| Geant4 Cross Reference |
1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer 3 // * License and Disclaimer *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided 6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/ 8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. 9 // * include a list of copyright holders. *
10 // * 10 // * *
11 // * Neither the authors of this software syst 11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing fin 12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warran 13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assum 14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file 15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. *
17 // * 17 // * *
18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. *
20 // * 20 // * *
21 // * Parts of this code which have been devel 21 // * Parts of this code which have been developed by QinetiQ Ltd *
22 // * under contract to the European Space Agen 22 // * under contract to the European Space Agency (ESA) are the *
23 // * intellectual property of ESA. Rights to u 23 // * intellectual property of ESA. Rights to use, copy, modify and *
24 // * redistribute this software for general pu 24 // * redistribute this software for general public use are granted *
25 // * in compliance with any licensing, distrib 25 // * in compliance with any licensing, distribution and development *
26 // * policy adopted by the Geant4 Collaboratio 26 // * policy adopted by the Geant4 Collaboration. This code has been *
27 // * written by QinetiQ Ltd for the European S 27 // * written by QinetiQ Ltd for the European Space Agency, under ESA *
28 // * contract 17191/03/NL/LvH (Aurora Programm 28 // * contract 17191/03/NL/LvH (Aurora Programme). *
29 // * 29 // * *
30 // * By using, copying, modifying or distri 30 // * By using, copying, modifying or distributing the software (or *
31 // * any work based on the software) you ag 31 // * any work based on the software) you agree to acknowledge its *
32 // * use in resulting scientific publicati 32 // * use in resulting scientific publications, and indicate your *
33 // * acceptance of all terms of the Geant4 Sof 33 // * acceptance of all terms of the Geant4 Software license. *
34 // ******************************************* 34 // ********************************************************************
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
75 // algorithm not properly defined if either: 75 // algorithm 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 // 12 June 2012, A. Ribon, CERN, Switzerland
79 // Fixing trivial warning errors of shadowed v 79 // Fixing trivial warning errors of shadowed variables.
80 // 80 //
81 // 4 August 2015, A. Ribon, CERN, Switzerland 81 // 4 August 2015, A. Ribon, CERN, Switzerland
82 // Replacing std::exp and std::pow with the fa 82 // Replacing std::exp and std::pow with the faster versions G4Exp and G4Pow.
83 // 83 //
84 // 7 August 2015, A. Ribon, CERN, Switzerland 84 // 7 August 2015, A. Ribon, CERN, Switzerland
85 // Checking of 'while' loops. 85 // Checking of 'while' loops.
86 // 86 //
87 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 87 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
88 ////////////////////////////////////////////// 88 ///////////////////////////////////////////////////////////////////////////////
89 89
90 #include "G4WilsonAbrasionModel.hh" 90 #include "G4WilsonAbrasionModel.hh"
91 #include "G4WilsonRadius.hh" 91 #include "G4WilsonRadius.hh"
92 #include "G4NuclearAbrasionGeometry.hh" 92 #include "G4NuclearAbrasionGeometry.hh"
93 #include "G4WilsonAblationModel.hh" 93 #include "G4WilsonAblationModel.hh"
94 94
95 #include "G4PhysicalConstants.hh" 95 #include "G4PhysicalConstants.hh"
96 #include "G4SystemOfUnits.hh" 96 #include "G4SystemOfUnits.hh"
97 #include "G4ExcitationHandler.hh" 97 #include "G4ExcitationHandler.hh"
98 #include "G4Evaporation.hh" 98 #include "G4Evaporation.hh"
99 #include "G4ParticleDefinition.hh" 99 #include "G4ParticleDefinition.hh"
100 #include "G4DynamicParticle.hh" 100 #include "G4DynamicParticle.hh"
101 #include "Randomize.hh" 101 #include "Randomize.hh"
102 #include "G4Fragment.hh" 102 #include "G4Fragment.hh"
103 #include "G4ReactionProductVector.hh" 103 #include "G4ReactionProductVector.hh"
104 #include "G4LorentzVector.hh" 104 #include "G4LorentzVector.hh"
105 #include "G4ParticleMomentum.hh" 105 #include "G4ParticleMomentum.hh"
106 #include "G4Poisson.hh" 106 #include "G4Poisson.hh"
107 #include "G4ParticleTable.hh" 107 #include "G4ParticleTable.hh"
108 #include "G4IonTable.hh" 108 #include "G4IonTable.hh"
109 #include "globals.hh" 109 #include "globals.hh"
110 110
111 #include "G4Exp.hh" 111 #include "G4Exp.hh"
112 #include "G4Pow.hh" 112 #include "G4Pow.hh"
113 113
114 #include "G4PhysicsModelCatalog.hh" 114 #include "G4PhysicsModelCatalog.hh"
115 115
116 116
117 G4WilsonAbrasionModel::G4WilsonAbrasionModel(G 117 G4WilsonAbrasionModel::G4WilsonAbrasionModel(G4bool useAblation1)
118 : G4HadronicInteraction("G4WilsonAbrasion"), 118 : G4HadronicInteraction("G4WilsonAbrasion"), secID(-1)
119 { 119 {
120 // Send message to stdout to advise that the 120 // Send message to stdout to advise that the G4Abrasion model is being used.
121 PrintWelcomeMessage(); 121 PrintWelcomeMessage();
122 122
123 // Set the default verbose level to 0 - no o 123 // Set the default verbose level to 0 - no output.
124 verboseLevel = 0; 124 verboseLevel = 0;
125 useAblation = useAblation1; 125 useAblation = useAblation1;
126 theAblation = nullptr; 126 theAblation = nullptr;
127 127
128 // No de-excitation handler has been supplie 128 // No de-excitation handler has been supplied - define the default handler.
129 129
130 theExcitationHandler = new G4ExcitationHandl 130 theExcitationHandler = new G4ExcitationHandler();
131 if (useAblation) 131 if (useAblation)
132 { 132 {
133 theAblation = new G4WilsonAblationModel; 133 theAblation = new G4WilsonAblationModel;
134 theAblation->SetVerboseLevel(verboseLevel) 134 theAblation->SetVerboseLevel(verboseLevel);
135 theExcitationHandler->SetEvaporation(theAb 135 theExcitationHandler->SetEvaporation(theAblation, true);
136 } 136 }
137 137
138 // Set the minimum and maximum range for the 138 // Set the minimum and maximum range for the model (despite nomanclature,
139 // this is in energy per nucleon number). 139 // this is in energy per nucleon number).
140 140
141 SetMinEnergy(70.0*MeV); 141 SetMinEnergy(70.0*MeV);
142 SetMaxEnergy(10.1*GeV); 142 SetMaxEnergy(10.1*GeV);
143 isBlocked = false; 143 isBlocked = false;
144 144
145 // npK, when mutiplied by the nuclear Fermi 145 // npK, when mutiplied by the nuclear Fermi momentum, determines the range of
146 // momentum over which the secondary nucleon 146 // momentum over which the secondary nucleon momentum is sampled.
