment for some reason. Now the fragment <<
72 // G4Fragment *fragment = new G4Fragment(A, <<
73 // to avoid this quirk. Bug found in SelectSe <<
74 // equated to evapType[i] whereas previously i <<
75 // <<
76 // 06 August 2015, A. Ribon, CERN <<
77 // Migrated std::exp and std::pow to the faste <<
78 // <<
79 // 09 June 2017, C. Mancini Terracciano, INFN <<
80 // Fixed bug on the initialization of Photon E <<
81 // <<
82 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 58 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
83 ////////////////////////////////////////////// 59 ////////////////////////////////////////////////////////////////////////////////
84 // 60 //
85 #include <iomanip> <<
86 #include <numeric> <<
87 <<
88 #include "G4WilsonAblationModel.hh" 61 #include "G4WilsonAblationModel.hh"
89 #include "G4PhysicalConstants.hh" <<
90 #include "G4SystemOfUnits.hh" <<
91 #include "Randomize.hh" 62 #include "Randomize.hh"
92 #include "G4ParticleTable.hh" 63 #include "G4ParticleTable.hh"
93 #include "G4IonTable.hh" 64 #include "G4IonTable.hh"
94 #include "G4Alpha.hh" 65 #include "G4Alpha.hh"
95 #include "G4He3.hh" 66 #include "G4He3.hh"
96 #include "G4Triton.hh" 67 #include "G4Triton.hh"
97 #include "G4Deuteron.hh" 68 #include "G4Deuteron.hh"
98 #include "G4Proton.hh" 69 #include "G4Proton.hh"
99 #include "G4Neutron.hh" 70 #include "G4Neutron.hh"
100 #include "G4AlphaEvaporationChannel.hh" 71 #include "G4AlphaEvaporationChannel.hh"
101 #include "G4He3EvaporationChannel.hh" 72 #include "G4He3EvaporationChannel.hh"
102 #include "G4TritonEvaporationChannel.hh" 73 #include "G4TritonEvaporationChannel.hh"
103 #include "G4DeuteronEvaporationChannel.hh" 74 #include "G4DeuteronEvaporationChannel.hh"
104 #include "G4ProtonEvaporationChannel.hh" 75 #include "G4ProtonEvaporationChannel.hh"
105 #include "G4NeutronEvaporationChannel.hh" 76 #include "G4NeutronEvaporationChannel.hh"
106 #include "G4PhotonEvaporation.hh" <<
107 #include "G4LorentzVector.hh" 77 #include "G4LorentzVector.hh"
108 #include "G4VEvaporationChannel.hh" 78 #include "G4VEvaporationChannel.hh"
109 79
110 #include "G4Exp.hh" << 80 #include <iomanip>
111 #include "G4Pow.hh" << 81 #include <numeric>
112 <<
113 #include "G4PhysicsModelCatalog.hh" <<
114 <<
115 ////////////////////////////////////////////// 82 ////////////////////////////////////////////////////////////////////////////////
116 // 83 //
117 G4WilsonAblationModel::G4WilsonAblationModel() 84 G4WilsonAblationModel::G4WilsonAblationModel()
118 { 85 {
119 // 86 //
120 // 87 //
121 // Send message to stdout to advise that the G 88 // Send message to stdout to advise that the G4Abrasion model is being used.
122 // 89 //
123 PrintWelcomeMessage(); 90 PrintWelcomeMessage();
124 // 91 //
125 // 92 //
126 // Set the default verbose level to 0 - no out 93 // Set the default verbose level to 0 - no output.
127 // 94 //
128 verboseLevel = 0; 95 verboseLevel = 0;
129 // 96 //
130 // 97 //
131 // Set the binding energy per nucleon .... did 98 // Set the binding energy per nucleon .... did I mention that this is a crude
132 // model for nuclear de-excitation? 99 // model for nuclear de-excitation?
133 // 100 //
134 B = 10.0 * MeV; 101 B = 10.0 * MeV;
135 // 102 //
136 // 103 //
137 // It is possuble to switch off secondary part 104 // It is possuble to switch off secondary particle production (other than the
138 // final nuclear fragment). The default is on 105 // final nuclear fragment). The default is on.
139 // 106 //
140 produceSecondaries = true; 107 produceSecondaries = true;
141 // 108 //
142 // 109 //
143 // Now we need to define the decay modes. We' 110 // Now we need to define the decay modes. We're using the G4Evaporation model
144 // to help determine the kinematics of the dec 111 // to help determine the kinematics of the decay.
