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35 // 35 //
36 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 36 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
37 // 37 //
38 // MODULE: G4EMDissociation.cc 38 // MODULE: G4EMDissociation.cc
39 // 39 //
40 // Version: B.1 40 // Version: B.1
41 // Date: 15/04/04 41 // Date: 15/04/04
42 // Author: P R Truscott 42 // Author: P R Truscott
43 // Organisation: QinetiQ Ltd, UK 43 // Organisation: QinetiQ Ltd, UK
44 // Customer: ESA/ESTEC, NOORDWIJK 44 // Customer: ESA/ESTEC, NOORDWIJK
45 // Contract: 17191/03/NL/LvH 45 // Contract: 17191/03/NL/LvH
46 // 46 //
47 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 47 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
48 // 48 //
49 // CHANGE HISTORY 49 // CHANGE HISTORY
50 // -------------- 50 // --------------
51 // 51 //
52 // 17 October 2003, P R Truscott, QinetiQ Ltd, 52 // 17 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 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 58 // %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
59 ////////////////////////////////////////////// 59 ////////////////////////////////////////////////////////////////////////////////
60 // 60 //
61 #include "G4EMDissociation.hh" 61 #include "G4EMDissociation.hh"
62 #include "G4PhysicalConstants.hh" 62 #include "G4PhysicalConstants.hh"
63 #include "G4SystemOfUnits.hh" 63 #include "G4SystemOfUnits.hh"
>> 64 #include "G4Evaporation.hh"
>> 65 #include "G4FermiBreakUp.hh"
>> 66 #include "G4StatMF.hh"
64 #include "G4ParticleDefinition.hh" 67 #include "G4ParticleDefinition.hh"
65 #include "G4LorentzVector.hh" 68 #include "G4LorentzVector.hh"
66 #include "G4PhysicsFreeVector.hh" 69 #include "G4PhysicsFreeVector.hh"
67 #include "G4EMDissociationCrossSection.hh" 70 #include "G4EMDissociationCrossSection.hh"
68 #include "G4Proton.hh" 71 #include "G4Proton.hh"
69 #include "G4Neutron.hh" 72 #include "G4Neutron.hh"
>> 73 #include "G4ParticleTable.hh"
70 #include "G4IonTable.hh" 74 #include "G4IonTable.hh"
>> 75 #include "G4GeneralPhaseSpaceDecay.hh"
71 #include "G4DecayProducts.hh" 76 #include "G4DecayProducts.hh"
72 #include "G4DynamicParticle.hh" 77 #include "G4DynamicParticle.hh"
73 #include "G4Fragment.hh" 78 #include "G4Fragment.hh"
74 #include "G4ReactionProductVector.hh" 79 #include "G4ReactionProductVector.hh"
75 #include "Randomize.hh" 80 #include "Randomize.hh"
76 #include "globals.hh" 81 #include "globals.hh"
77 #include "G4PhysicsModelCatalog.hh" <<
78 82
79 G4EMDissociation::G4EMDissociation() : << 83 G4EMDissociation::G4EMDissociation():G4HadronicInteraction("EMDissociation") {
80 G4HadronicInteraction("EMDissociation"), << 84
81 secID_projectileDissociation(-1), secID_targ <<
82 { <<
83 // Send message to stdout to advise that the 85 // Send message to stdout to advise that the G4EMDissociation model is being
84 // used. 86 // used.
85 PrintWelcomeMessage(); 87 PrintWelcomeMessage();
86 88
87 // No de-excitation handler has been supplie 89 // No de-excitation handler has been supplied - define the default handler.
88 theExcitationHandler = new G4Exci 90 theExcitationHandler = new G4ExcitationHandler;
>> 91 G4Evaporation* theEvaporation = new G4Evaporation;
>> 92 G4FermiBreakUp* theFermiBreakUp = new G4FermiBreakUp;
>> 93 G4StatMF* theMF = new G4StatMF;
>> 94 theExcitationHandler->SetEvaporation(theEvaporation);
>> 95 theExcitationHandler->SetFermiModel(theFermiBreakUp);
>> 96 theExcitationHandler->SetMultiFragmentation(theMF);
>> 97 theExcitationHandler->SetMaxAandZForFermiBreakUp(12, 6);
89 theExcitationHandler->SetMinEForMultiFrag(5. 98 theExcitationHandler->SetMinEForMultiFrag(5.0*MeV);
90 handlerDefinedInternally = true; 99 handlerDefinedInternally = true;
91 100
92 // This EM dissociation model needs access t 101 // This EM dissociation model needs access to the cross-sections held in
93 // G4EMDissociationCrossSection. 102 // G4EMDissociationCrossSection.
94 dissociationCrossSection = new G4EMDissociat 103 dissociationCrossSection = new G4EMDissociationCrossSection;
95 thePhotonSpectrum = new G4EMDissociationSpec 104 thePhotonSpectrum = new G4EMDissociationSpectrum;
96 105
97 // Set the minimum and maximum range for the 106 // Set the minimum and maximum range for the model (despite nomanclature, this
98 // is in energy per nucleon number). 107 // is in energy per nucleon number).