147 147
148 r0sq = 0.0; 148 r0sq = 0.0;
149 npK = 5.0; 149 npK = 5.0;
150 B = 10.0 * MeV; 150 B = 10.0 * MeV;
151 third = 1.0 / 3.0; 151 third = 1.0 / 3.0;
152 fradius = 0.99; 152 fradius = 0.99;
153 conserveEnergy = false; 153 conserveEnergy = false;
154 conserveMomentum = true; 154 conserveMomentum = true;
155 155
156 // Creator model ID for the secondaries crea 156 // Creator model ID for the secondaries created by this model
157 secID = G4PhysicsModelCatalog::GetModelID( " 157 secID = G4PhysicsModelCatalog::GetModelID( "model_" + GetModelName() );
158 } 158 }
159 159
160 void G4WilsonAbrasionModel::ModelDescription(s 160 void G4WilsonAbrasionModel::ModelDescription(std::ostream& outFile) const
161 { 161 {
162 outFile << "G4WilsonAbrasionModel is a macro 162 outFile << "G4WilsonAbrasionModel is a macroscopic treatment of\n"
163 << "nucleus-nucleus collisions using 163 << "nucleus-nucleus collisions using simple geometric arguments.\n"
164 << "The smaller projectile nucleus g 164 << "The smaller projectile nucleus gouges out a part of the larger\n"
165 << "target nucleus, leaving a residu 165 << "target nucleus, leaving a residual nucleus and a fireball\n"
166 << "region where the projectile and 166 << "region where the projectile and target intersect. The fireball"
167 << "is then treated as a highly exci 167 << "is then treated as a highly excited nuclear fragment. This\n"
168 << "model is based on the NUCFRG2 mo 168 << "model is based on the NUCFRG2 model and is valid for all\n"
169 << "projectile energies between 70 M 169 << "projectile energies between 70 MeV/n and 10.1 GeV/n. \n";
170 } 170 }
171 171
172 G4WilsonAbrasionModel::G4WilsonAbrasionModel(G 172 G4WilsonAbrasionModel::G4WilsonAbrasionModel(G4ExcitationHandler* aExcitationHandler) :
173 G4HadronicInteraction("G4WilsonAbrasion"), se 173 G4HadronicInteraction("G4WilsonAbrasion"), secID(-1)
174 { 174 {
175 // Send message to stdout to advise that the G 175 // Send message to stdout to advise that the G4Abrasion model is being used.
176 176
177 PrintWelcomeMessage(); 177 PrintWelcomeMessage();
178 178
179 // Set the default verbose level to 0 - no out 179 // Set the default verbose level to 0 - no output.
180 180
181 verboseLevel = 0; 181 verboseLevel = 0;
182 182
183 theAblation = nullptr; //A.R. 26-Jul-2012 183 theAblation = nullptr; //A.R. 26-Jul-2012 Coverity fix.
184 useAblation = false; //A.R. 14-Aug-2012 184 useAblation = false; //A.R. 14-Aug-2012 Coverity fix.
185 185
186 // 186 //
187 // The user is able to provide the excitation 187 // The user is able to provide the excitation handler as well as an argument
188 // which is provided in this instantiation is 188 // which is provided in this instantiation is used to determine
189 // whether the spectators of the interaction a 189 // whether the spectators of the interaction are free following the abrasion.
190 // 190 //
191 theExcitationHandler = aExcitationHandler; 191 theExcitationHandler = aExcitationHandler;
192 // 192 //
193 // 193 //
194 // Set the minimum and maximum range for the m 194 // Set the minimum and maximum range for the model (despite nomanclature, this
195 // is in energy per nucleon number). 195 // is in energy per nucleon number).
196 // 196 //
197 SetMinEnergy(70.0*MeV); 197 SetMinEnergy(70.0*MeV);
198 SetMaxEnergy(10.1*GeV); 198 SetMaxEnergy(10.1*GeV);
199 isBlocked = false; 199 isBlocked = false;
200 // 200 //
201 // 201 //
202 // npK, when mutiplied by the nuclear Fermi mo 202 // npK, when mutiplied by the nuclear Fermi momentum, determines the range of
203 // momentum over which the secondary nucleon m 203 // momentum over which the secondary nucleon momentum is sampled.
204 // 204 //
205 r0sq = 0.0; 205 r0sq = 0.0;
206 npK = 5.0; 206 npK = 5.0;
207 B = 10.0 * MeV; 207 B = 10.0 * MeV;
208 third = 1.0 / 3.0; 208 third = 1.0 / 3.0;
209 fradius = 0.99; 209 fradius = 0.99;
210 conserveEnergy = false; 210 conserveEnergy = false;
211 conserveMomentum = true; 211 conserveMomentum = true;
212 212
213 // Creator model ID for the secondaries crea 213 // Creator model ID for the secondaries created by this model
214 secID = G4PhysicsModelCatalog::GetModelID( " 214 secID = G4PhysicsModelCatalog::GetModelID( "model_" + GetModelName() );
215 } 215 }
216 ////////////////////////////////////////////// 216 ////////////////////////////////////////////////////////////////////////////////
217 // 217 //
218 G4WilsonAbrasionModel::~G4WilsonAbrasionModel( 218 G4WilsonAbrasionModel::~G4WilsonAbrasionModel()
219 { 219 {
220 delete theExcitationHandler; 220 delete theExcitationHandler;
221 } 221 }
222 ////////////////////////////////////////////// 222 ////////////////////////////////////////////////////////////////////////////////
223 // 223 //
224 G4HadFinalState *G4WilsonAbrasionModel::ApplyY 224 G4HadFinalState *G4WilsonAbrasionModel::ApplyYourself (
225 const G4HadProjectile &theTrack, G4Nucleus & 225 const G4HadProjectile &theTrack, G4Nucleus &theTarget)
226 { 226 {
227 // 227 //
228 // 228 //
229 // The secondaries will be returned in G4HadFi 229 // The secondaries will be returned in G4HadFinalState &theParticleChange -
230 // initialise this. The original track will a 230 // initialise this. The original track will always be discontinued and
231 // secondaries followed. 231 // secondaries followed.
232 // 232 //
233 theParticleChange.Clear(); 233 theParticleChange.Clear();
234 theParticleChange.SetStatusChange(stopAndKil 234 theParticleChange.SetStatusChange(stopAndKill);
235 // 235 //
236 // 236 //
237 // Get relevant information about the projecti 237 // Get relevant information about the projectile and target (A, Z, energy/nuc,
238 // momentum, etc). 238 // momentum, etc).
239 // 239 //
240 const G4ParticleDefinition *definitionP = th 240 const G4ParticleDefinition *definitionP = theTrack.GetDefinition();
241 const G4double AP = definitionP->GetBaryonN 241 const G4double AP = definitionP->GetBaryonNumber();
242 const G4double ZP = definitionP->GetPDGChar 242 const G4double ZP = definitionP->GetPDGCharge();
243 G4LorentzVector pP = theTrack.Get4Momentum() 243 G4LorentzVector pP = theTrack.Get4Momentum();
244 G4double E = theTrack.GetKineticEner 244 G4double E = theTrack.GetKineticEnergy()/AP;
245 G4double AT = theTarget.GetA_asInt(); 245 G4double AT = theTarget.GetA_asInt();
246 G4double ZT = theTarget.GetZ_asInt(); 246 G4double ZT = theTarget.GetZ_asInt();
247 G4double TotalEPre = theTrack.GetTotalEnergy 247 G4double TotalEPre = theTrack.GetTotalEnergy() +
248 theTarget.AtomicMass(AT, ZT) + theTarget.G 248 theTarget.AtomicMass(AT, ZT) + theTarget.GetEnergyDeposit();
249 G4double TotalEPost = 0.0; 249 G4double TotalEPost = 0.0;
250 // 250 //
251 // 251 //
252 // Determine the radii of the projectile and t 252 // Determine the radii of the projectile and target nuclei.
253 // 253 //
254 G4WilsonRadius aR; 254 G4WilsonRadius aR;
255 G4double rP = aR.GetWilsonRadius(AP); 255 G4double rP = aR.GetWilsonRadius(AP);
256 G4double rT = aR.GetWilsonRadius(AT); 256 G4double rT = aR.GetWilsonRadius(AT);
257 G4double rPsq = rP * rP; 257 G4double rPsq = rP * rP;
258 G4double rTsq = rT * rT; 258 G4double rTsq = rT * rT;
259 if (verboseLevel >= 2) 259 if (verboseLevel >= 2)
260 { 260 {
261 G4cout <<"################################ 261 G4cout <<"########################################"
262 <<"################################ 262 <<"########################################"
263 <<G4endl; 263 <<G4endl;
264 G4cout.precision(6); 264 G4cout.precision(6);
265 G4cout <<"IN G4WilsonAbrasionModel" <<G4en 265 G4cout <<"IN G4WilsonAbrasionModel" <<G4endl;
266 G4cout <<"Initial projectile A=" <<AP 266 G4cout <<"Initial projectile A=" <<AP
267 <<", Z=" <<ZP 267 <<", Z=" <<ZP
268 <<", radius = " <<rP/fermi <<" fm" 268 <<", radius = " <<rP/fermi <<" fm"
269 <<G4endl; 269 <<G4endl;
270 G4cout <<"Initial target A=" <<AT 270 G4cout <<"Initial target A=" <<AT
271 <<", Z=" <<ZT 271 <<", Z=" <<ZT
272 <<", radius = " <<rT/fermi <<" fm" 272 <<", radius = " <<rT/fermi <<" fm"
273 <<G4endl; 273 <<G4endl;
274 G4cout <<"Projectile momentum and Energy/n 274 G4cout <<"Projectile momentum and Energy/nuc = " <<pP <<" ," <<E <<G4endl;
275 } 275 }
276 // 276 //
277 // 277 //
278 // The following variables are used to determi 278 // The following variables are used to determine the impact parameter in the
279 // near-field (i.e. taking into consideration 279 // near-field (i.e. taking into consideration the electrostatic repulsion).