145 // 112 //
146 nFragTypes = 6; 113 nFragTypes = 6;
147 fragType[0] = G4Alpha::Alpha(); 114 fragType[0] = G4Alpha::Alpha();
148 fragType[1] = G4He3::He3(); 115 fragType[1] = G4He3::He3();
149 fragType[2] = G4Triton::Triton(); 116 fragType[2] = G4Triton::Triton();
150 fragType[3] = G4Deuteron::Deuteron(); 117 fragType[3] = G4Deuteron::Deuteron();
151 fragType[4] = G4Proton::Proton(); 118 fragType[4] = G4Proton::Proton();
152 fragType[5] = G4Neutron::Neutron(); 119 fragType[5] = G4Neutron::Neutron();
153 for(G4int i=0; i<200; ++i) { fSig[i] = 0.0; <<
154 // 120 //
155 // 121 //
156 // Set verboseLevel default to no output. 122 // Set verboseLevel default to no output.
157 // 123 //
158 verboseLevel = 0; 124 verboseLevel = 0;
159 theChannelFactory = new G4EvaporationFactory <<
160 theChannels = theChannelFactory->GetChannel( <<
161 // <<
162 // <<
163 // Set defaults for evaporation classes. Thes <<
164 // "set" methods. <<
165 // <<
166 OPTxs = 3; <<
167 useSICB = false; <<
168 fragmentVector = 0; <<
169 <<
170 secID = G4PhysicsModelCatalog::GetModelID("m <<
171 } 125 }
172 ////////////////////////////////////////////// 126 ////////////////////////////////////////////////////////////////////////////////
173 // 127 //
174 G4WilsonAblationModel::~G4WilsonAblationModel( 128 G4WilsonAblationModel::~G4WilsonAblationModel()
175 {} << 129 {;}
176 <<
177 ////////////////////////////////////////////// 130 ////////////////////////////////////////////////////////////////////////////////
178 // 131 //
179 G4FragmentVector *G4WilsonAblationModel::Break 132 G4FragmentVector *G4WilsonAblationModel::BreakItUp
180 (const G4Fragment &theNucleus) 133 (const G4Fragment &theNucleus)
181 { 134 {
182 // 135 //
183 // 136 //
184 // Initilise the pointer to the G4FragmentVect 137 // Initilise the pointer to the G4FragmentVector used to return the information
185 // about the breakup. 138 // about the breakup.
186 // 139 //
187 fragmentVector = new G4FragmentVector; 140 fragmentVector = new G4FragmentVector;
188 fragmentVector->clear(); 141 fragmentVector->clear();
189 // 142 //
190 // 143 //
191 // Get the A, Z and excitation of the nucleus. 144 // Get the A, Z and excitation of the nucleus.
192 // 145 //
193 G4int A = theNucleus.GetA_asInt(); << 146 G4int A = (G4int) theNucleus.GetA();
194 G4int Z = theNucleus.GetZ_asInt(); << 147 G4int Z = (G4int) theNucleus.GetZ();
195 G4double ex = theNucleus.GetExcitationEnergy 148 G4double ex = theNucleus.GetExcitationEnergy();
196 if (verboseLevel >= 2) 149 if (verboseLevel >= 2)
197 { 150 {
198 G4cout <<"oooooooooooooooooooooooooooooooo 151 G4cout <<"oooooooooooooooooooooooooooooooooooooooo"
199 <<"oooooooooooooooooooooooooooooooo 152 <<"oooooooooooooooooooooooooooooooooooooooo"
200 <<G4endl; 153 <<G4endl;
201 G4cout.precision(6); 154 G4cout.precision(6);
202 G4cout <<"IN G4WilsonAblationModel" <<G4en 155 G4cout <<"IN G4WilsonAblationModel" <<G4endl;
203 G4cout <<"Initial prefragment A=" <<A 156 G4cout <<"Initial prefragment A=" <<A
204 <<", Z=" <<Z 157 <<", Z=" <<Z
205 <<", excitation energy = " <<ex/MeV 158 <<", excitation energy = " <<ex/MeV <<" MeV"
206 <<G4endl; 159 <<G4endl;
207 } 160 }
208 // 161 //
209 // 162 //
210 // Check that there is a nucleus to speak of. 163 // Check that there is a nucleus to speak of. It's possible there isn't one
211 // or its just a proton or neutron. In either 164 // or its just a proton or neutron. In either case, the excitation energy
212 // (from the Lorentz vector) is not used. 165 // (from the Lorentz vector) is not used.