99 SetMinEnergy(100.0*MeV); 108 SetMinEnergy(100.0*MeV);
100 SetMaxEnergy(500.0*GeV); 109 SetMaxEnergy(500.0*GeV);
101 110
102 // Set the default verbose level to 0 - no o 111 // Set the default verbose level to 0 - no output.
103 verboseLevel = 0; 112 verboseLevel = 0;
>> 113 }
104 114
105 // Creator model ID for the secondaries crea << 115 /*
106 secID_projectileDissociation = G4PhysicsMode << 116 G4EMDissociation::G4EMDissociation(const G4EMDissociation& emd)
107 secID_targetDissociation = G4PhysicsMode << 117 : G4HadronicInteraction(emd)
>> 118 {
>> 119 if (emd.theExcitationHandler != 0) {
>> 120 theExcitationHandler = new G4ExcitationHandler;
>> 121 *theExcitationHandler = *emd.theExcitationHandler;
>> 122 }
>> 123
>> 124 handlerDefinedInternally = emd.handlerDefinedInternally;
>> 125
>> 126 if (emd.dissociationCrossSection != 0) {
>> 127 dissociationCrossSection = new G4EMDissociationCrossSection;
>> 128 *dissociationCrossSection = *emd.dissociationCrossSection;
>> 129 }
>> 130
>> 131 if (emd.thePhotonSpectrum !- 0) {
>> 132 thePhotonSpectrum = new G4EMDissociationSpectrum;
>> 133 *thePhotonSpectrum = *emd.thePhotonSpectrum;
108 } 134 }
>> 135 */
109 136
110 G4EMDissociation::G4EMDissociation (G4Excitati << 137 G4EMDissociation::G4EMDissociation (G4ExcitationHandler *aExcitationHandler)
111 G4HadronicInteraction("EMDissociation"), <<
112 secID_projectileDissociation(-1), secID_targ <<
113 { 138 {
114 // Send message to stdout to advise that the 139 // Send message to stdout to advise that the G4EMDissociation model is being
115 // used. 140 // used.
116 PrintWelcomeMessage(); 141 PrintWelcomeMessage();
117 142
118 theExcitationHandler = aExcitationHandle 143 theExcitationHandler = aExcitationHandler;
119 handlerDefinedInternally = false; 144 handlerDefinedInternally = false;
120 145
121 // This EM dissociation model needs access t 146 // This EM dissociation model needs access to the cross-sections held in
122 // G4EMDissociationCrossSection. 147 // G4EMDissociationCrossSection.
123 dissociationCrossSection = new G4EMDissociat 148 dissociationCrossSection = new G4EMDissociationCrossSection;
124 thePhotonSpectrum = new G4EMDissociationSpec 149 thePhotonSpectrum = new G4EMDissociationSpectrum;
125 150
126 // Set the minimum and maximum range for the 151 // Set the minimum and maximum range for the model (despite nomanclature, this
127 // is in energy per nucleon number) 152 // is in energy per nucleon number)
128 SetMinEnergy(100.0*MeV); 153 SetMinEnergy(100.0*MeV);
129 SetMaxEnergy(500.0*GeV); 154 SetMaxEnergy(500.0*GeV);
130 verboseLevel = 0; 155 verboseLevel = 0;
131 <<
132 // Creator model ID for the secondaries crea <<
133 secID_projectileDissociation = G4PhysicsMode <<
134 secID_targetDissociation = G4PhysicsMode <<
135 } 156 }
136 157
137 158
138 G4EMDissociation::~G4EMDissociation() { 159 G4EMDissociation::~G4EMDissociation() {
139 if (handlerDefinedInternally) delete theExci 160 if (handlerDefinedInternally) delete theExcitationHandler;
140 // delete dissociationCrossSection; 161 // delete dissociationCrossSection;
141 // Cross section deleted by G4CrossSectionRe 162 // Cross section deleted by G4CrossSectionRegistry; don't do it here
142 // Bug reported by Gong Ding in Bug Report # 163 // Bug reported by Gong Ding in Bug Report #1339
143 delete thePhotonSpectrum; 164 delete thePhotonSpectrum;
144 } 165 }
145 166
146 167
147 G4HadFinalState *G4EMDissociation::ApplyYourse 168 G4HadFinalState *G4EMDissociation::ApplyYourself
148 (const G4HadProjectile &theTrack, G4Nucleus 169 (const G4HadProjectile &theTrack, G4Nucleus &theTarget)
149 { 170 {
150 // The secondaries will be returned in G4Had 171 // The secondaries will be returned in G4HadFinalState &theParticleChange -
151 // initialise this. 172 // initialise this.