280 // 280 //
281 G4double rm = ZP * ZT * elm_coupling / (E 281 G4double rm = ZP * ZT * elm_coupling / (E * AP);
282 G4double r = 0.0; 282 G4double r = 0.0;
283 G4double rsq = 0.0; 283 G4double rsq = 0.0;
284 // 284 //
285 // 285 //
286 // Initialise some of the variables which wll 286 // Initialise some of the variables which wll be used to calculate the chord-
287 // length for nucleons in the projectile and t 287 // length for nucleons in the projectile and target, and hence calculate the
288 // number of abraded nucleons and the excitati 288 // number of abraded nucleons and the excitation energy.
289 // 289 //
290 G4NuclearAbrasionGeometry *theAbrasionGeomet 290 G4NuclearAbrasionGeometry *theAbrasionGeometry = nullptr;
291 G4double CT = 0.0; 291 G4double CT = 0.0;
292 G4double F = 0.0; 292 G4double F = 0.0;
293 G4int Dabr = 0; 293 G4int Dabr = 0;
294 // 294 //
295 // 295 //
296 // The following loop is performed until the n 296 // The following loop is performed until the number of nucleons which are
297 // abraded by the process is >1, i.e. an inter 297 // abraded by the process is >1, i.e. an interaction MUST occur.
298 // 298 //
299 G4bool skipInteraction = false; // It will 299 G4bool skipInteraction = false; // It will be set true if the two nuclei fail to collide
300 const G4int maxNumberOfLoops = 1000; 300 const G4int maxNumberOfLoops = 1000;
301 G4int loopCounter = -1; 301 G4int loopCounter = -1;
302 while (Dabr == 0 && ++loopCounter < maxNumbe 302 while (Dabr == 0 && ++loopCounter < maxNumberOfLoops) /* Loop checking, 07.08.2015, A.Ribon */
303 { 303 {
304 // 304 //
305 // 305 //
306 // Sample the impact parameter. For the momen 306 // Sample the impact parameter. For the moment, this class takes account of
307 // electrostatic effects on the impact paramet 307 // electrostatic effects on the impact parameter, but (like HZETRN AND NUCFRG2)
308 // does not make any correction for the effect 308 // does not make any correction for the effects of nuclear-nuclear repulsion.
309 // 309 //
310 G4double rPT = rP + rT; 310 G4double rPT = rP + rT;
311 G4double rPTsq = rPT * rPT; 311 G4double rPTsq = rPT * rPT;
312 // 312 //
313 // 313 //
314 // This is a "catch" to make sure we don't go 314 // 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 315 // energy is too low to overcome nuclear repulsion. PRT 20091023. If the
316 // value of rm < fradius * rPT then we're unli 316 // value of rm < fradius * rPT then we're unlikely to sample a small enough
317 // impact parameter (energy of incident partic 317 // impact parameter (energy of incident particle is too low).
318 // 318 //
319 if (rm >= fradius * rPT) { 319 if (rm >= fradius * rPT) {
320 skipInteraction = true; 320 skipInteraction = true;
321 } 321 }
322 // 322 //
323 // 323 //
324 // Now sample impact parameter until the crite 324 // Now sample impact parameter until the criterion is met that projectile
325 // and target overlap, but repulsion is taken 325 // and target overlap, but repulsion is taken into consideration.
326 // 326 //
327 G4int evtcnt = 0; 327 G4int evtcnt = 0;
328 r = 1.1 * rPT; 328 r = 1.1 * rPT;
329 while (r > rPT && ++evtcnt < 1000) /* Loo 329 while (r > rPT && ++evtcnt < 1000) /* Loop checking, 07.08.2015, A.Ribon */
330 { 330 {
331 G4double bsq = rPTsq * G4UniformRand(); 331 G4double bsq = rPTsq * G4UniformRand();
332 r = (rm + std::sqrt(rm*rm + 4 332 r = (rm + std::sqrt(rm*rm + 4.0*bsq)) / 2.0;
333 } 333 }
334 // 334 //
335 // 335 //
336 // We've tried to sample this 1000 times, but 336 // We've tried to sample this 1000 times, but failed.
337 // 337 //
338 if (evtcnt >= 1000) { 338 if (evtcnt >= 1000) {
339 skipInteraction = true; 339 skipInteraction = true;
340 } 340 }
341 341
342 rsq = r * r; 342 rsq = r * r;
343 // 343 //
344 // 344 //
345 // Now determine the chord-length through the 345 // Now determine the chord-length through the target nucleus.
346 // 346 //
347 if (rT > rP) 347 if (rT > rP)
348 { 348 {
349 G4double x = (rPsq + rsq - rTsq) / 2.0 / 349 G4double x = (rPsq + rsq - rTsq) / 2.0 / r;
350 if (x > 0.0) CT = 2.0 * std::sqrt(rTsq - 350 if (x > 0.0) CT = 2.0 * std::sqrt(rTsq - x*x);
351 else CT = 2.0 * std::sqrt(rTsq - 351 else CT = 2.0 * std::sqrt(rTsq - rsq);
352 } 352 }
353 else 353 else
354 { 354 {
355 G4double x = (rTsq + rsq - rPsq) / 2.0 / 355 G4double x = (rTsq + rsq - rPsq) / 2.0 / r;
356 if (x > 0.0) CT = 2.0 * std::sqrt(rTsq - 356 if (x > 0.0) CT = 2.0 * std::sqrt(rTsq - x*x);
357 else CT = 2.0 * rT; 357 else CT = 2.0 * rT;
358 } 358 }
359 // 359 //
360 // 360 //
361 // Determine the number of abraded nucleons. 361 // Determine the number of abraded nucleons. Note that the mean number of
362 // abraded nucleons is used to sample the Pois 362 // abraded nucleons is used to sample the Poisson distribution. The Poisson
363 // distribution is sampled only ten times with 363 // distribution is sampled only ten times with the current impact parameter,
364 // and if it fails after this to find a case f 364 // 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 365 // nucleons >1, the impact parameter is re-sampled.
366 // 366 //
367 delete theAbrasionGeometry; 367 delete theAbrasionGeometry;
368 theAbrasionGeometry = new G4NuclearAbrasio 368 theAbrasionGeometry = new G4NuclearAbrasionGeometry(AP,AT,r);
369 F = theAbrasionGeometry- 369 F = theAbrasionGeometry->F();
370 G4double lambda = 16.6*fermi / G4Pow:: 370 G4double lambda = 16.6*fermi / G4Pow::GetInstance()->powA(E/MeV,0.26);
371 G4double Mabr = F * AP * (1.0 - G4Ex 371 G4double Mabr = F * AP * (1.0 - G4Exp(-CT/lambda));
372 G4long n = 0; 372 G4long n = 0;
373 for (G4int i = 0; i<10; ++i) 373 for (G4int i = 0; i<10; ++i)
374 { 374 {
375 n = G4Poisson(Mabr); 375 n = G4Poisson(Mabr);
376 if (n > 0) 376 if (n > 0)
377 { 377 {
378 if (n>AP) Dabr = (G4int) AP; 378 if (n>AP) Dabr = (G4int) AP;
379 else Dabr = (G4int) n; 379 else Dabr = (G4int) n;
380 break; 380 break;
381 } 381 }
382 } 382 }
383 } // End of while loop 383 } // End of while loop
384 384
385 if ( loopCounter >= maxNumberOfLoops || skip 385 if ( loopCounter >= maxNumberOfLoops || skipInteraction ) {
386 // Assume nuclei do not collide and return 386 // Assume nuclei do not collide and return unchanged primary.