213 // 166 //
214 if (A == 0) 167 if (A == 0)
215 { 168 {
216 if (verboseLevel >= 2) 169 if (verboseLevel >= 2)
217 { 170 {
218 G4cout <<"No nucleus to decay" <<G4endl; 171 G4cout <<"No nucleus to decay" <<G4endl;
219 G4cout <<"oooooooooooooooooooooooooooooo 172 G4cout <<"oooooooooooooooooooooooooooooooooooooooo"
220 <<"oooooooooooooooooooooooooooooo 173 <<"oooooooooooooooooooooooooooooooooooooooo"
221 <<G4endl; 174 <<G4endl;
222 } 175 }
223 return fragmentVector; 176 return fragmentVector;
224 } 177 }
225 else if (A == 1) 178 else if (A == 1)
226 { 179 {
227 G4LorentzVector lorentzVector = theNucleus 180 G4LorentzVector lorentzVector = theNucleus.GetMomentum();
228 lorentzVector.setE(lorentzVector.e()-ex+10 181 lorentzVector.setE(lorentzVector.e()-ex+10.0*eV);
229 if (Z == 0) 182 if (Z == 0)
230 { 183 {
231 G4Fragment *fragment = new G4Fragment(lo 184 G4Fragment *fragment = new G4Fragment(lorentzVector,G4Neutron::Neutron());
232 if (fragment != nullptr) { fragment->Set <<
233 fragmentVector->push_back(fragment); 185 fragmentVector->push_back(fragment);
234 } 186 }
235 else 187 else
236 { 188 {
237 G4Fragment *fragment = new G4Fragment(lo 189 G4Fragment *fragment = new G4Fragment(lorentzVector,G4Proton::Proton());
238 if (fragment != nullptr) { fragment->Set <<
239 fragmentVector->push_back(fragment); 190 fragmentVector->push_back(fragment);
240 } 191 }
241 if (verboseLevel >= 2) 192 if (verboseLevel >= 2)
242 { 193 {
243 G4cout <<"Final fragment is in fact only 194 G4cout <<"Final fragment is in fact only a nucleon) :" <<G4endl;
244 G4cout <<(*fragmentVector)[0] <<G4endl; 195 G4cout <<(*fragmentVector)[0] <<G4endl;
245 G4cout <<"oooooooooooooooooooooooooooooo 196 G4cout <<"oooooooooooooooooooooooooooooooooooooooo"
246 <<"oooooooooooooooooooooooooooooo 197 <<"oooooooooooooooooooooooooooooooooooooooo"
247 <<G4endl; 198 <<G4endl;
248 } 199 }
249 return fragmentVector; 200 return fragmentVector;
250 } 201 }
251 // 202 //
252 // 203 //
253 // Then the number of nucleons ablated (either 204 // Then the number of nucleons ablated (either as nucleons or light nuclear
254 // fragments) is based on a simple argument fo 205 // fragments) is based on a simple argument for the binding energy per nucleon.
255 // 206 //
256 G4int DAabl = (G4int) (ex / B); 207 G4int DAabl = (G4int) (ex / B);
257 if (DAabl > A) DAabl = A; 208 if (DAabl > A) DAabl = A;
258 // The following lines are no longer accurate << 209 if (verboseLevel >= 2)
259 // if (verboseLevel >= 2) << 210 G4cout <<"Number of nucleons ejected = " <<DAabl <<G4endl;
260 // G4cout <<"Number of nucleons ejected = " <<
261 211
262 // 212 //
263 // 213 //
264 // Determine the nuclear fragment from the abl 214 // Determine the nuclear fragment from the ablation process by sampling the
265 // Rudstam equation. 215 // Rudstam equation.
266 // 216 //
267 G4int AF = A - DAabl; 217 G4int AF = A - DAabl;
268 G4int ZF = 0; 218 G4int ZF = 0;
269 <<
270 if (AF > 0) 219 if (AF > 0)
271 { 220 {
272 G4Pow* g4calc = G4Pow::GetInstance(); << 221 G4double AFd = static_cast<G4double>(AF);
273 G4double AFd = (G4double) AF; << 222 G4double R = 11.8 / std::pow(AFd, 0.45);
274 G4double R = 11.8 / g4calc->powZ(AF, 0.45) << 223 G4int minZ = Z - DAabl;
275 G4int minZ = std::max(1, Z - DAabl); << 224 if (minZ <= 0) minZ = 1;
276 // 225 //
277 // 226 //
278 // Here we define an integral probability dist 227 // Here we define an integral probability distribution based on the Rudstam
279 // equation assuming a constant AF. 228 // equation assuming a constant AF.
280 // 229 //
281 G4int zmax = std::min(199, Z); << 230 G4double sig[100];
282 G4double sum = 0.0; 231 G4double sum = 0.0;
283 for (ZF=minZ; ZF<=zmax; ++ZF) << 232 for (G4int ii=minZ; ii<= Z; ii++)
284 { 233 {
285 sum += G4Exp(-R*g4calc->powA(std::abs(ZF << 234 sum += std::exp(-R*std::pow(std::abs(ii - 0.486*AFd + 3.8E-04*AFd*AFd),1.5));
286 fSig[ZF] = sum; << 235 sig[ii] = sum;
287 } 236 }
288 // 237 //
289 // 238 //
290 // Now sample that distribution to determine a 239 // Now sample that distribution to determine a value for ZF.
