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35 // 35 //
36 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% << 36 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
37 // 37 //
38 // MODULE: G4WilsonAbrasionModel. 38 // MODULE: G4WilsonAbrasionModel.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 // 18 January 2005, M H Mendenhall, Vanderbilt 58 // 18 January 2005, M H Mendenhall, Vanderbilt University, US
59 // Pointers to theAbrasionGeometry and product 59 // Pointers to theAbrasionGeometry and products generated by the deexcitation
60 // handler deleted to prevent memory leaks. A 60 // handler deleted to prevent memory leaks. Also particle change of projectile
61 // fragment previously not properly defined. 61 // fragment previously not properly defined.
62 // 62 //
63 // 08 December 2009, P R Truscott, QinetiQ Ltd 63 // 08 December 2009, P R Truscott, QinetiQ Ltd, Ltd
64 // ver 1.0 64 // ver 1.0
65 // There was originally a possibility of the m 65 // There was originally a possibility of the minimum impact parameter AFTER
66 // considering Couloumb repulsion, rm, being t 66 // considering Couloumb repulsion, rm, being too large. Now if:
67 // rm >= fradius * (rP + rT) 67 // rm >= fradius * (rP + rT)
68 // where fradius is currently 0.99, then it is 68 // where fradius is currently 0.99, then it is assumed the primary track is
69 // unchanged. Additional conditions to escape 69 // unchanged. Additional conditions to escape from while-loop over impact
70 // parameter: if the loop counter evtcnt reach 70 // parameter: if the loop counter evtcnt reaches 1000, the primary track is
71 // continued. 71 // continued.
72 // Additional clauses have been included in 72 // Additional clauses have been included in
73 // G4WilsonAbrasionModel::GetNucleonInduced 73 // G4WilsonAbrasionModel::GetNucleonInducedExcitation
74 // Previously it was possible to get sqrt of n << 74 // Previously it was possible to get sqrt of negative number as Wilson algorithm
75 // algorithm not properly defined if either: << 75 // not properly defined if either:
76 // rT > rP && rsq < rTsq - rPsq) or (rP > r 76 // rT > rP && rsq < rTsq - rPsq) or (rP > rT && rsq < rPsq - rTsq)
77 // 77 //
78 // 12 June 2012, A. Ribon, CERN, Switzerland << 78 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
79 // Fixing trivial warning errors of shadowed v << 79 ////////////////////////////////////////////////////////////////////////////////
80 // <<
81 // 4 August 2015, A. Ribon, CERN, Switzerland <<
82 // Replacing std::exp and std::pow with the fa <<
83 // <<
84 // 7 August 2015, A. Ribon, CERN, Switzerland <<
85 // Checking of 'while' loops. <<
86 // 80 //
87 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% <<
88 ////////////////////////////////////////////// <<
89 <<
90 #include "G4WilsonAbrasionModel.hh" 81 #include "G4WilsonAbrasionModel.hh"
91 #include "G4WilsonRadius.hh" 82 #include "G4WilsonRadius.hh"
92 #include "G4NuclearAbrasionGeometry.hh" 83 #include "G4NuclearAbrasionGeometry.hh"
93 #include "G4WilsonAblationModel.hh" 84 #include "G4WilsonAblationModel.hh"
94 85
95 #include "G4PhysicalConstants.hh" <<
96 #include "G4SystemOfUnits.hh" <<
97 #include "G4ExcitationHandler.hh" 86 #include "G4ExcitationHandler.hh"
98 #include "G4Evaporation.hh" 87 #include "G4Evaporation.hh"
>> 88 #include "G4FermiBreakUp.hh"
>> 89 #include "G4StatMF.hh"
99 #include "G4ParticleDefinition.hh" 90 #include "G4ParticleDefinition.hh"
100 #include "G4DynamicParticle.hh" 91 #include "G4DynamicParticle.hh"
101 #include "Randomize.hh" 92 #include "Randomize.hh"
102 #include "G4Fragment.hh" 93 #include "G4Fragment.hh"
>> 94 #include "G4VNuclearDensity.hh"
>> 95 #include "G4NuclearShellModelDensity.hh"
>> 96 #include "G4NuclearFermiDensity.hh"
>> 97 #include "G4FermiMomentum.hh"
103 #include "G4ReactionProductVector.hh" 98 #include "G4ReactionProductVector.hh"
104 #include "G4LorentzVector.hh" 99 #include "G4LorentzVector.hh"
105 #include "G4ParticleMomentum.hh" 100 #include "G4ParticleMomentum.hh"
106 #include "G4Poisson.hh" 101 #include "G4Poisson.hh"
107 #include "G4ParticleTable.hh" 102 #include "G4ParticleTable.hh"
108 #include "G4IonTable.hh" 103 #include "G4IonTable.hh"
109 #include "globals.hh" 104 #include "globals.hh"
110 << 105 ////////////////////////////////////////////////////////////////////////////////
111 #include "G4Exp.hh" << 106 //
112 #include "G4Pow.hh" << 107 G4WilsonAbrasionModel::G4WilsonAbrasionModel (G4bool useAblation1)
113 << 108 :G4HadronicInteraction("G4WilsonAbrasion")
114 #include "G4PhysicsModelCatalog.hh" <<
115 <<
116 <<
117 G4WilsonAbrasionModel::G4WilsonAbrasionModel(G <<
118 : G4HadronicInteraction("G4WilsonAbrasion"), <<
119 { 109 {
120 // Send message to stdout to advise that the << 110 //
>> 111 //
>> 112 // Send message to stdout to advise that the G4Abrasion model is being used.
>> 113 //
121 PrintWelcomeMessage(); 114 PrintWelcomeMessage();
122 << 115 //
123 // Set the default verbose level to 0 - no o << 116 //
>> 117 // Set the default verbose level to 0 - no output.
>> 118 //
124 verboseLevel = 0; 119 verboseLevel = 0;
125 useAblation = useAblation1; 120 useAblation = useAblation1;
126 theAblation = nullptr; << 121 //
127 << 122 //
128 // No de-excitation handler has been supplie << 123 // No de-excitation handler has been supplied - define the default handler.
129 << 124 //
130 theExcitationHandler = new G4ExcitationHandl << 125 theExcitationHandler = new G4ExcitationHandler;
>> 126 theExcitationHandlerx = new G4ExcitationHandler;
131 if (useAblation) 127 if (useAblation)
132 { 128 {
133 theAblation = new G4WilsonAblationModel; 129 theAblation = new G4WilsonAblationModel;
134 theAblation->SetVerboseLevel(verboseLevel) 130 theAblation->SetVerboseLevel(verboseLevel);
135 theExcitationHandler->SetEvaporation(theAb << 131 theExcitationHandler->SetEvaporation(theAblation);
>> 132 theExcitationHandlerx->SetEvaporation(theAblation);
136 } 133 }
137 << 134 else
138 // Set the minimum and maximum range for the << 135 {
139 // this is in energy per nucleon number). << 136 theAblation = NULL;
140 << 137 G4Evaporation * theEvaporation = new G4Evaporation;
>> 138 G4FermiBreakUp * theFermiBreakUp = new G4FermiBreakUp;
>> 139 G4StatMF * theMF = new G4StatMF;
>> 140 theExcitationHandler->SetEvaporation(theEvaporation);
>> 141 theExcitationHandler->SetFermiModel(theFermiBreakUp);
>> 142 theExcitationHandler->SetMultiFragmentation(theMF);
>> 143 theExcitationHandler->SetMaxAandZForFermiBreakUp(12, 6);
>> 144 theExcitationHandler->SetMinEForMultiFrag(5.0*MeV);
>> 145
>> 146 theEvaporation = new G4Evaporation;
>> 147 theFermiBreakUp = new G4FermiBreakUp;
>> 148 theExcitationHandlerx->SetEvaporation(theEvaporation);
>> 149 theExcitationHandlerx->SetFermiModel(theFermiBreakUp);
>> 150 theExcitationHandlerx->SetMaxAandZForFermiBreakUp(12, 6);
>> 151 }
>> 152 //
>> 153 //
>> 154 // Set the minimum and maximum range for the model (despite nomanclature, this
>> 155 // is in energy per nucleon number).
>> 156 //
141 SetMinEnergy(70.0*MeV); 157 SetMinEnergy(70.0*MeV);
142 SetMaxEnergy(10.1*GeV); 158 SetMaxEnergy(10.1*GeV);
143 isBlocked = false; 159 isBlocked = false;
144 << 160 //
145 // npK, when mutiplied by the nuclear Fermi << 161 //
146 // momentum over which the secondary nucleon << 162 // npK, when mutiplied by the nuclear Fermi momentum, determines the range of
147 << 163 // momentum over which the secondary nucleon momentum is sampled.