387 theParticleChange.SetStatusChange(isAlive) 387 theParticleChange.SetStatusChange(isAlive);
388 theParticleChange.SetEnergyChange(theTrack 388 theParticleChange.SetEnergyChange(theTrack.GetKineticEnergy());
389 theParticleChange.SetMomentumChange(theTra 389 theParticleChange.SetMomentumChange(theTrack.Get4Momentum().vect().unit());
390 if (verboseLevel >= 2) { 390 if (verboseLevel >= 2) {
391 G4cout <<"Particle energy too low to ove 391 G4cout <<"Particle energy too low to overcome repulsion." <<G4endl;
392 G4cout <<"Event rejected and original tr 392 G4cout <<"Event rejected and original track maintained" <<G4endl;
393 G4cout <<"############################## 393 G4cout <<"########################################"
394 <<"############################## 394 <<"########################################"
395 <<G4endl; 395 <<G4endl;
396 } 396 }
397 delete theAbrasionGeometry; 397 delete theAbrasionGeometry;
398 return &theParticleChange; 398 return &theParticleChange;
399 } 399 }
400 400
401 if (verboseLevel >= 2) 401 if (verboseLevel >= 2)
402 { 402 {
403 G4cout <<G4endl; 403 G4cout <<G4endl;
404 G4cout <<"Impact parameter = " <<r/ferm 404 G4cout <<"Impact parameter = " <<r/fermi <<" fm" <<G4endl;
405 G4cout <<"# Abraded nucleons = " <<Dabr < 405 G4cout <<"# Abraded nucleons = " <<Dabr <<G4endl;
406 } 406 }
407 // 407 //
408 // 408 //
409 // The number of abraded nucleons must be no g 409 // The number of abraded nucleons must be no greater than the number of
410 // nucleons in either the projectile or the ta 410 // nucleons in either the projectile or the target. If AP - Dabr < 2 or
411 // AT - Dabr < 2 then either we have only a nu 411 // AT - Dabr < 2 then either we have only a nucleon left behind in the
412 // projectile/target or we've tried to abrade 412 // projectile/target or we've tried to abrade too many nucleons - and Dabr
413 // should be limited. 413 // should be limited.
414 // 414 //
415 if (AP - (G4double) Dabr < 2.0) Dabr = (G4in 415 if (AP - (G4double) Dabr < 2.0) Dabr = (G4int) AP;
416 if (AT - (G4double) Dabr < 2.0) Dabr = (G4in 416 if (AT - (G4double) Dabr < 2.0) Dabr = (G4int) AT;
417 // 417 //
418 // 418 //
419 // Determine the abraded secondary nucleons fr 419 // Determine the abraded secondary nucleons from the projectile. *fragmentP
420 // is a pointer to the prefragment from the pr 420 // is a pointer to the prefragment from the projectile and nSecP is the number
421 // of nucleons in theParticleChange which have 421 // of nucleons in theParticleChange which have been abraded. The total energy
422 // from these is determined. 422 // from these is determined.
423 // 423 //
424 G4ThreeVector boost = pP.findBoostToCM(); 424 G4ThreeVector boost = pP.findBoostToCM();
425 G4Fragment *fragmentP = GetAbradedNucleons ( 425 G4Fragment *fragmentP = GetAbradedNucleons (Dabr, AP, ZP, rP);
426 G4int nSecP = (G4int)theParticleCh 426 G4int nSecP = (G4int)theParticleChange.GetNumberOfSecondaries();
427 G4int i = 0; 427 G4int i = 0;
428 for (i=0; i<nSecP; ++i) 428 for (i=0; i<nSecP; ++i)
429 { 429 {
430 TotalEPost += theParticleChange.GetSeconda 430 TotalEPost += theParticleChange.GetSecondary(i)->
431 GetParticle()->GetTotalEnergy(); 431 GetParticle()->GetTotalEnergy();
432 } 432 }
433 // 433 //
434 // 434 //
435 // Determine the number of spectators in the i 435 // Determine the number of spectators in the interaction region for the
436 // projectile. 436 // projectile.
437 // 437 //
438 G4int DspcP = (G4int) (AP*F) - Dabr; 438 G4int DspcP = (G4int) (AP*F) - Dabr;
439 if (DspcP <= 0) DspcP = 0; 439 if (DspcP <= 0) DspcP = 0;
440 else if (DspcP > AP-Dabr) DspcP = ((G4int) A 440 else if (DspcP > AP-Dabr) DspcP = ((G4int) AP) - Dabr;
441 // 441 //
442 // 442 //
443 // Determine excitation energy associated with 443 // Determine excitation energy associated with excess surface area of the
444 // projectile (EsP) and the excitation due to 444 // projectile (EsP) and the excitation due to scattering of nucleons which are
445 // retained within the projectile (ExP). Add 445 // retained within the projectile (ExP). Add the total energy from the excited
446 // nucleus to the total energy of the secondar 446 // nucleus to the total energy of the secondaries.
447 // 447 //
448 G4bool excitationAbsorbedByProjectile = fals 448 G4bool excitationAbsorbedByProjectile = false;
449 if (fragmentP != nullptr) 449 if (fragmentP != nullptr)
450 { 450 {
451 G4double EsP = theAbrasionGeometry->GetExc 451 G4double EsP = theAbrasionGeometry->GetExcitationEnergyOfProjectile();
452 G4double ExP = 0.0; 452 G4double ExP = 0.0;
453 if (Dabr < AT) 453 if (Dabr < AT)
454 excitationAbsorbedByProjectile = G4Unifo 454 excitationAbsorbedByProjectile = G4UniformRand() < 0.5;
455 if (excitationAbsorbedByProjectile) 455 if (excitationAbsorbedByProjectile)
456 ExP = GetNucleonInducedExcitation(rP, rT 456 ExP = GetNucleonInducedExcitation(rP, rT, r);
457 G4double xP = EsP + ExP; 457 G4double xP = EsP + ExP;
458 if (xP > B*(AP-Dabr)) xP = B*(AP-Dabr); 458 if (xP > B*(AP-Dabr)) xP = B*(AP-Dabr);
459 G4LorentzVector lorentzVector = fragmentP- 459 G4LorentzVector lorentzVector = fragmentP->GetMomentum();
460 lorentzVector.setE(lorentzVector.e()+xP); 460 lorentzVector.setE(lorentzVector.e()+xP);
461 fragmentP->SetMomentum(lorentzVector); 461 fragmentP->SetMomentum(lorentzVector);
462 TotalEPost += lorentzVector.e(); 462 TotalEPost += lorentzVector.e();
463 } 463 }
464 G4double EMassP = TotalEPost; 464 G4double EMassP = TotalEPost;
465 // 465 //
466 // 466 //
467 // Determine the abraded secondary nucleons fr 467 // Determine the abraded secondary nucleons from the target. Note that it's
468 // assumed that the same number of nucleons ar 468 // assumed that the same number of nucleons are abraded from the target as for
469 // the projectile, and obviously no boost is a 469 // the projectile, and obviously no boost is applied to the products. *fragmentT
470 // is a pointer to the prefragment from the ta 470 // is a pointer to the prefragment from the target and nSec is the total number
471 // of nucleons in theParticleChange which have 471 // of nucleons in theParticleChange which have been abraded. The total energy
472 // from these is determined. 472 // from these is determined.
473 // 473 //
474 G4Fragment *fragmentT = GetAbradedNucleons ( 474 G4Fragment *fragmentT = GetAbradedNucleons (Dabr, AT, ZT, rT);
475 G4int nSec = (G4int)theParticleChange.GetNum 475 G4int nSec = (G4int)theParticleChange.GetNumberOfSecondaries();
476 for (i=nSecP; i<nSec; ++i) 476 for (i=nSecP; i<nSec; ++i)
477 { 477 {
478 TotalEPost += theParticleChange.GetSeconda 478 TotalEPost += theParticleChange.GetSecondary(i)->
479 GetParticle()->GetTotalEnergy(); 479 GetParticle()->GetTotalEnergy();
480 } 480 }
481 // 481 //
482 // 482 //
483 // Determine the number of spectators in the i 483 // Determine the number of spectators in the interaction region for the
484 // target. 484 // target.