291 // 240 //
292 sum *= G4UniformRand(); << 241 G4double xi = G4UniformRand();
293 for (ZF=minZ; ZF<=zmax; ++ZF) { << 242 G4int iz = minZ;
294 if(sum <= fSig[ZF]) { break; } << 243 G4bool found = false;
295 } << 244 while (iz <= Z && !found)
>> 245 {
>> 246 found = (xi <= sig[iz]/sum);
>> 247 if (!found) iz++;
>> 248 }
>> 249 if (iz > Z)
>> 250 ZF = Z;
>> 251 else
>> 252 ZF = iz;
296 } 253 }
297 G4int DZabl = Z - ZF; 254 G4int DZabl = Z - ZF;
>> 255 if (verboseLevel >= 2)
>> 256 G4cout <<"Final fragment A=" <<AF
>> 257 <<", Z=" <<ZF
>> 258 <<G4endl;
298 // 259 //
299 // 260 //
300 // Now determine the nucleons or nuclei which 261 // Now determine the nucleons or nuclei which have bee ablated. The preference
301 // is for the production of alphas, then other 262 // is for the production of alphas, then other nuclei in order of decreasing
302 // binding energy. The energies assigned to th 263 // binding energy. The energies assigned to the products of the decay are
303 // provisional for the moment (the 10eV is jus 264 // provisional for the moment (the 10eV is just to avoid errors with negative
304 // excitation energies due to rounding). 265 // excitation energies due to rounding).
305 // 266 //
306 G4double totalEpost = 0.0; 267 G4double totalEpost = 0.0;
307 evapType.clear(); 268 evapType.clear();
308 for (G4int ift=0; ift<nFragTypes; ift++) 269 for (G4int ift=0; ift<nFragTypes; ift++)
309 { 270 {
310 G4ParticleDefinition *type = fragType[ift] 271 G4ParticleDefinition *type = fragType[ift];
311 G4double n = std::floor((G4double) DAabl 272 G4double n = std::floor((G4double) DAabl / type->GetBaryonNumber() + 1.0E-10);
312 G4double n1 = 1.0E+10; 273 G4double n1 = 1.0E+10;
313 if (fragType[ift]->GetPDGCharge() > 0.0) 274 if (fragType[ift]->GetPDGCharge() > 0.0)
314 n1 = std::floor((G4double) DZabl / type- 275 n1 = std::floor((G4double) DZabl / type->GetPDGCharge() + 1.0E-10);
315 if (n > n1) n = n1; 276 if (n > n1) n = n1;
316 if (n > 0.0) 277 if (n > 0.0)
317 { 278 {
318 G4double mass = type->GetPDGMass(); 279 G4double mass = type->GetPDGMass();
319 for (G4int j=0; j<(G4int) n; j++) 280 for (G4int j=0; j<(G4int) n; j++)
320 { 281 {
321 totalEpost += mass; 282 totalEpost += mass;
322 evapType.push_back(type); 283 evapType.push_back(type);
323 } 284 }
324 DAabl -= (G4int) (n * type->GetBaryonNum 285 DAabl -= (G4int) (n * type->GetBaryonNumber() + 1.0E-10);
325 DZabl -= (G4int) (n * type->GetPDGCharge 286 DZabl -= (G4int) (n * type->GetPDGCharge() + 1.0E-10);
>> 287 if (verboseLevel >= 2)
>> 288 G4cout <<"Particle type: " <<std::setw(10) <<type->GetParticleName()
>> 289 <<", number of particles emitted = " <<n
>> 290 <<G4endl;
326 } 291 }
327 } 292 }
328 // 293 //
329 // 294 //
330 // Determine the properties of the final nucle << 295 // Determine the properties of the final nuclear fragment.