148 r0sq = 0.0; << 164 //
149 npK = 5.0; << 165 npK = 5.0;
150 B = 10.0 * MeV; << 166 B = 10.0 * MeV;
151 third = 1.0 / 3.0; << 167 third = 1.0 / 3.0;
152 fradius = 0.99; << 168 fradius = 0.99;
153 conserveEnergy = false; << 169 conserveEnergy = false;
154 conserveMomentum = true; 170 conserveMomentum = true;
155 <<
156 // Creator model ID for the secondaries crea <<
157 secID = G4PhysicsModelCatalog::GetModelID( " <<
158 } 171 }
159 << 172 ////////////////////////////////////////////////////////////////////////////////
160 void G4WilsonAbrasionModel::ModelDescription(s << 173 //
161 { << 174 G4WilsonAbrasionModel::G4WilsonAbrasionModel (G4ExcitationHandler *aExcitationHandler)
162 outFile << "G4WilsonAbrasionModel is a macro <<
163 << "nucleus-nucleus collisions using <<
164 << "The smaller projectile nucleus g <<
165 << "target nucleus, leaving a residu <<
166 << "region where the projectile and <<
167 << "is then treated as a highly exci <<
168 << "model is based on the NUCFRG2 mo <<
169 << "projectile energies between 70 M <<
170 } <<
171 <<
172 G4WilsonAbrasionModel::G4WilsonAbrasionModel(G <<
173 G4HadronicInteraction("G4WilsonAbrasion"), se <<
174 { 175 {
>> 176 //
>> 177 //
175 // Send message to stdout to advise that the G 178 // Send message to stdout to advise that the G4Abrasion model is being used.
176 << 179 //
177 PrintWelcomeMessage(); 180 PrintWelcomeMessage();
178 << 181 //
>> 182 //
179 // Set the default verbose level to 0 - no out 183 // Set the default verbose level to 0 - no output.
180 << 184 //
181 verboseLevel = 0; 185 verboseLevel = 0;
182 << 186 //
183 theAblation = nullptr; //A.R. 26-Jul-2012 <<
184 useAblation = false; //A.R. 14-Aug-2012 <<
185 <<
186 // 187 //
187 // The user is able to provide the excitation 188 // The user is able to provide the excitation handler as well as an argument
188 // which is provided in this instantiation is 189 // which is provided in this instantiation is used to determine
189 // whether the spectators of the interaction a 190 // whether the spectators of the interaction are free following the abrasion.
190 // 191 //
191 theExcitationHandler = aExcitationHandler; << 192 theExcitationHandler = aExcitationHandler;
>> 193 theExcitationHandlerx = new G4ExcitationHandler;
>> 194 G4Evaporation * theEvaporation = new G4Evaporation;
>> 195 G4FermiBreakUp * theFermiBreakUp = new G4FermiBreakUp;
>> 196 theExcitationHandlerx->SetEvaporation(theEvaporation);
>> 197 theExcitationHandlerx->SetFermiModel(theFermiBreakUp);
>> 198 theExcitationHandlerx->SetMaxAandZForFermiBreakUp(12, 6);
192 // 199 //
193 // 200 //
194 // Set the minimum and maximum range for the m 201 // Set the minimum and maximum range for the model (despite nomanclature, this
195 // is in energy per nucleon number). 202 // is in energy per nucleon number).
196 // 203 //
197 SetMinEnergy(70.0*MeV); 204 SetMinEnergy(70.0*MeV);
198 SetMaxEnergy(10.1*GeV); 205 SetMaxEnergy(10.1*GeV);
199 isBlocked = false; 206 isBlocked = false;
200 // 207 //
201 // 208 //
202 // npK, when mutiplied by the nuclear Fermi mo 209 // npK, when mutiplied by the nuclear Fermi momentum, determines the range of
203 // momentum over which the secondary nucleon m 210 // momentum over which the secondary nucleon momentum is sampled.
204 // 211 //
205 r0sq = 0.0; <<
206 npK = 5.0; 212 npK = 5.0;
207 B = 10.0 * MeV; 213 B = 10.0 * MeV;
208 third = 1.0 / 3.0; 214 third = 1.0 / 3.0;
209 fradius = 0.99; 215 fradius = 0.99;
210 conserveEnergy = false; 216 conserveEnergy = false;
211 conserveMomentum = true; 217 conserveMomentum = true;
212 <<
213 // Creator model ID for the secondaries crea <<
214 secID = G4PhysicsModelCatalog::GetModelID( " <<
215 } 218 }
216 ////////////////////////////////////////////// 219 ////////////////////////////////////////////////////////////////////////////////
217 // 220 //
218 G4WilsonAbrasionModel::~G4WilsonAbrasionModel( << 221 G4WilsonAbrasionModel::~G4WilsonAbrasionModel ()
219 { 222 {
220 delete theExcitationHandler; << 223 //
>> 224 //
>> 225 // The destructor doesn't have to do a great deal!
>> 226 //
>> 227 if (theExcitationHandler) delete theExcitationHandler;
>> 228 if (theExcitationHandlerx) delete theExcitationHandlerx;
>> 229 if (useAblation) delete theAblation;
>> 230 // delete theExcitationHandler;
>> 231 // delete theExcitationHandlerx;
221 } 232 }
222 ////////////////////////////////////////////// 233 ////////////////////////////////////////////////////////////////////////////////
223 // 234 //
224 G4HadFinalState *G4WilsonAbrasionModel::ApplyY 235 G4HadFinalState *G4WilsonAbrasionModel::ApplyYourself (
225 const G4HadProjectile &theTrack, G4Nucleus & 236 const G4HadProjectile &theTrack, G4Nucleus &theTarget)
226 { 237 {
227 // 238 //
228 // 239 //
229 // The secondaries will be returned in G4HadFi 240 // The secondaries will be returned in G4HadFinalState &theParticleChange -
230 // initialise this. The original track will a 241 // initialise this. The original track will always be discontinued and
231 // secondaries followed. 242 // secondaries followed.
232 // 243 //
233 theParticleChange.Clear(); 244 theParticleChange.Clear();
234 theParticleChange.SetStatusChange(stopAndKil 245 theParticleChange.SetStatusChange(stopAndKill);
235 // 246 //
236 // 247 //
237 // Get relevant information about the projecti 248 // Get relevant information about the projectile and target (A, Z, energy/nuc,
238 // momentum, etc). 249 // momentum, etc).
239 // 250 //
240 const G4ParticleDefinition *definitionP = th 251 const G4ParticleDefinition *definitionP = theTrack.GetDefinition();
241 const G4double AP = definitionP->GetBaryonN << 252 const G4double AP = definitionP->GetBaryonNumber();
242 const G4double ZP = definitionP->GetPDGChar << 253 const G4double ZP = definitionP->GetPDGCharge();
243 G4LorentzVector pP = theTrack.Get4Momentum() << 254 G4LorentzVector pP = theTrack.Get4Momentum();
244 G4double E = theTrack.GetKineticEner << 255 G4double E = theTrack.GetKineticEnergy()/AP;
245 G4double AT = theTarget.GetA_asInt(); << 256 G4double AT = theTarget.GetN();
246 G4double ZT = theTarget.GetZ_asInt(); << 257 G4double ZT = theTarget.GetZ();
247 G4double TotalEPre = theTrack.GetTotalEnergy << 258 G4double TotalEPre = theTrack.GetTotalEnergy() +
248 theTarget.AtomicMass(AT, ZT) + theTarget.G 259 theTarget.AtomicMass(AT, ZT) + theTarget.GetEnergyDeposit();
249 G4double TotalEPost = 0.0; 260 G4double TotalEPost = 0.0;
250 // 261 //
251 // 262 //
252 // Determine the radii of the projectile and t 263 // Determine the radii of the projectile and target nuclei.