485 // 485 //
486 G4int DspcT = (G4int) (AT*F) - Dabr; 486 G4int DspcT = (G4int) (AT*F) - Dabr;
487 if (DspcT <= 0) DspcT = 0; 487 if (DspcT <= 0) DspcT = 0;
488 else if (DspcT > AP-Dabr) DspcT = ((G4int) A 488 else if (DspcT > AP-Dabr) DspcT = ((G4int) AT) - Dabr;
489 // 489 //
490 // 490 //
491 // Determine excitation energy associated with 491 // Determine excitation energy associated with excess surface area of the
492 // target (EsT) and the excitation due to scat 492 // target (EsT) and the excitation due to scattering of nucleons which are
493 // retained within the target (ExT). Add the 493 // retained within the target (ExT). Add the total energy from the excited
494 // nucleus to the total energy of the secondar 494 // nucleus to the total energy of the secondaries.
495 // 495 //
496 if (fragmentT != nullptr) 496 if (fragmentT != nullptr)
497 { 497 {
498 G4double EsT = theAbrasionGeometry->GetExc 498 G4double EsT = theAbrasionGeometry->GetExcitationEnergyOfTarget();
499 G4double ExT = 0.0; 499 G4double ExT = 0.0;
500 if (!excitationAbsorbedByProjectile) 500 if (!excitationAbsorbedByProjectile)
501 ExT = GetNucleonInducedExcitation(rT, rP 501 ExT = GetNucleonInducedExcitation(rT, rP, r);
502 G4double xT = EsT + ExT; 502 G4double xT = EsT + ExT;
503 if (xT > B*(AT-Dabr)) xT = B*(AT-Dabr); 503 if (xT > B*(AT-Dabr)) xT = B*(AT-Dabr);
504 G4LorentzVector lorentzVector = fragmentT- 504 G4LorentzVector lorentzVector = fragmentT->GetMomentum();
505 lorentzVector.setE(lorentzVector.e()+xT); 505 lorentzVector.setE(lorentzVector.e()+xT);
506 fragmentT->SetMomentum(lorentzVector); 506 fragmentT->SetMomentum(lorentzVector);
507 TotalEPost += lorentzVector.e(); 507 TotalEPost += lorentzVector.e();
508 } 508 }
509 // 509 //
510 // 510 //
511 // Now determine the difference between the pr 511 // Now determine the difference between the pre and post interaction
512 // energy - this will be used to determine the 512 // energy - this will be used to determine the Lorentz boost if conservation
513 // of energy is to be imposed/attempted. 513 // of energy is to be imposed/attempted.
514 // 514 //
515 G4double deltaE = TotalEPre - TotalEPost; 515 G4double deltaE = TotalEPre - TotalEPost;
516 if (deltaE > 0.0 && conserveEnergy) 516 if (deltaE > 0.0 && conserveEnergy)
517 { 517 {
518 G4double beta = std::sqrt(1.0 - EMassP*EMa 518 G4double beta = std::sqrt(1.0 - EMassP*EMassP/G4Pow::GetInstance()->powN(deltaE+EMassP,2));
519 boost = boost / boost.mag() * beta; 519 boost = boost / boost.mag() * beta;
520 } 520 }
521 // 521 //
522 // 522 //
523 // Now boost the secondaries from the projecti 523 // Now boost the secondaries from the projectile.
524 // 524 //
525 G4ThreeVector pBalance = pP.vect(); 525 G4ThreeVector pBalance = pP.vect();
526 for (i=0; i<nSecP; ++i) 526 for (i=0; i<nSecP; ++i)
527 { 527 {
528 G4DynamicParticle *dynamicP = theParticleC 528 G4DynamicParticle *dynamicP = theParticleChange.GetSecondary(i)->
529 GetParticle(); 529 GetParticle();
530 G4LorentzVector lorentzVector = dynamicP-> 530 G4LorentzVector lorentzVector = dynamicP->Get4Momentum();
531 lorentzVector.boost(-boost); 531 lorentzVector.boost(-boost);
532 dynamicP->Set4Momentum(lorentzVector); 532 dynamicP->Set4Momentum(lorentzVector);
533 pBalance -= lorentzVector.vect(); 533 pBalance -= lorentzVector.vect();
534 } 534 }
535 // 535 //
536 // 536 //
537 // Set the boost for the projectile prefragmen 537 // Set the boost for the projectile prefragment. This is now based on the
538 // conservation of momentum. However, if the 538 // conservation of momentum. However, if the user selected momentum of the
539 // prefragment is not to be conserved this sim 539 // prefragment is not to be conserved this simply boosted to the velocity of the
540 // original projectile times the ratio of the 540 // original projectile times the ratio of the unexcited to the excited mass
541 // of the prefragment (the excitation increase 541 // of the prefragment (the excitation increases the effective mass of the
542 // prefragment, and therefore modifying the bo 542 // prefragment, and therefore modifying the boost is an attempt to prevent
543 // the momentum of the prefragment being exces 543 // the momentum of the prefragment being excessive).
544 // 544 //
545 if (fragmentP != nullptr) 545 if (fragmentP != nullptr)
546 { 546 {
547 G4LorentzVector lorentzVector = fragmentP- 547 G4LorentzVector lorentzVector = fragmentP->GetMomentum();
548 G4double fragmentM = lorentzVec 548 G4double fragmentM = lorentzVector.m();
549 if (conserveMomentum) 549 if (conserveMomentum)
550 fragmentP->SetMomentum 550 fragmentP->SetMomentum
551 (G4LorentzVector(pBalance,std::sqrt(pB 551 (G4LorentzVector(pBalance,std::sqrt(pBalance.mag2()+fragmentM*fragmentM+1.0*eV*eV)));
552 else 552 else
553 { 553 {
554 G4double fragmentGroundStateM = fragment 554 G4double fragmentGroundStateM = fragmentP->GetGroundStateMass();
555 fragmentP->SetMomentum(lorentzVector.boo 555 fragmentP->SetMomentum(lorentzVector.boost(-boost * fragmentGroundStateM/fragmentM));
556 } 556 }
557 } 557 }
558 // 558 //
559 // 559 //
560 // Output information to user if verbose infor 560 // Output information to user if verbose information requested.