331 // the final fragment is predicted to have a n <<
332 // really it's the particle last in the vector <<
333 // final fragment. Therefore delete this from <<
334 // case. <<
335 // 296 //
336 G4double massFinalFrag = 0.0; 297 G4double massFinalFrag = 0.0;
337 if (AF > 0) << 298 if (AF > 0.0)
338 massFinalFrag = G4ParticleTable::GetPartic 299 massFinalFrag = G4ParticleTable::GetParticleTable()->GetIonTable()->
339 GetIonMass(ZF,AF); 300 GetIonMass(ZF,AF);
340 else <<
341 { <<
342 G4ParticleDefinition *type = evapType[evap <<
343 AF = type->GetBary <<
344 ZF = (G4int) (type <<
345 evapType.erase(evapType.end()-1); <<
346 } <<
347 totalEpost += massFinalFrag; 301 totalEpost += massFinalFrag;
348 // 302 //
349 // 303 //
350 // Provide verbose output on the nuclear fragm <<
351 // <<
352 if (verboseLevel >= 2) <<
353 { <<
354 G4cout <<"Final fragment A=" <<AF <<
355 <<", Z=" <<ZF <<
356 <<G4endl; <<
357 for (G4int ift=0; ift<nFragTypes; ift++) <<
358 { <<
359 G4ParticleDefinition *type = fragType[if <<
360 G4long n = std::count(evapType.cbegin(), <<
361 if (n > 0) <<
362 G4cout <<"Particle type: " <<std::setw <<
363 <<", number of particles emitte <<
364 } <<
365 } <<
366 // <<
367 // Add the total energy from the fragment. No 304 // Add the total energy from the fragment. Note that the fragment is assumed
368 // to be de-excited and does not undergo photo 305 // to be de-excited and does not undergo photo-evaporation .... I did mention
369 // this is a bit of a crude model? 306 // this is a bit of a crude model?
370 // 307 //
371 G4double massPreFrag = theNucleus.GetGr 308 G4double massPreFrag = theNucleus.GetGroundStateMass();
372 G4double totalEpre = massPreFrag + ex 309 G4double totalEpre = massPreFrag + ex;
373 G4double excess = totalEpre - tota 310 G4double excess = totalEpre - totalEpost;
374 // G4Fragment *resultNucleus(theNucleus); 311 // G4Fragment *resultNucleus(theNucleus);
375 G4Fragment *resultNucleus = new G4Fragment(A 312 G4Fragment *resultNucleus = new G4Fragment(A, Z, theNucleus.GetMomentum());
376 G4ThreeVector boost(0.0,0.0,0.0); 313 G4ThreeVector boost(0.0,0.0,0.0);
377 std::size_t nEvap = 0; << 314 G4int nEvap = 0;
378 if (produceSecondaries && evapType.size()>0) 315 if (produceSecondaries && evapType.size()>0)
379 { 316 {
380 if (excess > 0.0) 317 if (excess > 0.0)
381 { 318 {
382 SelectSecondariesByEvaporation (resultNu 319 SelectSecondariesByEvaporation (resultNucleus);
383 nEvap = fragmentVector->size(); 320 nEvap = fragmentVector->size();
384 boost = resultNucleus->GetMomentum().fin 321 boost = resultNucleus->GetMomentum().findBoostToCM();
385 if (evapType.size() > 0) 322 if (evapType.size() > 0)
386 SelectSecondariesByDefault (boost); 323 SelectSecondariesByDefault (boost);
387 } 324 }
388 else 325 else
389 SelectSecondariesByDefault(G4ThreeVector 326 SelectSecondariesByDefault(G4ThreeVector(0.0,0.0,0.0));
390 } 327 }
391 <<
392 if (AF > 0) 328 if (AF > 0)
393 { 329 {
394 G4double mass = G4ParticleTable::GetPartic 330 G4double mass = G4ParticleTable::GetParticleTable()->GetIonTable()->
395 GetIonMass(ZF,AF); 331 GetIonMass(ZF,AF);
396 G4double e = mass + 10.0*eV; 332 G4double e = mass + 10.0*eV;
397 G4double p = std::sqrt(e*e-mass*mass); 333 G4double p = std::sqrt(e*e-mass*mass);
398 G4ThreeVector direction(0.0,0.0,1.0); 334 G4ThreeVector direction(0.0,0.0,1.0);
399 G4LorentzVector lorentzVector = G4LorentzV 335 G4LorentzVector lorentzVector = G4LorentzVector(direction*p, e);
400 lorentzVector.boost(-boost); 336 lorentzVector.boost(-boost);
401 G4Fragment* frag = new G4Fragment(AF, ZF, << 337 *resultNucleus = G4Fragment(AF, ZF, lorentzVector);
402 if (frag != nullptr) { frag->SetCreatorMod << 338 fragmentVector->push_back(resultNucleus);
403 fragmentVector->push_back(frag); <<
404 } 339 }
405 delete resultNucleus; <<
406 // 340 //
407 // 341 //
408 // Provide verbose output on the ablation prod 342 // Provide verbose output on the ablation products if requested.