253 // 264 //
254 G4WilsonRadius aR; 265 G4WilsonRadius aR;
255 G4double rP = aR.GetWilsonRadius(AP); 266 G4double rP = aR.GetWilsonRadius(AP);
256 G4double rT = aR.GetWilsonRadius(AT); 267 G4double rT = aR.GetWilsonRadius(AT);
257 G4double rPsq = rP * rP; 268 G4double rPsq = rP * rP;
258 G4double rTsq = rT * rT; 269 G4double rTsq = rT * rT;
259 if (verboseLevel >= 2) 270 if (verboseLevel >= 2)
260 { 271 {
261 G4cout <<"################################ 272 G4cout <<"########################################"
262 <<"################################ 273 <<"########################################"
263 <<G4endl; 274 <<G4endl;
264 G4cout.precision(6); 275 G4cout.precision(6);
265 G4cout <<"IN G4WilsonAbrasionModel" <<G4en 276 G4cout <<"IN G4WilsonAbrasionModel" <<G4endl;
266 G4cout <<"Initial projectile A=" <<AP 277 G4cout <<"Initial projectile A=" <<AP
267 <<", Z=" <<ZP 278 <<", Z=" <<ZP
268 <<", radius = " <<rP/fermi <<" fm" 279 <<", radius = " <<rP/fermi <<" fm"
269 <<G4endl; 280 <<G4endl;
270 G4cout <<"Initial target A=" <<AT 281 G4cout <<"Initial target A=" <<AT
271 <<", Z=" <<ZT 282 <<", Z=" <<ZT
272 <<", radius = " <<rT/fermi <<" fm" 283 <<", radius = " <<rT/fermi <<" fm"
273 <<G4endl; 284 <<G4endl;
274 G4cout <<"Projectile momentum and Energy/n 285 G4cout <<"Projectile momentum and Energy/nuc = " <<pP <<" ," <<E <<G4endl;
275 } 286 }
276 // 287 //
277 // 288 //
278 // The following variables are used to determi 289 // The following variables are used to determine the impact parameter in the
279 // near-field (i.e. taking into consideration 290 // near-field (i.e. taking into consideration the electrostatic repulsion).
280 // 291 //
281 G4double rm = ZP * ZT * elm_coupling / (E 292 G4double rm = ZP * ZT * elm_coupling / (E * AP);
282 G4double r = 0.0; 293 G4double r = 0.0;
283 G4double rsq = 0.0; 294 G4double rsq = 0.0;
284 // 295 //
285 // 296 //
286 // Initialise some of the variables which wll 297 // Initialise some of the variables which wll be used to calculate the chord-
287 // length for nucleons in the projectile and t 298 // length for nucleons in the projectile and target, and hence calculate the
288 // number of abraded nucleons and the excitati 299 // number of abraded nucleons and the excitation energy.
289 // 300 //
290 G4NuclearAbrasionGeometry *theAbrasionGeomet << 301 G4NuclearAbrasionGeometry *theAbrasionGeometry = NULL;
291 G4double CT = 0.0; 302 G4double CT = 0.0;
292 G4double F = 0.0; 303 G4double F = 0.0;
293 G4int Dabr = 0; 304 G4int Dabr = 0;
294 // 305 //
295 // 306 //
296 // The following loop is performed until the n 307 // The following loop is performed until the number of nucleons which are
297 // abraded by the process is >1, i.e. an inter 308 // abraded by the process is >1, i.e. an interaction MUST occur.
298 // 309 //
299 G4bool skipInteraction = false; // It will << 310 while (Dabr == 0)
300 const G4int maxNumberOfLoops = 1000; <<
301 G4int loopCounter = -1; <<
302 while (Dabr == 0 && ++loopCounter < maxNumbe <<
303 { 311 {
>> 312 // Added by MHM 20050119 to fix leaking memory on second pass through this loop
>> 313 if (theAbrasionGeometry)
>> 314 {
>> 315 delete theAbrasionGeometry;
>> 316 theAbrasionGeometry = NULL;
>> 317 }
304 // 318 //
305 // 319 //
306 // Sample the impact parameter. For the momen 320 // Sample the impact parameter. For the moment, this class takes account of
307 // electrostatic effects on the impact paramet 321 // electrostatic effects on the impact parameter, but (like HZETRN AND NUCFRG2)
308 // does not make any correction for the effect 322 // does not make any correction for the effects of nuclear-nuclear repulsion.
309 // 323 //
310 G4double rPT = rP + rT; 324 G4double rPT = rP + rT;
311 G4double rPTsq = rPT * rPT; 325 G4double rPTsq = rPT * rPT;
312 // 326 //
313 // 327 //
314 // This is a "catch" to make sure we don't go 328 // This is a "catch" to make sure we don't go into an infinite loop because the
315 // energy is too low to overcome nuclear repul 329 // energy is too low to overcome nuclear repulsion. PRT 20091023. If the
316 // value of rm < fradius * rPT then we're unli 330 // value of rm < fradius * rPT then we're unlikely to sample a small enough
317 // impact parameter (energy of incident partic << 331 // impact parameter (energy of incident particle is too low). Return primary
>> 332 // and don't complete nuclear interaction analysis.
318 // 333 //
319 if (rm >= fradius * rPT) { 334 if (rm >= fradius * rPT) {
320 skipInteraction = true; << 335 theParticleChange.SetStatusChange(isAlive);
>> 336 theParticleChange.SetEnergyChange(theTrack.GetKineticEnergy());
>> 337 theParticleChange.SetMomentumChange(theTrack.Get4Momentum().vect().unit());
>> 338 if (verboseLevel >= 2) {
>> 339 G4cout <<"Particle energy too low to overcome repulsion." <<G4endl;
>> 340 G4cout <<"Event rejected and original track maintained" <<G4endl;
>> 341 G4cout <<"########################################"
>> 342 <<"########################################"
>> 343 <<G4endl;
>> 344 }
>> 345 return &theParticleChange;
321 } 346 }
322 // 347 //
323 // 348 //
324 // Now sample impact parameter until the crite 349 // Now sample impact parameter until the criterion is met that projectile
325 // and target overlap, but repulsion is taken 350 // and target overlap, but repulsion is taken into consideration.
326 // 351 //
327 G4int evtcnt = 0; 352 G4int evtcnt = 0;
328 r = 1.1 * rPT; 353 r = 1.1 * rPT;
329 while (r > rPT && ++evtcnt < 1000) /* Loo << 354 while (r > rPT && ++evtcnt < 1000)
330 { 355 {
331 G4double bsq = rPTsq * G4UniformRand(); 356 G4double bsq = rPTsq * G4UniformRand();
332 r = (rm + std::sqrt(rm*rm + 4 357 r = (rm + std::sqrt(rm*rm + 4.0*bsq)) / 2.0;
333 } 358 }
334 // 359 //
335 // 360 //
336 // We've tried to sample this 1000 times, but << 361 // We've tried to sample this 1000 times, but failed. Assume nuclei do not
>> 362 // collide.
337 // 363 //
338 if (evtcnt >= 1000) { 364 if (evtcnt >= 1000) {
339 skipInteraction = true; << 365 theParticleChange.SetStatusChange(isAlive);
>> 366 theParticleChange.SetEnergyChange(theTrack.GetKineticEnergy());
>> 367 theParticleChange.SetMomentumChange(theTrack.Get4Momentum().vect().unit());
>> 368 if (verboseLevel >= 2) {
>> 369 G4cout <<"Particle energy too low to overcome repulsion." <<G4endl;
>> 370 G4cout <<"Event rejected and original track maintained" <<G4endl;
>> 371 G4cout <<"########################################"
>> 372 <<"########################################"
>> 373 <<G4endl;
>> 374 }
>> 375 return &theParticleChange;
340 } 376 }
341 377
>> 378
342 rsq = r * r; 379 rsq = r * r;
343 // 380 //
344 // 381 //
345 // Now determine the chord-length through the 382 // Now determine the chord-length through the target nucleus.
346 // 383 //
347 if (rT > rP) 384 if (rT > rP)
348 { 385 {
349 G4double x = (rPsq + rsq - rTsq) / 2.0 / 386 G4double x = (rPsq + rsq - rTsq) / 2.0 / r;
350 if (x > 0.0) CT = 2.0 * std::sqrt(rTsq - 387 if (x > 0.0) CT = 2.0 * std::sqrt(rTsq - x*x);
351 else CT = 2.0 * std::sqrt(rTsq - 388 else CT = 2.0 * std::sqrt(rTsq - rsq);
352 } 389 }
353 else 390 else
354 { 391 {
355 G4double x = (rTsq + rsq - rPsq) / 2.0 / 392 G4double x = (rTsq + rsq - rPsq) / 2.0 / r;
356 if (x > 0.0) CT = 2.0 * std::sqrt(rTsq - 393 if (x > 0.0) CT = 2.0 * std::sqrt(rTsq - x*x);
357 else CT = 2.0 * rT; 394 else CT = 2.0 * rT;
358 } 395 }
359 // 396 //
360 // 397 //
361 // Determine the number of abraded nucleons. 398 // Determine the number of abraded nucleons. Note that the mean number of
362 // abraded nucleons is used to sample the Pois 399 // abraded nucleons is used to sample the Poisson distribution. The Poisson
363 // distribution is sampled only ten times with 400 // distribution is sampled only ten times with the current impact parameter,
364 // and if it fails after this to find a case f 401 // and if it fails after this to find a case for which the number of abraded
365 // nucleons >1, the impact parameter is re-sam 402 // nucleons >1, the impact parameter is re-sampled.