561 // 561 //
562 if (verboseLevel >= 2) 562 if (verboseLevel >= 2)
563 { 563 {
564 G4cout <<G4endl; 564 G4cout <<G4endl;
565 G4cout <<"-------------------------------- 565 G4cout <<"-----------------------------------" <<G4endl;
566 G4cout <<"Secondary nucleons from projecti 566 G4cout <<"Secondary nucleons from projectile:" <<G4endl;
567 G4cout <<"-------------------------------- 567 G4cout <<"-----------------------------------" <<G4endl;
568 G4cout.precision(7); 568 G4cout.precision(7);
569 for (i=0; i<nSecP; ++i) 569 for (i=0; i<nSecP; ++i)
570 { 570 {
571 G4cout <<"Particle # " <<i <<G4endl; 571 G4cout <<"Particle # " <<i <<G4endl;
572 theParticleChange.GetSecondary(i)->GetPa 572 theParticleChange.GetSecondary(i)->GetParticle()->DumpInfo();
573 G4DynamicParticle *dyn = theParticleChan 573 G4DynamicParticle *dyn = theParticleChange.GetSecondary(i)->GetParticle();
574 G4cout <<"New nucleon (P) " <<dyn->GetDe 574 G4cout <<"New nucleon (P) " <<dyn->GetDefinition()->GetParticleName()
575 <<" : " <<dyn->Get4M 575 <<" : " <<dyn->Get4Momentum()
576 <<G4endl; 576 <<G4endl;
577 } 577 }
578 G4cout <<"---------------------------" <<G 578 G4cout <<"---------------------------" <<G4endl;
579 G4cout <<"The projectile prefragment:" <<G 579 G4cout <<"The projectile prefragment:" <<G4endl;
580 G4cout <<"---------------------------" <<G 580 G4cout <<"---------------------------" <<G4endl;
581 if (fragmentP != nullptr) 581 if (fragmentP != nullptr)
582 G4cout <<*fragmentP <<G4endl; 582 G4cout <<*fragmentP <<G4endl;
583 else 583 else
584 G4cout <<"(No residual prefragment)" <<G 584 G4cout <<"(No residual prefragment)" <<G4endl;
585 G4cout <<G4endl; 585 G4cout <<G4endl;
586 G4cout <<"-------------------------------" 586 G4cout <<"-------------------------------" <<G4endl;
587 G4cout <<"Secondary nucleons from target:" 587 G4cout <<"Secondary nucleons from target:" <<G4endl;
588 G4cout <<"-------------------------------" 588 G4cout <<"-------------------------------" <<G4endl;
589 G4cout.precision(7); 589 G4cout.precision(7);
590 for (i=nSecP; i<nSec; ++i) 590 for (i=nSecP; i<nSec; ++i)
591 { 591 {
592 G4cout <<"Particle # " <<i <<G4endl; 592 G4cout <<"Particle # " <<i <<G4endl;
593 theParticleChange.GetSecondary(i)->GetPa 593 theParticleChange.GetSecondary(i)->GetParticle()->DumpInfo();
594 G4DynamicParticle *dyn = theParticleChan 594 G4DynamicParticle *dyn = theParticleChange.GetSecondary(i)->GetParticle();
595 G4cout <<"New nucleon (T) " <<dyn->GetDe 595 G4cout <<"New nucleon (T) " <<dyn->GetDefinition()->GetParticleName()
596 <<" : " <<dyn->Get4M 596 <<" : " <<dyn->Get4Momentum()
597 <<G4endl; 597 <<G4endl;
598 } 598 }
599 G4cout <<"-----------------------" <<G4end 599 G4cout <<"-----------------------" <<G4endl;
600 G4cout <<"The target prefragment:" <<G4end 600 G4cout <<"The target prefragment:" <<G4endl;
601 G4cout <<"-----------------------" <<G4end 601 G4cout <<"-----------------------" <<G4endl;
602 if (fragmentT != nullptr) 602 if (fragmentT != nullptr)
603 G4cout <<*fragmentT <<G4endl; 603 G4cout <<*fragmentT <<G4endl;
604 else 604 else
605 G4cout <<"(No residual prefragment)" <<G 605 G4cout <<"(No residual prefragment)" <<G4endl;
606 } 606 }
607 // 607 //
608 // 608 //
609 // Now we can decay the nuclear fragments if p 609 // Now we can decay the nuclear fragments if present. The secondaries are
610 // collected and boosted as well. This is per 610 // collected and boosted as well. This is performed first for the projectile...
611 // 611 //
612 if (fragmentP !=nullptr) 612 if (fragmentP !=nullptr)
613 { 613 {
614 G4ReactionProductVector *products = nullpt 614 G4ReactionProductVector *products = nullptr;
615 // if (fragmentP->GetZ_asInt() != fragm 615 // if (fragmentP->GetZ_asInt() != fragmentP->GetA_asInt())
616 products = theExcitationHandler->BreakItUp 616 products = theExcitationHandler->BreakItUp(*fragmentP);
617 // else 617 // else
618 // products = theExcitationHandlerx->Bre 618 // products = theExcitationHandlerx->BreakItUp(*fragmentP);
619 delete fragmentP; 619 delete fragmentP;
620 fragmentP = nullptr; 620 fragmentP = nullptr;
621 621
622 G4ReactionProductVector::iterator iter; 622 G4ReactionProductVector::iterator iter;
623 for (iter = products->begin(); iter != pro 623 for (iter = products->begin(); iter != products->end(); ++iter)
624 { 624 {
625 G4DynamicParticle *secondary = 625 G4DynamicParticle *secondary =
626 new G4DynamicParticle((*iter)->GetDefi 626 new G4DynamicParticle((*iter)->GetDefinition(),
627 (*iter)->GetTotalEnergy(), (*iter)->Ge 627 (*iter)->GetTotalEnergy(), (*iter)->GetMomentum());
628 theParticleChange.AddSecondary (secondar 628 theParticleChange.AddSecondary (secondary, secID);
629 G4String particleName = (*iter)->GetDefi 629 G4String particleName = (*iter)->GetDefinition()->GetParticleName();
630 delete (*iter); // get rid of leftover p 630 delete (*iter); // get rid of leftover particle def!
631 if (verboseLevel >= 2 && particleName.fi 631 if (verboseLevel >= 2 && particleName.find("[",0) < particleName.size())
632 { 632 {
633 G4cout <<"------------------------" << 633 G4cout <<"------------------------" <<G4endl;
634 G4cout <<"The projectile fragment:" << 634 G4cout <<"The projectile fragment:" <<G4endl;
635 G4cout <<"------------------------" << 635 G4cout <<"------------------------" <<G4endl;
636 G4cout <<" fragmentP = " <<particleNam 636 G4cout <<" fragmentP = " <<particleName
637 <<" Energy = " <<secondary-> 637 <<" Energy = " <<secondary->GetKineticEnergy()
638 <<G4endl; 638 <<G4endl;
639 } 639 }
640 } 640 }
641 delete products; 641 delete products;
642 } 642 }
643 // 643 //
644 // 644 //
645 // Now decay the target nucleus - no boost is 645 // Now decay the target nucleus - no boost is applied since in this
646 // approximation it is assumed that there is n 646 // approximation it is assumed that there is negligible momentum transfer from
647 // the projectile. 647 // the projectile.
648 // 648 //
649 if (fragmentT != nullptr) 649 if (fragmentT != nullptr)
650 { 650 {
651 G4ReactionProductVector *products = nullpt 651 G4ReactionProductVector *products = nullptr;
652 // if (fragmentT->GetZ_asInt() != fragm 652 // if (fragmentT->GetZ_asInt() != fragmentT->GetA_asInt())
653 products = theExcitationHandler->BreakIt 653 products = theExcitationHandler->BreakItUp(*fragmentT);
654 // else 654 // else
655 // products = theExcitationHandlerx->Bre 655 // products = theExcitationHandlerx->BreakItUp(*fragmentT);
656 // delete fragmentT; 656 // delete fragmentT;
657 fragmentT = nullptr; 657 fragmentT = nullptr;
658 658
659 G4ReactionProductVector::iterator iter; 659 G4ReactionProductVector::iterator iter;
660 for (iter = products->begin(); iter != pro 660 for (iter = products->begin(); iter != products->end(); ++iter)
661 { 661 {
662 G4DynamicParticle *secondary = 662 G4DynamicParticle *secondary =
663 new G4DynamicParticle((*iter)->GetDefi 663 new G4DynamicParticle((*iter)->GetDefinition(),
664 (*iter)->GetTotalEnergy(), (*iter)->Ge 664 (*iter)->GetTotalEnergy(), (*iter)->GetMomentum());
665 theParticleChange.AddSecondary (secondar 665 theParticleChange.AddSecondary (secondary, secID);
666 G4String particleName = (*iter)->GetDefi 666 G4String particleName = (*iter)->GetDefinition()->GetParticleName();
667 delete (*iter); // get rid of leftover p 667 delete (*iter); // get rid of leftover particle def!
