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