366 // 403 //
367 delete theAbrasionGeometry; <<
368 theAbrasionGeometry = new G4NuclearAbrasio 404 theAbrasionGeometry = new G4NuclearAbrasionGeometry(AP,AT,r);
369 F = theAbrasionGeometry- 405 F = theAbrasionGeometry->F();
370 G4double lambda = 16.6*fermi / G4Pow:: << 406 G4double lambda = 16.6*fermi / std::pow(E/MeV,0.26);
371 G4double Mabr = F * AP * (1.0 - G4Ex << 407 G4double Mabr = F * AP * (1.0 - std::exp(-CT/lambda));
372 G4long n = 0; 408 G4long n = 0;
373 for (G4int i = 0; i<10; ++i) << 409 for (G4int i = 0; i<10; i++)
374 { 410 {
375 n = G4Poisson(Mabr); 411 n = G4Poisson(Mabr);
376 if (n > 0) 412 if (n > 0)
377 { 413 {
378 if (n>AP) Dabr = (G4int) AP; 414 if (n>AP) Dabr = (G4int) AP;
379 else Dabr = (G4int) n; 415 else Dabr = (G4int) n;
380 break; 416 break;
381 } 417 }
382 } 418 }
383 } // End of while loop <<
384 <<
385 if ( loopCounter >= maxNumberOfLoops || skip <<
386 // Assume nuclei do not collide and return <<
387 theParticleChange.SetStatusChange(isAlive) <<
388 theParticleChange.SetEnergyChange(theTrack <<
389 theParticleChange.SetMomentumChange(theTra <<
390 if (verboseLevel >= 2) { <<
391 G4cout <<"Particle energy too low to ove <<
392 G4cout <<"Event rejected and original tr <<
393 G4cout <<"############################## <<
394 <<"############################## <<
395 <<G4endl; <<
396 } <<
397 delete theAbrasionGeometry; <<
398 return &theParticleChange; <<
399 } 419 }
400 <<
401 if (verboseLevel >= 2) 420 if (verboseLevel >= 2)
402 { 421 {
403 G4cout <<G4endl; 422 G4cout <<G4endl;
404 G4cout <<"Impact parameter = " <<r/ferm 423 G4cout <<"Impact parameter = " <<r/fermi <<" fm" <<G4endl;
405 G4cout <<"# Abraded nucleons = " <<Dabr < 424 G4cout <<"# Abraded nucleons = " <<Dabr <<G4endl;
406 } 425 }
407 // 426 //
408 // 427 //
409 // The number of abraded nucleons must be no g 428 // The number of abraded nucleons must be no greater than the number of
410 // nucleons in either the projectile or the ta 429 // nucleons in either the projectile or the target. If AP - Dabr < 2 or
411 // AT - Dabr < 2 then either we have only a nu 430 // AT - Dabr < 2 then either we have only a nucleon left behind in the
412 // projectile/target or we've tried to abrade 431 // projectile/target or we've tried to abrade too many nucleons - and Dabr
413 // should be limited. 432 // should be limited.
414 // 433 //
415 if (AP - (G4double) Dabr < 2.0) Dabr = (G4in 434 if (AP - (G4double) Dabr < 2.0) Dabr = (G4int) AP;
416 if (AT - (G4double) Dabr < 2.0) Dabr = (G4in 435 if (AT - (G4double) Dabr < 2.0) Dabr = (G4int) AT;
417 // 436 //
418 // 437 //
419 // Determine the abraded secondary nucleons fr 438 // Determine the abraded secondary nucleons from the projectile. *fragmentP
420 // is a pointer to the prefragment from the pr 439 // is a pointer to the prefragment from the projectile and nSecP is the number
421 // of nucleons in theParticleChange which have 440 // of nucleons in theParticleChange which have been abraded. The total energy
422 // from these is determined. 441 // from these is determined.
423 // 442 //
424 G4ThreeVector boost = pP.findBoostToCM(); 443 G4ThreeVector boost = pP.findBoostToCM();
425 G4Fragment *fragmentP = GetAbradedNucleons ( 444 G4Fragment *fragmentP = GetAbradedNucleons (Dabr, AP, ZP, rP);
426 G4int nSecP = (G4int)theParticleCh << 445 G4int nSecP = theParticleChange.GetNumberOfSecondaries();
427 G4int i = 0; 446 G4int i = 0;
428 for (i=0; i<nSecP; ++i) << 447 for (i=0; i<nSecP; i++)
429 { 448 {
430 TotalEPost += theParticleChange.GetSeconda 449 TotalEPost += theParticleChange.GetSecondary(i)->
431 GetParticle()->GetTotalEnergy(); 450 GetParticle()->GetTotalEnergy();
432 } 451 }
433 // 452 //
434 // 453 //
435 // Determine the number of spectators in the i 454 // Determine the number of spectators in the interaction region for the
436 // projectile. 455 // projectile.
437 // 456 //
438 G4int DspcP = (G4int) (AP*F) - Dabr; 457 G4int DspcP = (G4int) (AP*F) - Dabr;
439 if (DspcP <= 0) DspcP = 0; 458 if (DspcP <= 0) DspcP = 0;
440 else if (DspcP > AP-Dabr) DspcP = ((G4int) A 459 else if (DspcP > AP-Dabr) DspcP = ((G4int) AP) - Dabr;
441 // 460 //
442 // 461 //
443 // Determine excitation energy associated with 462 // Determine excitation energy associated with excess surface area of the
444 // projectile (EsP) and the excitation due to 463 // projectile (EsP) and the excitation due to scattering of nucleons which are
445 // retained within the projectile (ExP). Add 464 // retained within the projectile (ExP). Add the total energy from the excited
446 // nucleus to the total energy of the secondar 465 // nucleus to the total energy of the secondaries.
447 // 466 //
448 G4bool excitationAbsorbedByProjectile = fals 467 G4bool excitationAbsorbedByProjectile = false;
449 if (fragmentP != nullptr) << 468 if (fragmentP != NULL)
450 { 469 {
451 G4double EsP = theAbrasionGeometry->GetExc 470 G4double EsP = theAbrasionGeometry->GetExcitationEnergyOfProjectile();
452 G4double ExP = 0.0; 471 G4double ExP = 0.0;
453 if (Dabr < AT) 472 if (Dabr < AT)
454 excitationAbsorbedByProjectile = G4Unifo 473 excitationAbsorbedByProjectile = G4UniformRand() < 0.5;
455 if (excitationAbsorbedByProjectile) 474 if (excitationAbsorbedByProjectile)
456 ExP = GetNucleonInducedExcitation(rP, rT 475 ExP = GetNucleonInducedExcitation(rP, rT, r);
457 G4double xP = EsP + ExP; 476 G4double xP = EsP + ExP;
458 if (xP > B*(AP-Dabr)) xP = B*(AP-Dabr); 477 if (xP > B*(AP-Dabr)) xP = B*(AP-Dabr);
459 G4LorentzVector lorentzVector = fragmentP- 478 G4LorentzVector lorentzVector = fragmentP->GetMomentum();
460 lorentzVector.setE(lorentzVector.e()+xP); 479 lorentzVector.setE(lorentzVector.e()+xP);
461 fragmentP->SetMomentum(lorentzVector); 480 fragmentP->SetMomentum(lorentzVector);
462 TotalEPost += lorentzVector.e(); 481 TotalEPost += lorentzVector.e();
463 } 482 }
464 G4double EMassP = TotalEPost; 483 G4double EMassP = TotalEPost;
465 // 484 //
466 // 485 //
467 // Determine the abraded secondary nucleons fr 486 // Determine the abraded secondary nucleons from the target. Note that it's
468 // assumed that the same number of nucleons ar 487 // assumed that the same number of nucleons are abraded from the target as for
469 // the projectile, and obviously no boost is a 488 // the projectile, and obviously no boost is applied to the products. *fragmentT
470 // is a pointer to the prefragment from the ta 489 // is a pointer to the prefragment from the target and nSec is the total number
471 // of nucleons in theParticleChange which have 490 // of nucleons in theParticleChange which have been abraded. The total energy
472 // from these is determined. 491 // from these is determined.