409 // 343 //
410 if (verboseLevel >= 2) 344 if (verboseLevel >= 2)
411 { 345 {
412 if (nEvap > 0) 346 if (nEvap > 0)
413 { 347 {
414 G4cout <<"----------------------" <<G4en 348 G4cout <<"----------------------" <<G4endl;
415 G4cout <<"Evaporated particles :" <<G4en 349 G4cout <<"Evaporated particles :" <<G4endl;
416 G4cout <<"----------------------" <<G4en 350 G4cout <<"----------------------" <<G4endl;
417 } 351 }
418 std::size_t ie = 0; << 352 G4int ie = 0;
419 for (auto iter = fragmentVector->cbegin(); << 353 G4FragmentVector::iterator iter;
420 iter != fragmentVector->cend(); << 354 for (iter = fragmentVector->begin(); iter != fragmentVector->end(); ++iter)
421 { 355 {
422 if (ie == nEvap) 356 if (ie == nEvap)
423 { 357 {
424 // G4cout <<*iter <<G4endl; << 358 G4cout <<*iter <<G4endl;
425 G4cout <<"---------------------------- 359 G4cout <<"---------------------------------" <<G4endl;
426 G4cout <<"Particles from default emiss 360 G4cout <<"Particles from default emission :" <<G4endl;
427 G4cout <<"---------------------------- 361 G4cout <<"---------------------------------" <<G4endl;
428 } 362 }
429 G4cout <<*iter <<G4endl; 363 G4cout <<*iter <<G4endl;
430 } 364 }
431 G4cout <<"oooooooooooooooooooooooooooooooo 365 G4cout <<"oooooooooooooooooooooooooooooooooooooooo"
432 <<"oooooooooooooooooooooooooooooooo 366 <<"oooooooooooooooooooooooooooooooooooooooo"
433 <<G4endl; 367 <<G4endl;
434 } 368 }
435 369
436 return fragmentVector; 370 return fragmentVector;
437 } 371 }
438 ////////////////////////////////////////////// 372 ////////////////////////////////////////////////////////////////////////////////
439 // 373 //
440 void G4WilsonAblationModel::SelectSecondariesB 374 void G4WilsonAblationModel::SelectSecondariesByEvaporation
441 (G4Fragment *intermediateNucleus) 375 (G4Fragment *intermediateNucleus)
442 { 376 {
443 G4Fragment theResidualNucleus = *intermediat <<
444 G4bool evaporate = true; 377 G4bool evaporate = true;
445 // Loop checking, 05-Aug-2015, Vladimir Ivan <<
446 while (evaporate && evapType.size() != 0) 378 while (evaporate && evapType.size() != 0)
447 { 379 {
448 // 380 //
449 // 381 //
450 // Here's the cheaky bit. We're hijacking the 382 // Here's the cheaky bit. We're hijacking the G4Evaporation model, in order to
451 // more accurately sample to kinematics, but t 383 // more accurately sample to kinematics, but the species of the nuclear
452 // fragments will be the ones of our choosing 384 // fragments will be the ones of our choosing as above.
453 // 385 //
454 std::vector <G4VEvaporationChannel*> theC << 386 std::vector <G4VEvaporationChannel*> theChannels;
455 theChannels1.clear(); << 387 theChannels.clear();
456 std::vector <G4VEvaporationChannel*>::iter <<
457 VectorOfFragmentTypes::iterator iter; 388 VectorOfFragmentTypes::iterator iter;
458 std::vector <VectorOfFragmentTypes::iterat 389 std::vector <VectorOfFragmentTypes::iterator> iters;
459 iters.clear(); 390 iters.clear();
460 iter = std::find(evapType.begin(), evapTyp 391 iter = std::find(evapType.begin(), evapType.end(), G4Alpha::Alpha());
461 if (iter != evapType.end()) 392 if (iter != evapType.end())
462 { 393 {
463 theChannels1.push_back(new G4AlphaEvapor << 394 theChannels.push_back(new G4AlphaEvaporationChannel);
464 i = theChannels1.end() - 1; <<
465 (*i)->SetOPTxs(OPTxs); <<
466 (*i)->UseSICB(useSICB); <<
467 // (*i)->Initialize(theResidualNucleus); <<
468 iters.push_back(iter); 395 iters.push_back(iter);
469 } 396 }
470 iter = std::find(evapType.begin(), evapTyp 397 iter = std::find(evapType.begin(), evapType.end(), G4He3::He3());
471 if (iter != evapType.end()) 398 if (iter != evapType.end())
472 { 399 {
473 theChannels1.push_back(new G4He3Evaporat << 400 theChannels.push_back(new G4He3EvaporationChannel);
474 i = theChannels1.end() - 1; <<
475 (*i)->SetOPTxs(OPTxs); <<
476 (*i)->UseSICB(useSICB); <<
477 // (*i)->Initialize(theResidualNucleus); <<
478 iters.push_back(iter); 401 iters.push_back(iter);
479 } 402 }
480 iter = std::find(evapType.begin(), evapTyp 403 iter = std::find(evapType.begin(), evapType.end(), G4Triton::Triton());
481 if (iter != evapType.end()) 404 if (iter != evapType.end())
482 { 405 {
483 theChannels1.push_back(new G4TritonEvapo << 406 theChannels.push_back(new G4TritonEvaporationChannel);
484 i = theChannels1.end() - 1; <<
485 (*i)->SetOPTxs(OPTxs); <<