668 if (verboseLevel >= 2 && particleName.fi 668 if (verboseLevel >= 2 && particleName.find("[",0) < particleName.size())
669 { 669 {
670 G4cout <<"--------------------" <<G4en 670 G4cout <<"--------------------" <<G4endl;
671 G4cout <<"The target fragment:" <<G4en 671 G4cout <<"The target fragment:" <<G4endl;
672 G4cout <<"--------------------" <<G4en 672 G4cout <<"--------------------" <<G4endl;
673 G4cout <<" fragmentT = " <<particleNam 673 G4cout <<" fragmentT = " <<particleName
674 <<" Energy = " <<secondary-> 674 <<" Energy = " <<secondary->GetKineticEnergy()
675 <<G4endl; 675 <<G4endl;
676 } 676 }
677 } 677 }
678 delete products; 678 delete products;
679 } 679 }
680 680
681 if (verboseLevel >= 2) 681 if (verboseLevel >= 2)
682 G4cout <<"############################### 682 G4cout <<"########################################"
683 <<"############################### 683 <<"########################################"
684 <<G4endl; 684 <<G4endl;
685 685
686 delete theAbrasionGeometry; 686 delete theAbrasionGeometry;
687 return &theParticleChange; 687 return &theParticleChange;
688 } 688 }
689 ////////////////////////////////////////////// 689 ////////////////////////////////////////////////////////////////////////////////
690 // 690 //
691 G4Fragment *G4WilsonAbrasionModel::GetAbradedN 691 G4Fragment *G4WilsonAbrasionModel::GetAbradedNucleons (G4int Dabr, G4double A,
692 G4double Z, G4double r) 692 G4double Z, G4double r)
693 { 693 {
694 // 694 //
695 // 695 //
696 // Initialise variables. tau is the Fermi rad 696 // Initialise variables. tau is the Fermi radius of the nucleus. The variables
697 // p..., C... and gamma are used to help sampl 697 // p..., C... and gamma are used to help sample the secondary nucleon
698 // spectrum. 698 // spectrum.
699 // 699 //
700 700
701 G4double pK = hbarc * G4Pow::GetInstance() 701 G4double pK = hbarc * G4Pow::GetInstance()->A13(9.0 * pi / 4.0 * A) / (1.29 * r);
702 if (A <= 24.0) pK *= -0.229*G4Pow::GetInstan 702 if (A <= 24.0) pK *= -0.229*G4Pow::GetInstance()->A13(A) + 1.62;
703 G4double pKsq = pK * pK; 703 G4double pKsq = pK * pK;
704 G4double p1sq = 2.0/5.0 * pKsq; 704 G4double p1sq = 2.0/5.0 * pKsq;
705 G4double p2sq = 6.0/5.0 * pKsq; 705 G4double p2sq = 6.0/5.0 * pKsq;
706 G4double p3sq = 500.0 * 500.0; 706 G4double p3sq = 500.0 * 500.0;
707 G4double C1 = 1.0; 707 G4double C1 = 1.0;
708 G4double C2 = 0.03; 708 G4double C2 = 0.03;
709 G4double C3 = 0.0002; 709 G4double C3 = 0.0002;
710 G4double gamma = 90.0 * MeV; 710 G4double gamma = 90.0 * MeV;
711 G4double maxn = C1 + C2 + C3; 711 G4double maxn = C1 + C2 + C3;
712 // 712 //
713 // 713 //
714 // initialise the number of secondary nucleons 714 // initialise the number of secondary nucleons abraded to zero, and initially set
715 // the type of nucleon abraded to proton ... j 715 // the type of nucleon abraded to proton ... just for now.
716 // 716 //
717 G4double Aabr = 0.0; 717 G4double Aabr = 0.0;
718 G4double Zabr = 0.0; 718 G4double Zabr = 0.0;
719 G4ParticleDefinition *typeNucleon = G4Proton 719 G4ParticleDefinition *typeNucleon = G4Proton::ProtonDefinition();
720 G4DynamicParticle *dynamicNucleon = nullptr; 720 G4DynamicParticle *dynamicNucleon = nullptr;
721 G4ParticleMomentum pabr(0.0, 0.0, 0.0); 721 G4ParticleMomentum pabr(0.0, 0.0, 0.0);
722 // 722 //
723 // 723 //
724 // Now go through each abraded nucleon and sam 724 // Now go through each abraded nucleon and sample type, spectrum and angle.
725 // 725 //
726 G4bool isForLoopExitAnticipated = false; 726 G4bool isForLoopExitAnticipated = false;
727 for (G4int i=0; i<Dabr; ++i) 727 for (G4int i=0; i<Dabr; ++i)
728 { 728 {
729 // 729 //
730 // 730 //
731 // Sample the nucleon momentum distribution by 731 // Sample the nucleon momentum distribution by simple rejection techniques. We
732 // reject values of p == 0.0 since this causes 732 // reject values of p == 0.0 since this causes bad behaviour in the sinh term.
733 // 733 //
734 G4double p = 0.0; 734 G4double p = 0.0;
735 G4bool found = false; 735 G4bool found = false;
736 const G4int maxNumberOfLoops = 100000; 736 const G4int maxNumberOfLoops = 100000;
737 G4int loopCounter = -1; 737 G4int loopCounter = -1;
738 while (!found && ++loopCounter < maxNumber 738 while (!found && ++loopCounter < maxNumberOfLoops) /* Loop checking, 07.08.2015, A.Ribon */
739 { 739 {
740 while (p <= 0.0) p = npK * pK * G4Unifor 740 while (p <= 0.0) p = npK * pK * G4UniformRand(); /* Loop checking, 07.08.2015, A.Ribon */
741 G4double psq = p * p; 741 G4double psq = p * p;
742 found = maxn * G4UniformRand() < C1*G4Ex 742 found = maxn * G4UniformRand() < C1*G4Exp(-psq/p1sq/2.0) +
743 C2*G4Exp(-psq/p2sq/2.0) + C3*G4Exp(-ps 743 C2*G4Exp(-psq/p2sq/2.0) + C3*G4Exp(-psq/p3sq/2.0) + p/gamma/(0.5*(G4Exp(p/gamma)-G4Exp(-p/gamma)));
744 } 744 }
745 if ( loopCounter >= maxNumberOfLoops ) 745 if ( loopCounter >= maxNumberOfLoops )
746 { 746 {
747 isForLoopExitAnticipated = true; 747 isForLoopExitAnticipated = true;
748 break; 748 break;
749 } 749 }
750 // 750 //
751 // 751 //
752 // Determine the type of particle abraded. Ca 752 // Determine the type of particle abraded. Can only be proton or neutron,
753 // and the probability is determine to be prop 753 // and the probability is determine to be proportional to the ratio as found
754 // in the nucleus at each stage. 754 // in the nucleus at each stage.
755 // 755 //
756 G4double prob = (Z-Zabr)/(A-Aabr); 756 G4double prob = (Z-Zabr)/(A-Aabr);
757 if (G4UniformRand()<prob) 757 if (G4UniformRand()<prob)
758 { 758 {
759 Zabr++; 759 Zabr++;
760 typeNucleon = G4Proton::ProtonDefinition 760 typeNucleon = G4Proton::ProtonDefinition();
761 } 761 }
762 else 762 else
763 typeNucleon = G4Neutron::NeutronDefiniti 763 typeNucleon = G4Neutron::NeutronDefinition();
764 Aabr++; 764 Aabr++;
765 // 765 //
766 // 766 //
767 // The angular distribution of the secondary n 767 // The angular distribution of the secondary nucleons is approximated to an
768 // isotropic distribution in the rest frame of 768 // isotropic distribution in the rest frame of the nucleus (this will be Lorentz
769 // boosted later. 769 // boosted later.
770 // 770 //
771 G4double costheta = 2.*G4UniformRand()-1.0 771 G4double costheta = 2.*G4UniformRand()-1.0;
772 G4double sintheta = std::sqrt((1.0 - costh 772 G4double sintheta = std::sqrt((1.0 - costheta)*(1.0 + costheta));
773 G4double phi = 2.0*pi*G4UniformRand() 773 G4double phi = 2.0*pi*G4UniformRand()*rad;
774 G4ThreeVector direction(sintheta*std::cos( 774 G4ThreeVector direction(sintheta*std::cos(phi),sintheta*std::sin(phi),costheta);
775 G4double nucleonMass = typeNucleon->GetPDG 775 G4double nucleonMass = typeNucleon->GetPDGMass();
776 G4double E = std::sqrt(p*p + nuc 776 G4double E = std::sqrt(p*p + nucleonMass*nucleonMass)-nucleonMass;
777 dynamicNucleon = new G4DynamicParticle(typ 777 dynamicNucleon = new G4DynamicParticle(typeNucleon,direction,E);
778 theParticleChange.AddSecondary (dynamicNuc 778 theParticleChange.AddSecondary (dynamicNucleon, secID);
779 pabr += p*direction; 779 pabr += p*direction;
780 } 780 }
781 // 781 //
782 // 782 //
783 // Next determine the details of the nuclear p 783 // Next determine the details of the nuclear prefragment .. that is if there
784 // is one or more protons in the residue. (No 784 // 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 785 // energy is a safety factor to avoid any possibility of negative rest mass
786 // energy.) 786 // energy.)