473 // 492 //
474 G4Fragment *fragmentT = GetAbradedNucleons ( 493 G4Fragment *fragmentT = GetAbradedNucleons (Dabr, AT, ZT, rT);
475 G4int nSec = (G4int)theParticleChange.GetNum << 494 G4int nSec = theParticleChange.GetNumberOfSecondaries();
476 for (i=nSecP; i<nSec; ++i) << 495 for (i=nSecP; i<nSec; i++)
477 { 496 {
478 TotalEPost += theParticleChange.GetSeconda 497 TotalEPost += theParticleChange.GetSecondary(i)->
479 GetParticle()->GetTotalEnergy(); 498 GetParticle()->GetTotalEnergy();
480 } 499 }
481 // 500 //
482 // 501 //
483 // Determine the number of spectators in the i 502 // Determine the number of spectators in the interaction region for the
484 // target. 503 // target.
485 // 504 //
486 G4int DspcT = (G4int) (AT*F) - Dabr; 505 G4int DspcT = (G4int) (AT*F) - Dabr;
487 if (DspcT <= 0) DspcT = 0; 506 if (DspcT <= 0) DspcT = 0;
488 else if (DspcT > AP-Dabr) DspcT = ((G4int) A 507 else if (DspcT > AP-Dabr) DspcT = ((G4int) AT) - Dabr;
489 // 508 //
490 // 509 //
491 // Determine excitation energy associated with 510 // Determine excitation energy associated with excess surface area of the
492 // target (EsT) and the excitation due to scat 511 // target (EsT) and the excitation due to scattering of nucleons which are
493 // retained within the target (ExT). Add the 512 // retained within the target (ExT). Add the total energy from the excited
494 // nucleus to the total energy of the secondar 513 // nucleus to the total energy of the secondaries.
495 // 514 //
496 if (fragmentT != nullptr) << 515 if (fragmentT != NULL)
497 { 516 {
498 G4double EsT = theAbrasionGeometry->GetExc 517 G4double EsT = theAbrasionGeometry->GetExcitationEnergyOfTarget();
499 G4double ExT = 0.0; 518 G4double ExT = 0.0;
500 if (!excitationAbsorbedByProjectile) 519 if (!excitationAbsorbedByProjectile)
501 ExT = GetNucleonInducedExcitation(rT, rP 520 ExT = GetNucleonInducedExcitation(rT, rP, r);
502 G4double xT = EsT + ExT; 521 G4double xT = EsT + ExT;
503 if (xT > B*(AT-Dabr)) xT = B*(AT-Dabr); 522 if (xT > B*(AT-Dabr)) xT = B*(AT-Dabr);
504 G4LorentzVector lorentzVector = fragmentT- 523 G4LorentzVector lorentzVector = fragmentT->GetMomentum();
505 lorentzVector.setE(lorentzVector.e()+xT); 524 lorentzVector.setE(lorentzVector.e()+xT);
506 fragmentT->SetMomentum(lorentzVector); 525 fragmentT->SetMomentum(lorentzVector);
507 TotalEPost += lorentzVector.e(); 526 TotalEPost += lorentzVector.e();
508 } 527 }
509 // 528 //
510 // 529 //
511 // Now determine the difference between the pr 530 // Now determine the difference between the pre and post interaction
512 // energy - this will be used to determine the 531 // energy - this will be used to determine the Lorentz boost if conservation
513 // of energy is to be imposed/attempted. 532 // of energy is to be imposed/attempted.
514 // 533 //
515 G4double deltaE = TotalEPre - TotalEPost; 534 G4double deltaE = TotalEPre - TotalEPost;
516 if (deltaE > 0.0 && conserveEnergy) 535 if (deltaE > 0.0 && conserveEnergy)
517 { 536 {
518 G4double beta = std::sqrt(1.0 - EMassP*EMa << 537 G4double beta = std::sqrt(1.0 - EMassP*EMassP/std::pow(deltaE+EMassP,2.0));
519 boost = boost / boost.mag() * beta; 538 boost = boost / boost.mag() * beta;
520 } 539 }
521 // 540 //
522 // 541 //
523 // Now boost the secondaries from the projecti 542 // Now boost the secondaries from the projectile.
524 // 543 //
525 G4ThreeVector pBalance = pP.vect(); 544 G4ThreeVector pBalance = pP.vect();
526 for (i=0; i<nSecP; ++i) << 545 for (i=0; i<nSecP; i++)
527 { 546 {
528 G4DynamicParticle *dynamicP = theParticleC 547 G4DynamicParticle *dynamicP = theParticleChange.GetSecondary(i)->
529 GetParticle(); 548 GetParticle();
530 G4LorentzVector lorentzVector = dynamicP-> 549 G4LorentzVector lorentzVector = dynamicP->Get4Momentum();
531 lorentzVector.boost(-boost); 550 lorentzVector.boost(-boost);
532 dynamicP->Set4Momentum(lorentzVector); 551 dynamicP->Set4Momentum(lorentzVector);
533 pBalance -= lorentzVector.vect(); 552 pBalance -= lorentzVector.vect();
534 } 553 }
535 // 554 //
536 // 555 //
537 // Set the boost for the projectile prefragmen 556 // Set the boost for the projectile prefragment. This is now based on the
538 // conservation of momentum. However, if the 557 // conservation of momentum. However, if the user selected momentum of the
539 // prefragment is not to be conserved this sim 558 // prefragment is not to be conserved this simply boosted to the velocity of the
540 // original projectile times the ratio of the 559 // original projectile times the ratio of the unexcited to the excited mass
541 // of the prefragment (the excitation increase 560 // of the prefragment (the excitation increases the effective mass of the
542 // prefragment, and therefore modifying the bo 561 // prefragment, and therefore modifying the boost is an attempt to prevent
543 // the momentum of the prefragment being exces 562 // the momentum of the prefragment being excessive).
544 // 563 //
545 if (fragmentP != nullptr) << 564 if (fragmentP != NULL)
546 { 565 {
547 G4LorentzVector lorentzVector = fragmentP- 566 G4LorentzVector lorentzVector = fragmentP->GetMomentum();
548 G4double fragmentM = lorentzVec << 567 G4double m = lorentzVector.m();
549 if (conserveMomentum) 568 if (conserveMomentum)
550 fragmentP->SetMomentum 569 fragmentP->SetMomentum
551 (G4LorentzVector(pBalance,std::sqrt(pB << 570 (G4LorentzVector(pBalance,std::sqrt(pBalance.mag2()+m*m+1.0*eV*eV)));
552 else 571 else
553 { 572 {
554 G4double fragmentGroundStateM = fragment << 573 G4double mg = fragmentP->GetGroundStateMass();
555 fragmentP->SetMomentum(lorentzVector.boo << 574 fragmentP->SetMomentum(lorentzVector.boost(-boost * mg/m));
556 } 575 }
557 } 576 }
558 // 577 //
559 // 578 //
560 // Output information to user if verbose infor 579 // Output information to user if verbose information requested.