486 (*i)->UseSICB(useSICB); <<
487 // (*i)->Initialize(theResidualNucleus); <<
488 iters.push_back(iter); 407 iters.push_back(iter);
489 } 408 }
490 iter = std::find(evapType.begin(), evapTyp 409 iter = std::find(evapType.begin(), evapType.end(), G4Deuteron::Deuteron());
491 if (iter != evapType.end()) 410 if (iter != evapType.end())
492 { 411 {
493 theChannels1.push_back(new G4DeuteronEva << 412 theChannels.push_back(new G4DeuteronEvaporationChannel);
494 i = theChannels1.end() - 1; <<
495 (*i)->SetOPTxs(OPTxs); <<
496 (*i)->UseSICB(useSICB); <<
497 // (*i)->Initialize(theResidualNucleus); <<
498 iters.push_back(iter); 413 iters.push_back(iter);
499 } 414 }
500 iter = std::find(evapType.begin(), evapTyp 415 iter = std::find(evapType.begin(), evapType.end(), G4Proton::Proton());
501 if (iter != evapType.end()) 416 if (iter != evapType.end())
502 { 417 {
503 theChannels1.push_back(new G4ProtonEvapo << 418 theChannels.push_back(new G4ProtonEvaporationChannel);
504 i = theChannels1.end() - 1; <<
505 (*i)->SetOPTxs(OPTxs); <<
506 (*i)->UseSICB(useSICB); <<
507 // (*i)->Initialize(theResidualNucleus); <<
508 iters.push_back(iter); 419 iters.push_back(iter);
509 } 420 }
510 iter = std::find(evapType.begin(), evapTyp 421 iter = std::find(evapType.begin(), evapType.end(), G4Neutron::Neutron());
511 if (iter != evapType.end()) 422 if (iter != evapType.end())
512 { 423 {
513 theChannels1.push_back(new G4NeutronEvap << 424 theChannels.push_back(new G4NeutronEvaporationChannel);
514 i = theChannels1.end() - 1; <<
515 (*i)->SetOPTxs(OPTxs); <<
516 (*i)->UseSICB(useSICB); <<
517 // (*i)->Initialize(theResidualNucleus); <<
518 iters.push_back(iter); 425 iters.push_back(iter);
519 } 426 }
520 std::size_t nChannels = theChannels1.size( << 427 G4int nChannels = theChannels.size();
521 428
522 G4double totalProb = 0.0; << 429 std::vector<G4VEvaporationChannel*>::iterator iterEv;
523 G4int ich = 0; << 430 for (iterEv=theChannels.begin(); iterEv!=theChannels.end(); iterEv++)
524 G4double probEvapType[6] = {0.0}; << 431 (*iterEv)->Initialize(*intermediateNucleus);
525 for (auto iterEv=theChannels1.cbegin(); << 432 G4double totalProb = std::accumulate(theChannels.begin(),
526 iterEv!=theChannels1.cend(); ++i << 433 theChannels.end(), 0.0, SumProbabilities());
527 totalProb += (*iterEv)->GetEmissionProba << 434 if (totalProb > 0.0)
528 probEvapType[ich] = totalProb; << 435 {
529 ++ich; <<
530 } <<
531 if (totalProb > 0.0) { <<
532 // 436 //
533 // 437 //
534 // The emission probability for at least one o 438 // The emission probability for at least one of the evaporation channels is
535 // positive, therefore work out which one shou 439 // positive, therefore work out which one should be selected and decay
536 // the nucleus. 440 // the nucleus.
537 // 441 //
538 G4double xi = totalProb*G4UniformRand(); << 442 G4double totalProb1 = 0.0;
539 std::size_t ii = 0; << 443 G4double probEvapType[6] = {0.0};
540 for (ii=0; ii<nChannels; ++ii) << 444 for (G4int ich=0; ich<nChannels; ich++)
541 { 445 {
542 if (xi < probEvapType[ii]) { break; } << 446 totalProb1 += theChannels[ich]->GetEmissionProbability();
543 } << 447 probEvapType[ich] = totalProb1 / totalProb;
544 if (ii >= nChannels) { ii = nChannels - <<
545 G4FragmentVector *evaporationResult = th <<
546 BreakUpFragment(intermediateNucleus); <<
547 if ((*evaporationResult)[0] != nullptr) <<
548 { <<
549 (*evaporationResult)[0]->SetCreatorMod <<
550 } 448 }
>> 449 G4double xi = G4UniformRand();
>> 450 G4int i = 0;
>> 451 for (i=0; i<nChannels; i++)
>> 452 if (xi < probEvapType[i]) break;
>> 453 if (i > nChannels) i = nChannels - 1;
>> 454 G4FragmentVector *evaporationResult = theChannels[i]->
>> 455 BreakUp(*intermediateNucleus);
551 fragmentVector->push_back((*evaporationR 456 fragmentVector->push_back((*evaporationResult)[0]);
552 intermediateNucleus = (*evaporationResul << 457 *intermediateNucleus = *(*evaporationResult)[1];
>> 458 delete evaporationResult->back();
553 delete evaporationResult; 459 delete evaporationResult;
>> 460 evapType.erase(iters[i]);
554 } 461 }
555 else 462 else
556 { 463 {
557 // 464 //
558 // 465 //
559 // Probability for further evaporation is nil 466 // Probability for further evaporation is nil so have to escape from this
560 // routine and set the energies of the seconda 467 // routine and set the energies of the secondaries to 10eV.