787 // 787 //
788 G4Fragment *fragment = nullptr; 788 G4Fragment *fragment = nullptr;
789 if ( ! isForLoopExitAnticipated && Z-Zabr>=1 789 if ( ! isForLoopExitAnticipated && Z-Zabr>=1.0 )
790 { 790 {
791 G4double ionMass = G4ParticleTable::GetPar 791 G4double ionMass = G4ParticleTable::GetParticleTable()->GetIonTable()->
792 GetIonMass(G4lrint(Z-Za 792 GetIonMass(G4lrint(Z-Zabr),G4lrint(A-Aabr));
793 G4double E = std::sqrt(pabr.mag2() + 793 G4double E = std::sqrt(pabr.mag2() + ionMass*ionMass);
794 G4LorentzVector lorentzVector = G4LorentzV 794 G4LorentzVector lorentzVector = G4LorentzVector(-pabr, E + 1.0*eV);
795 fragment = 795 fragment =
796 new G4Fragment((G4int) (A-Aabr), (G4int) 796 new G4Fragment((G4int) (A-Aabr), (G4int) (Z-Zabr), lorentzVector);
797 } 797 }
798 798
799 return fragment; 799 return fragment;
800 } 800 }
801 ////////////////////////////////////////////// 801 ////////////////////////////////////////////////////////////////////////////////
802 // 802 //
803 G4double G4WilsonAbrasionModel::GetNucleonIndu 803 G4double G4WilsonAbrasionModel::GetNucleonInducedExcitation
804 (G4double rP, G4double rT, G4double r) 804 (G4double rP, G4double rT, G4double r)
805 { 805 {
806 // 806 //
807 // 807 //
808 // Initialise variables. 808 // Initialise variables.
809 // 809 //
810 G4double Cl = 0.0; 810 G4double Cl = 0.0;
811 G4double rPsq = rP * rP; 811 G4double rPsq = rP * rP;
812 G4double rTsq = rT * rT; 812 G4double rTsq = rT * rT;
813 G4double rsq = r * r; 813 G4double rsq = r * r;
814 // 814 //
815 // 815 //
816 // Depending upon the impact parameter, a diff 816 // Depending upon the impact parameter, a different form of the chord length is
817 // is used. 817 // is used.
818 // 818 //
819 if (r > rT) Cl = 2.0*std::sqrt(rPsq + 2.0*r* 819 if (r > rT) Cl = 2.0*std::sqrt(rPsq + 2.0*r*rT - rsq - rTsq);
820 else Cl = 2.0*rP; 820 else Cl = 2.0*rP;
821 // 821 //
822 // 822 //
823 // The next lines have been changed to include 823 // The next lines have been changed to include a "catch" to make sure if the
824 // projectile and target are too close, Ct is 824 // projectile and target are too close, Ct is set to twice rP or twice rT.
825 // Otherwise the standard Wilson algorithm sho 825 // Otherwise the standard Wilson algorithm should work fine.
826 // PRT 20091023. 826 // PRT 20091023.
827 // 827 //
828 G4double Ct = 0.0; 828 G4double Ct = 0.0;
829 if (rT > rP && rsq < rTsq - rPsq) Ct = 829 if (rT > rP && rsq < rTsq - rPsq) Ct = 2.0 * rP;
830 else if (rP > rT && rsq < rPsq - rTsq) Ct = 830 else if (rP > rT && rsq < rPsq - rTsq) Ct = 2.0 * rT;
831 else { 831 else {
832 G4double bP = (rPsq+rsq-rTsq)/2.0/r; 832 G4double bP = (rPsq+rsq-rTsq)/2.0/r;
833 G4double x = rPsq - bP*bP; 833 G4double x = rPsq - bP*bP;
834 if (x < 0.0) { 834 if (x < 0.0) {
835 G4cerr <<"############################## 835 G4cerr <<"########################################"
836 <<"############################## 836 <<"########################################"
837 <<G4endl; 837 <<G4endl;
838 G4cerr <<"ERROR IN G4WilsonAbrasionModel 838 G4cerr <<"ERROR IN G4WilsonAbrasionModel::GetNucleonInducedExcitation"
839 <<G4endl; 839 <<G4endl;
840 G4cerr <<"rPsq - bP*bP < 0.0 and cannot 840 G4cerr <<"rPsq - bP*bP < 0.0 and cannot be square-rooted" <<G4endl;
841 G4cerr <<"Set to zero instead" <<G4endl; 841 G4cerr <<"Set to zero instead" <<G4endl;
842 G4cerr <<"############################## 842 G4cerr <<"########################################"
843 <<"############################## 843 <<"########################################"
844 <<G4endl; 844 <<G4endl;
845 } 845 }
846 Ct = 2.0*std::sqrt(x); 846 Ct = 2.0*std::sqrt(x);
847 } 847 }
848 848
849 G4double Ex = 13.0 * Cl / fermi; 849 G4double Ex = 13.0 * Cl / fermi;
850 if (Ct > 1.5*fermi) 850 if (Ct > 1.5*fermi)
851 Ex += 13.0 * Cl / fermi /3.0 * (Ct/fermi - 851 Ex += 13.0 * Cl / fermi /3.0 * (Ct/fermi - 1.5);
852 852
853 return Ex; 853 return Ex;
854 } 854 }
855 ////////////////////////////////////////////// 855 ////////////////////////////////////////////////////////////////////////////////
856 // 856 //
857 void G4WilsonAbrasionModel::SetUseAblation (G4 857 void G4WilsonAbrasionModel::SetUseAblation (G4bool useAblation1)
858 { 858 {
859 if (useAblation != useAblation1) 859 if (useAblation != useAblation1)
860 { 860 {
861 useAblation = useAblation1; 861 useAblation = useAblation1;
862 if (useAblation) 862 if (useAblation)
863 { 863 {
864 theAblation = new G4WilsonAblationModel; 864 theAblation = new G4WilsonAblationModel;
865 theAblation->SetVerboseLevel(verboseLeve 865 theAblation->SetVerboseLevel(verboseLevel);
866 theExcitationHandler->SetEvaporation(the 866 theExcitationHandler->SetEvaporation(theAblation);
867 } 867 }
868 else 868 else
869 { 869 {
870 delete theExcitationHandler; 870 delete theExcitationHandler;
871 theAblation = nullp 871 theAblation = nullptr;
872 theExcitationHandler = new G4Excitation 872 theExcitationHandler = new G4ExcitationHandler();
873 } 873 }
874 } 874 }
875 return; 875 return;
876 } 876 }
877 ////////////////////////////////////////////// 877 ////////////////////////////////////////////////////////////////////////////////
878 // 878 //
879 void G4WilsonAbrasionModel::PrintWelcomeMessag 879 void G4WilsonAbrasionModel::PrintWelcomeMessage ()
880 { 880 {
881 G4cout <<G4endl; 881 G4cout <<G4endl;
882 G4cout <<" ********************************* 882 G4cout <<" *****************************************************************"
883 <<G4endl; 883 <<G4endl;
884 G4cout <<" Nuclear abrasion model for nuclea 884 G4cout <<" Nuclear abrasion model for nuclear-nuclear interactions activated"
885 <<G4endl; 885 <<G4endl;
886 G4cout <<" (Written by QinetiQ Ltd for the E 886 G4cout <<" (Written by QinetiQ Ltd for the European Space Agency)"
887 <<G4endl; 887 <<G4endl;
888 G4cout <<" ********************************* 888 G4cout <<" *****************************************************************"
889 <<G4endl; 889 <<G4endl;
890 G4cout << G4endl; 890 G4cout << G4endl;
891 891
892 return; 892 return;
893 } 893 }
894 ////////////////////////////////////////////// 894 ////////////////////////////////////////////////////////////////////////////////
895 // 895 //
896 896