561 // 580 //
562 if (verboseLevel >= 2) 581 if (verboseLevel >= 2)
563 { 582 {
564 G4cout <<G4endl; 583 G4cout <<G4endl;
565 G4cout <<"-------------------------------- 584 G4cout <<"-----------------------------------" <<G4endl;
566 G4cout <<"Secondary nucleons from projecti 585 G4cout <<"Secondary nucleons from projectile:" <<G4endl;
567 G4cout <<"-------------------------------- 586 G4cout <<"-----------------------------------" <<G4endl;
568 G4cout.precision(7); 587 G4cout.precision(7);
569 for (i=0; i<nSecP; ++i) << 588 for (i=0; i<nSecP; i++)
570 { 589 {
571 G4cout <<"Particle # " <<i <<G4endl; 590 G4cout <<"Particle # " <<i <<G4endl;
572 theParticleChange.GetSecondary(i)->GetPa 591 theParticleChange.GetSecondary(i)->GetParticle()->DumpInfo();
573 G4DynamicParticle *dyn = theParticleChan 592 G4DynamicParticle *dyn = theParticleChange.GetSecondary(i)->GetParticle();
574 G4cout <<"New nucleon (P) " <<dyn->GetDe 593 G4cout <<"New nucleon (P) " <<dyn->GetDefinition()->GetParticleName()
575 <<" : " <<dyn->Get4M 594 <<" : " <<dyn->Get4Momentum()
576 <<G4endl; 595 <<G4endl;
577 } 596 }
578 G4cout <<"---------------------------" <<G 597 G4cout <<"---------------------------" <<G4endl;
579 G4cout <<"The projectile prefragment:" <<G 598 G4cout <<"The projectile prefragment:" <<G4endl;
580 G4cout <<"---------------------------" <<G 599 G4cout <<"---------------------------" <<G4endl;
581 if (fragmentP != nullptr) << 600 if (fragmentP != NULL)
582 G4cout <<*fragmentP <<G4endl; 601 G4cout <<*fragmentP <<G4endl;
583 else 602 else
584 G4cout <<"(No residual prefragment)" <<G 603 G4cout <<"(No residual prefragment)" <<G4endl;
585 G4cout <<G4endl; 604 G4cout <<G4endl;
586 G4cout <<"-------------------------------" 605 G4cout <<"-------------------------------" <<G4endl;
587 G4cout <<"Secondary nucleons from target:" 606 G4cout <<"Secondary nucleons from target:" <<G4endl;
588 G4cout <<"-------------------------------" 607 G4cout <<"-------------------------------" <<G4endl;
589 G4cout.precision(7); 608 G4cout.precision(7);
590 for (i=nSecP; i<nSec; ++i) << 609 for (i=nSecP; i<nSec; i++)
591 { 610 {
592 G4cout <<"Particle # " <<i <<G4endl; 611 G4cout <<"Particle # " <<i <<G4endl;
593 theParticleChange.GetSecondary(i)->GetPa 612 theParticleChange.GetSecondary(i)->GetParticle()->DumpInfo();
594 G4DynamicParticle *dyn = theParticleChan 613 G4DynamicParticle *dyn = theParticleChange.GetSecondary(i)->GetParticle();
595 G4cout <<"New nucleon (T) " <<dyn->GetDe 614 G4cout <<"New nucleon (T) " <<dyn->GetDefinition()->GetParticleName()
596 <<" : " <<dyn->Get4M 615 <<" : " <<dyn->Get4Momentum()
597 <<G4endl; 616 <<G4endl;
598 } 617 }
599 G4cout <<"-----------------------" <<G4end 618 G4cout <<"-----------------------" <<G4endl;
600 G4cout <<"The target prefragment:" <<G4end 619 G4cout <<"The target prefragment:" <<G4endl;
601 G4cout <<"-----------------------" <<G4end 620 G4cout <<"-----------------------" <<G4endl;
602 if (fragmentT != nullptr) << 621 if (fragmentT != NULL)
603 G4cout <<*fragmentT <<G4endl; 622 G4cout <<*fragmentT <<G4endl;
604 else 623 else
605 G4cout <<"(No residual prefragment)" <<G 624 G4cout <<"(No residual prefragment)" <<G4endl;
606 } 625 }
607 // 626 //
608 // 627 //
609 // Now we can decay the nuclear fragments if p 628 // Now we can decay the nuclear fragments if present. The secondaries are
610 // collected and boosted as well. This is per 629 // collected and boosted as well. This is performed first for the projectile...
611 // 630 //
612 if (fragmentP !=nullptr) << 631 if (fragmentP !=NULL)
613 { 632 {
614 G4ReactionProductVector *products = nullpt << 633 G4ReactionProductVector *products = NULL;
615 // if (fragmentP->GetZ_asInt() != fragm << 634 if (fragmentP->GetZ() != fragmentP->GetA())
616 products = theExcitationHandler->BreakItUp << 635 products = theExcitationHandler->BreakItUp(*fragmentP);
617 // else << 636 else
618 // products = theExcitationHandlerx->Bre << 637 products = theExcitationHandlerx->BreakItUp(*fragmentP);
619 delete fragmentP; 638 delete fragmentP;
620 fragmentP = nullptr; << 639 fragmentP = NULL;
621 640
622 G4ReactionProductVector::iterator iter; 641 G4ReactionProductVector::iterator iter;
623 for (iter = products->begin(); iter != pro 642 for (iter = products->begin(); iter != products->end(); ++iter)
624 { 643 {
625 G4DynamicParticle *secondary = 644 G4DynamicParticle *secondary =
626 new G4DynamicParticle((*iter)->GetDefi 645 new G4DynamicParticle((*iter)->GetDefinition(),
627 (*iter)->GetTotalEnergy(), (*iter)->Ge 646 (*iter)->GetTotalEnergy(), (*iter)->GetMomentum());
628 theParticleChange.AddSecondary (secondar << 647 theParticleChange.AddSecondary (secondary); // Added MHM 20050118
629 G4String particleName = (*iter)->GetDefi 648 G4String particleName = (*iter)->GetDefinition()->GetParticleName();
630 delete (*iter); // get rid of leftover p << 649 delete (*iter); // get rid of leftover particle def! // Added MHM 20050118
631 if (verboseLevel >= 2 && particleName.fi 650 if (verboseLevel >= 2 && particleName.find("[",0) < particleName.size())
632 { 651 {
633 G4cout <<"------------------------" << 652 G4cout <<"------------------------" <<G4endl;
634 G4cout <<"The projectile fragment:" << 653 G4cout <<"The projectile fragment:" <<G4endl;
635 G4cout <<"------------------------" << 654 G4cout <<"------------------------" <<G4endl;
636 G4cout <<" fragmentP = " <<particleNam 655 G4cout <<" fragmentP = " <<particleName
637 <<" Energy = " <<secondary-> 656 <<" Energy = " <<secondary->GetKineticEnergy()
638 <<G4endl; 657 <<G4endl;
639 } 658 }
640 } 659 }
641 delete products; << 660 delete products; // Added MHM 20050118
642 } 661 }
643 // 662 //
644 // 663 //
645 // Now decay the target nucleus - no boost is 664 // Now decay the target nucleus - no boost is applied since in this
646 // approximation it is assumed that there is n 665 // approximation it is assumed that there is negligible momentum transfer from
647 // the projectile. 666 // the projectile.
648 // 667 //
649 if (fragmentT != nullptr) << 668 if (fragmentT != NULL)
650 { 669 {
651 G4ReactionProductVector *products = nullpt << 670 G4ReactionProductVector *products = NULL;
652 // if (fragmentT->GetZ_asInt() != fragm << 671 if (fragmentT->GetZ() != fragmentT->GetA())
653 products = theExcitationHandler->BreakIt 672 products = theExcitationHandler->BreakItUp(*fragmentT);
654 // else << 673 else
655 // products = theExcitationHandlerx->Bre << 674 products = theExcitationHandlerx->BreakItUp(*fragmentT);
656 // delete fragmentT; << 675 delete fragmentT;
657 fragmentT = nullptr; << 676 fragmentT = NULL;
658 677
659 G4ReactionProductVector::iterator iter; 678 G4ReactionProductVector::iterator iter;
660 for (iter = products->begin(); iter != pro 679 for (iter = products->begin(); iter != products->end(); ++iter)
661 { 680 {
662 G4DynamicParticle *secondary = 681 G4DynamicParticle *secondary =
663 new G4DynamicParticle((*iter)->GetDefi 682 new G4DynamicParticle((*iter)->GetDefinition(),
664 (*iter)->GetTotalEnergy(), (*iter)->Ge 683 (*iter)->GetTotalEnergy(), (*iter)->GetMomentum());
665 theParticleChange.AddSecondary (secondar << 684 theParticleChange.AddSecondary (secondary);
666 G4String particleName = (*iter)->GetDefi 685 G4String particleName = (*iter)->GetDefinition()->GetParticleName();
667 delete (*iter); // get rid of leftover p << 686 delete (*iter); // get rid of leftover particle def! // Added MHM 20050118
668 if (verboseLevel >= 2 && particleName.fi 687 if (verboseLevel >= 2 && particleName.find("[",0) < particleName.size())
669 { 688 {
670 G4cout <<"--------------------" <<G4en 689 G4cout <<"--------------------" <<G4endl;
671 G4cout <<"The target fragment:" <<G4en 690 G4cout <<"The target fragment:" <<G4endl;
672 G4cout <<"--------------------" <<G4en 691 G4cout <<"--------------------" <<G4endl;
673 G4cout <<" fragmentT = " <<particleNam 692 G4cout <<" fragmentT = " <<particleName
674 <<" Energy = " <<secondary-> 693 <<" Energy = " <<secondary->GetKineticEnergy()
675 <<G4endl; 694 <<G4endl;
676 } 695 }
677 } 696 }
678 delete products; << 697 delete products; // Added MHM 20050118
679 } 698 }
680 699
681 if (verboseLevel >= 2) 700 if (verboseLevel >= 2)
682 G4cout <<"############################### 701 G4cout <<"########################################"
683 <<"############################### 702 <<"########################################"
684 <<G4endl; 703 <<G4endl;
685 704
686 delete theAbrasionGeometry; 705 delete theAbrasionGeometry;
>> 706
687 return &theParticleChange; 707 return &theParticleChange;
688 } 708 }
689 ////////////////////////////////////////////// 709 ////////////////////////////////////////////////////////////////////////////////
690 // 710 //
691 G4Fragment *G4WilsonAbrasionModel::GetAbradedN 711 G4Fragment *G4WilsonAbrasionModel::GetAbradedNucleons (G4int Dabr, G4double A,
692 G4double Z, G4double r) 712 G4double Z, G4double r)
693 { 713 {
694 // 714 //
695 // 715 //
696 // Initialise variables. tau is the Fermi rad 716 // Initialise variables. tau is the Fermi radius of the nucleus. The variables
697 // p..., C... and gamma are used to help sampl << 717 // p..., C... and g(amma) are used to help sample the secondary nucleon
698 // spectrum. 718 // spectrum.