561 // 468 //
562 evaporate = false; 469 evaporate = false;
563 } 470 }
564 } 471 }
565 472
566 return; 473 return;
567 } 474 }
568 ////////////////////////////////////////////// 475 ////////////////////////////////////////////////////////////////////////////////
569 // 476 //
570 void G4WilsonAblationModel::SelectSecondariesB 477 void G4WilsonAblationModel::SelectSecondariesByDefault (G4ThreeVector boost)
571 { 478 {
572 for (std::size_t i=0; i<evapType.size(); ++i << 479 for (unsigned i=0; i<evapType.size(); i++)
573 { 480 {
574 G4ParticleDefinition *type = evapType[i]; << 481 G4ParticleDefinition *type = fragType[i];
575 G4double mass = type->GetPDGM 482 G4double mass = type->GetPDGMass();
576 G4double e = mass + 10.0*e 483 G4double e = mass + 10.0*eV;
577 G4double p = std::sqrt(e*e 484 G4double p = std::sqrt(e*e-mass*mass);
578 G4double costheta = 2.0*G4Uniform 485 G4double costheta = 2.0*G4UniformRand() - 1.0;
579 G4double sintheta = std::sqrt((1. 486 G4double sintheta = std::sqrt((1.0 - costheta)*(1.0 + costheta));
580 G4double phi = twopi * G4Uni 487 G4double phi = twopi * G4UniformRand() * rad;
581 G4ThreeVector direction(sintheta*std::cos( 488 G4ThreeVector direction(sintheta*std::cos(phi),sintheta*std::sin(phi),costheta);
582 G4LorentzVector lorentzVector = G4LorentzV 489 G4LorentzVector lorentzVector = G4LorentzVector(direction*p, e);
583 lorentzVector.boost(-boost); 490 lorentzVector.boost(-boost);
584 // Possibility that the following line is not <<
585 // from particle definition. Force values. P <<
586 // G4Fragment *fragment = <<
587 // new G4Fragment(lorentzVector, type); <<
588 G4int A = type->GetBaryonNumber(); <<
589 G4int Z = (G4int) (type->GetPDGCharge() + <<
590 G4Fragment *fragment = 491 G4Fragment *fragment =
591 new G4Fragment(A, Z, lorentzVector); << 492 new G4Fragment(lorentzVector, type);
592 if (fragment != nullptr) { fragment->SetCr <<
593 fragmentVector->push_back(fragment); 493 fragmentVector->push_back(fragment);
594 } 494 }
595 } 495 }
596 ////////////////////////////////////////////// 496 ////////////////////////////////////////////////////////////////////////////////
597 // 497 //
598 void G4WilsonAblationModel::PrintWelcomeMessag 498 void G4WilsonAblationModel::PrintWelcomeMessage ()
599 { 499 {
600 G4cout <<G4endl; 500 G4cout <<G4endl;
601 G4cout <<" ********************************* 501 G4cout <<" *****************************************************************"
602 <<G4endl; 502 <<G4endl;
603 G4cout <<" Nuclear ablation model for nuclea 503 G4cout <<" Nuclear ablation model for nuclear-nuclear interactions activated"
604 <<G4endl; 504 <<G4endl;
605 G4cout <<" (Written by QinetiQ Ltd for the E 505 G4cout <<" (Written by QinetiQ Ltd for the European Space Agency)"
606 <<G4endl; <<
607 G4cout <<" !!! WARNING: This model is not we <<
608 <<G4endl; 506 <<G4endl;
609 G4cout <<" ********************************* 507 G4cout <<" *****************************************************************"
610 <<G4endl; 508 <<G4endl;
611 G4cout << G4endl; 509 G4cout << G4endl;
612 510
613 return; 511 return;
614 } 512 }
615 ////////////////////////////////////////////// 513 ////////////////////////////////////////////////////////////////////////////////
616 // 514 //
617 515