699 // 719 //
700 720
701 G4double pK = hbarc * G4Pow::GetInstance() << 721 G4double pK = hbarc * std::pow(9.0 * pi / 4.0 * A, third) / (1.29 * r);
702 if (A <= 24.0) pK *= -0.229*G4Pow::GetInstan << 722 if (A <= 24.0) pK *= -0.229*std::pow(A,third) + 1.62;
703 G4double pKsq = pK * pK; 723 G4double pKsq = pK * pK;
704 G4double p1sq = 2.0/5.0 * pKsq; 724 G4double p1sq = 2.0/5.0 * pKsq;
705 G4double p2sq = 6.0/5.0 * pKsq; 725 G4double p2sq = 6.0/5.0 * pKsq;
706 G4double p3sq = 500.0 * 500.0; 726 G4double p3sq = 500.0 * 500.0;
707 G4double C1 = 1.0; 727 G4double C1 = 1.0;
708 G4double C2 = 0.03; 728 G4double C2 = 0.03;
709 G4double C3 = 0.0002; 729 G4double C3 = 0.0002;
710 G4double gamma = 90.0 * MeV; << 730 G4double g = 90.0 * MeV;
711 G4double maxn = C1 + C2 + C3; 731 G4double maxn = C1 + C2 + C3;
712 // 732 //
713 // 733 //
714 // initialise the number of secondary nucleons 734 // initialise the number of secondary nucleons abraded to zero, and initially set
715 // the type of nucleon abraded to proton ... j 735 // the type of nucleon abraded to proton ... just for now.
716 // 736 //
717 G4double Aabr = 0.0; 737 G4double Aabr = 0.0;
718 G4double Zabr = 0.0; 738 G4double Zabr = 0.0;
719 G4ParticleDefinition *typeNucleon = G4Proton 739 G4ParticleDefinition *typeNucleon = G4Proton::ProtonDefinition();
720 G4DynamicParticle *dynamicNucleon = nullptr; << 740 G4DynamicParticle *dynamicNucleon = NULL;
721 G4ParticleMomentum pabr(0.0, 0.0, 0.0); 741 G4ParticleMomentum pabr(0.0, 0.0, 0.0);
722 // 742 //
723 // 743 //
724 // Now go through each abraded nucleon and sam 744 // Now go through each abraded nucleon and sample type, spectrum and angle.
725 // 745 //
726 G4bool isForLoopExitAnticipated = false; << 746 for (G4int i=0; i<Dabr; i++)
727 for (G4int i=0; i<Dabr; ++i) <<
728 { 747 {
729 // 748 //
730 // 749 //
731 // Sample the nucleon momentum distribution by 750 // Sample the nucleon momentum distribution by simple rejection techniques. We
732 // reject values of p == 0.0 since this causes 751 // reject values of p == 0.0 since this causes bad behaviour in the sinh term.
733 // 752 //
734 G4double p = 0.0; 753 G4double p = 0.0;
735 G4bool found = false; 754 G4bool found = false;
736 const G4int maxNumberOfLoops = 100000; << 755 while (!found)
737 G4int loopCounter = -1; <<
738 while (!found && ++loopCounter < maxNumber <<
739 { 756 {
740 while (p <= 0.0) p = npK * pK * G4Unifor << 757 while (p <= 0.0) p = npK * pK * G4UniformRand();
741 G4double psq = p * p; 758 G4double psq = p * p;
742 found = maxn * G4UniformRand() < C1*G4Ex << 759 found = maxn * G4UniformRand() < C1*std::exp(-psq/p1sq/2.0) +
743 C2*G4Exp(-psq/p2sq/2.0) + C3*G4Exp(-ps << 760 C2*std::exp(-psq/p2sq/2.0) + C3*std::exp(-psq/p3sq/2.0) + p/g/std::sinh(p/g);
744 } <<
745 if ( loopCounter >= maxNumberOfLoops ) <<
746 { <<
747 isForLoopExitAnticipated = true; <<
748 break; <<
749 } 761 }
750 // 762 //
751 // 763 //
752 // Determine the type of particle abraded. Ca 764 // Determine the type of particle abraded. Can only be proton or neutron,
753 // and the probability is determine to be prop 765 // and the probability is determine to be proportional to the ratio as found
754 // in the nucleus at each stage. 766 // in the nucleus at each stage.
755 // 767 //
756 G4double prob = (Z-Zabr)/(A-Aabr); 768 G4double prob = (Z-Zabr)/(A-Aabr);
757 if (G4UniformRand()<prob) 769 if (G4UniformRand()<prob)
758 { 770 {
759 Zabr++; 771 Zabr++;
760 typeNucleon = G4Proton::ProtonDefinition 772 typeNucleon = G4Proton::ProtonDefinition();
761 } 773 }
762 else 774 else
763 typeNucleon = G4Neutron::NeutronDefiniti 775 typeNucleon = G4Neutron::NeutronDefinition();
764 Aabr++; 776 Aabr++;
765 // 777 //
766 // 778 //
767 // The angular distribution of the secondary n 779 // The angular distribution of the secondary nucleons is approximated to an
768 // isotropic distribution in the rest frame of 780 // isotropic distribution in the rest frame of the nucleus (this will be Lorentz
769 // boosted later. 781 // boosted later.
770 // 782 //
771 G4double costheta = 2.*G4UniformRand()-1.0 783 G4double costheta = 2.*G4UniformRand()-1.0;
772 G4double sintheta = std::sqrt((1.0 - costh 784 G4double sintheta = std::sqrt((1.0 - costheta)*(1.0 + costheta));
773 G4double phi = 2.0*pi*G4UniformRand() 785 G4double phi = 2.0*pi*G4UniformRand()*rad;
774 G4ThreeVector direction(sintheta*std::cos( 786 G4ThreeVector direction(sintheta*std::cos(phi),sintheta*std::sin(phi),costheta);
775 G4double nucleonMass = typeNucleon->GetPDG 787 G4double nucleonMass = typeNucleon->GetPDGMass();
776 G4double E = std::sqrt(p*p + nuc 788 G4double E = std::sqrt(p*p + nucleonMass*nucleonMass)-nucleonMass;
777 dynamicNucleon = new G4DynamicParticle(typ 789 dynamicNucleon = new G4DynamicParticle(typeNucleon,direction,E);
778 theParticleChange.AddSecondary (dynamicNuc << 790 theParticleChange.AddSecondary (dynamicNucleon);
779 pabr += p*direction; 791 pabr += p*direction;
780 } 792 }
781 // 793 //
782 // 794 //
783 // Next determine the details of the nuclear p 795 // Next determine the details of the nuclear prefragment .. that is if there
784 // is one or more protons in the residue. (No 796 // is one or more protons in the residue. (Note that the 1 eV in the total
785 // energy is a safety factor to avoid any poss 797 // energy is a safety factor to avoid any possibility of negative rest mass
786 // energy.) 798 // energy.)
787 // 799 //
788 G4Fragment *fragment = nullptr; << 800 G4Fragment *fragment = NULL;
789 if ( ! isForLoopExitAnticipated && Z-Zabr>=1 << 801 if (Z-Zabr>=1.0)
790 { 802 {
791 G4double ionMass = G4ParticleTable::GetPar 803 G4double ionMass = G4ParticleTable::GetParticleTable()->GetIonTable()->
792 GetIonMass(G4lrint(Z-Za 804 GetIonMass(G4lrint(Z-Zabr),G4lrint(A-Aabr));
793 G4double E = std::sqrt(pabr.mag2() + 805 G4double E = std::sqrt(pabr.mag2() + ionMass*ionMass);
794 G4LorentzVector lorentzVector = G4LorentzV 806 G4LorentzVector lorentzVector = G4LorentzVector(-pabr, E + 1.0*eV);
795 fragment = 807 fragment =
796 new G4Fragment((G4int) (A-Aabr), (G4int) 808 new G4Fragment((G4int) (A-Aabr), (G4int) (Z-Zabr), lorentzVector);
797 } 809 }
798 810
799 return fragment; 811 return fragment;
800 } 812 }
801 ////////////////////////////////////////////// 813 ////////////////////////////////////////////////////////////////////////////////
802 // 814 //
803 G4double G4WilsonAbrasionModel::GetNucleonIndu 815 G4double G4WilsonAbrasionModel::GetNucleonInducedExcitation
804 (G4double rP, G4double rT, G4double r) 816 (G4double rP, G4double rT, G4double r)
805 { 817 {
806 // 818 //
807 // 819 //
808 // Initialise variables. 820 // Initialise variables.
809 // 821 //
810 G4double Cl = 0.0; 822 G4double Cl = 0.0;
811 G4double rPsq = rP * rP; 823 G4double rPsq = rP * rP;
812 G4double rTsq = rT * rT; 824 G4double rTsq = rT * rT;
813 G4double rsq = r * r; 825 G4double rsq = r * r;
814 // 826 //
815 // 827 //
816 // Depending upon the impact parameter, a diff 828 // Depending upon the impact parameter, a different form of the chord length is
817 // is used. 829 // is used.
818 // 830 //
819 if (r > rT) Cl = 2.0*std::sqrt(rPsq + 2.0*r* 831 if (r > rT) Cl = 2.0*std::sqrt(rPsq + 2.0*r*rT - rsq - rTsq);
820 else Cl = 2.0*rP; 832 else Cl = 2.0*rP;
821 // 833 //
822 // 834 //
823 // The next lines have been changed to include 835 // The next lines have been changed to include a "catch" to make sure if the
824 // projectile and target are too close, Ct is 836 // projectile and target are too close, Ct is set to twice rP or twice rT.
825 // Otherwise the standard Wilson algorithm sho 837 // Otherwise the standard Wilson algorithm should work fine.
826 // PRT 20091023. 838 // PRT 20091023.
827 // 839 //
828 G4double Ct = 0.0; 840 G4double Ct = 0.0;
829 if (rT > rP && rsq < rTsq - rPsq) Ct = 841 if (rT > rP && rsq < rTsq - rPsq) Ct = 2.0 * rP;
830 else if (rP > rT && rsq < rPsq - rTsq) Ct = 842 else if (rP > rT && rsq < rPsq - rTsq) Ct = 2.0 * rT;
831 else { 843 else {
832 G4double bP = (rPsq+rsq-rTsq)/2.0/r; 844 G4double bP = (rPsq+rsq-rTsq)/2.0/r;
833 G4double x = rPsq - bP*bP; 845 G4double x = rPsq - bP*bP;
834 if (x < 0.0) { 846 if (x < 0.0) {
835 G4cerr <<"############################## 847 G4cerr <<"########################################"
836 <<"############################## 848 <<"########################################"
837 <<G4endl; 849 <<G4endl;
838 G4cerr <<"ERROR IN G4WilsonAbrasionModel 850 G4cerr <<"ERROR IN G4WilsonAbrasionModel::GetNucleonInducedExcitation"
839 <<G4endl; 851 <<G4endl;
840 G4cerr <<"rPsq - bP*bP < 0.0 and cannot 852 G4cerr <<"rPsq - bP*bP < 0.0 and cannot be square-rooted" <<G4endl;
841 G4cerr <<"Set to zero instead" <<G4endl; 853 G4cerr <<"Set to zero instead" <<G4endl;
842 G4cerr <<"############################## 854 G4cerr <<"########################################"
843 <<"############################## 855 <<"########################################"
844 <<G4endl; 856 <<G4endl;
845 } 857 }
846 Ct = 2.0*std::sqrt(x); 858 Ct = 2.0*std::sqrt(x);
847 } 859 }
848 860
849 G4double Ex = 13.0 * Cl / fermi; 861 G4double Ex = 13.0 * Cl / fermi;
850 if (Ct > 1.5*fermi) 862 if (Ct > 1.5*fermi)
851 Ex += 13.0 * Cl / fermi /3.0 * (Ct/fermi - 863 Ex += 13.0 * Cl / fermi /3.0 * (Ct/fermi - 1.5);
852 864
853 return Ex; 865 return Ex;
854 } 866 }
855 ////////////////////////////////////////////// 867 ////////////////////////////////////////////////////////////////////////////////
856 // 868 //
857 void G4WilsonAbrasionModel::SetUseAblation (G4 869 void G4WilsonAbrasionModel::SetUseAblation (G4bool useAblation1)
858 { 870 {
859 if (useAblation != useAblation1) 871 if (useAblation != useAblation1)
860 { 872 {
861 useAblation = useAblation1; 873 useAblation = useAblation1;
>> 874 delete theExcitationHandler;
>> 875 delete theExcitationHandlerx;
>> 876 theExcitationHandler = new G4ExcitationHandler;
>> 877 theExcitationHandlerx = new G4ExcitationHandler;
862 if (useAblation) 878 if (useAblation)
863 { 879 {
864 theAblation = new G4WilsonAblationModel; 880 theAblation = new G4WilsonAblationModel;
865 theAblation->SetVerboseLevel(verboseLeve 881 theAblation->SetVerboseLevel(verboseLevel);
866 theExcitationHandler->SetEvaporation(the 882 theExcitationHandler->SetEvaporation(theAblation);
>> 883 theExcitationHandlerx->SetEvaporation(theAblation);
867 } 884 }
868 else 885 else
869 { 886 {
870 delete theExcitationHandler; << 887 theAblation = NULL;
871 theAblation = nullp << 888 G4Evaporation * theEvaporation = new G4Evaporation;
872 theExcitationHandler = new G4Excitation << 889 G4FermiBreakUp * theFermiBreakUp = new G4FermiBreakUp;
>> 890 G4StatMF * theMF = new G4StatMF;
>> 891 theExcitationHandler->SetEvaporation(theEvaporation);
>> 892 theExcitationHandler->SetFermiModel(theFermiBreakUp);
>> 893 theExcitationHandler->SetMultiFragmentation(theMF);
>> 894 theExcitationHandler->SetMaxAandZForFermiBreakUp(12, 6);
>> 895 theExcitationHandler->SetMinEForMultiFrag(5.0*MeV);
>> 896
>> 897 theEvaporation = new G4Evaporation;
>> 898 theFermiBreakUp = new G4FermiBreakUp;
>> 899 theExcitationHandlerx->SetEvaporation(theEvaporation);
>> 900 theExcitationHandlerx->SetFermiModel(theFermiBreakUp);
>> 901 theExcitationHandlerx->SetMaxAandZForFermiBreakUp(12, 6);
873 } 902 }
874 } 903 }
875 return; 904 return;
876 } 905 }
877 ////////////////////////////////////////////// 906 ////////////////////////////////////////////////////////////////////////////////
878 // 907 //
879 void G4WilsonAbrasionModel::PrintWelcomeMessag 908 void G4WilsonAbrasionModel::PrintWelcomeMessage ()
880 { 909 {
881 G4cout <<G4endl; 910 G4cout <<G4endl;
882 G4cout <<" ********************************* 911 G4cout <<" *****************************************************************"
883 <<G4endl; 912 <<G4endl;
884 G4cout <<" Nuclear abrasion model for nuclea 913 G4cout <<" Nuclear abrasion model for nuclear-nuclear interactions activated"
885 <<G4endl; 914 <<G4endl;
886 G4cout <<" (Written by QinetiQ Ltd for the E 915 G4cout <<" (Written by QinetiQ Ltd for the European Space Agency)"
887 <<G4endl; 916 <<G4endl;
888 G4cout <<" ********************************* 917 G4cout <<" *****************************************************************"
889 <<G4endl; 918 <<G4endl;
890 G4cout << G4endl; 919 G4cout << G4endl;
891 920
892 return; 921 return;
893 } 922 }
894 ////////////////////////////////////////////// 923 ////////////////////////////////////////////////////////////////////////////////
895 // 924 //
896 925