152 173
153 theParticleChange.Clear(); 174 theParticleChange.Clear();
154 theParticleChange.SetStatusChange(stopAndKil 175 theParticleChange.SetStatusChange(stopAndKill);
155 176
156 // Get relevant information about the projec 177 // Get relevant information about the projectile and target (A, Z) and
157 // energy/nuc, momentum, velocity, Lorentz f 178 // energy/nuc, momentum, velocity, Lorentz factor and rest-mass of the
158 // projectile. 179 // projectile.
159 180
160 const G4ParticleDefinition *definitionP = th 181 const G4ParticleDefinition *definitionP = theTrack.GetDefinition();
161 const G4double AP = definitionP->GetBaryonN 182 const G4double AP = definitionP->GetBaryonNumber();
162 const G4double ZP = definitionP->GetPDGChar 183 const G4double ZP = definitionP->GetPDGCharge();
163 G4LorentzVector pP = theTrack.Get4Momentum() 184 G4LorentzVector pP = theTrack.Get4Momentum();
164 G4double E = theTrack.GetKineticEner 185 G4double E = theTrack.GetKineticEnergy()/AP;
165 G4double MP = theTrack.GetTotalEnergy 186 G4double MP = theTrack.GetTotalEnergy() - E*AP;
166 G4double b = pP.beta(); 187 G4double b = pP.beta();
167 G4double AT = theTarget.GetA_asInt(); 188 G4double AT = theTarget.GetA_asInt();
168 G4double ZT = theTarget.GetZ_asInt(); 189 G4double ZT = theTarget.GetZ_asInt();
169 G4double MT = G4NucleiProperties::Get 190 G4double MT = G4NucleiProperties::GetNuclearMass(AT,ZT);
170 191
171 // Depending upon the verbosity level, outpu 192 // Depending upon the verbosity level, output the initial information on the
172 // projectile and target 193 // projectile and target
173 if (verboseLevel >= 2) { 194 if (verboseLevel >= 2) {
174 G4cout.precision(6); 195 G4cout.precision(6);
175 G4cout <<"################################ 196 G4cout <<"########################################"
176 <<"################################ 197 <<"########################################"
177 <<G4endl; 198 <<G4endl;
178 G4cout <<"IN G4EMDissociation" <<G4endl; 199 G4cout <<"IN G4EMDissociation" <<G4endl;
179 G4cout <<"Initial projectile A=" <<AP 200 G4cout <<"Initial projectile A=" <<AP
180 <<", Z=" <<ZP 201 <<", Z=" <<ZP
181 <<G4endl; 202 <<G4endl;
182 G4cout <<"Initial target A=" <<AT 203 G4cout <<"Initial target A=" <<AT
183 <<", Z=" <<ZT 204 <<", Z=" <<ZT
184 <<G4endl; 205 <<G4endl;
185 G4cout <<"Projectile momentum and Energy/n 206 G4cout <<"Projectile momentum and Energy/nuc = " <<pP <<" ," <<E <<G4endl;
186 } 207 }
187 208
188 // Initialise the variables which will be us 209 // Initialise the variables which will be used with the phase-space decay and
189 // to boost the secondaries from the interac 210 // to boost the secondaries from the interaction.
190 211
191 G4ParticleDefinition *typeNucleon = NULL; 212 G4ParticleDefinition *typeNucleon = NULL;
192 G4ParticleDefinition *typeDaughter = NULL; 213 G4ParticleDefinition *typeDaughter = NULL;
193 G4double Eg = 0.0; 214 G4double Eg = 0.0;
194 G4double mass = 0.0; 215 G4double mass = 0.0;
195 G4ThreeVector boost = G4ThreeVector(0.0, 0.0 216 G4ThreeVector boost = G4ThreeVector(0.0, 0.0, 0.0);
196 217
197 // Determine the cross-sections at the giant 218 // Determine the cross-sections at the giant dipole and giant quadrupole
198 // resonance energies for the projectile and 219 // resonance energies for the projectile and then target. The information is
199 // initially provided in the G4PhysicsFreeVe 220 // initially provided in the G4PhysicsFreeVector individually for the E1
200 // and E2 fields. These are then summed. 221 // and E2 fields. These are then summed.
201 222
202 G4double bmin = thePhotonSpectrum->GetCloses 223 G4double bmin = thePhotonSpectrum->GetClosestApproach(AP, ZP, AT, ZT, b);
203 G4PhysicsFreeVector *crossSectionP = dissoci 224 G4PhysicsFreeVector *crossSectionP = dissociationCrossSection->
204 GetCrossSectionForProjectile(AP, ZP, AT, Z 225 GetCrossSectionForProjectile(AP, ZP, AT, ZT, b, bmin);
205 G4PhysicsFreeVector *crossSectionT = dissoci 226 G4PhysicsFreeVector *crossSectionT = dissociationCrossSection->
206 GetCrossSectionForTarget(AP, ZP, AT, ZT, b 227 GetCrossSectionForTarget(AP, ZP, AT, ZT, b, bmin);
207 228
208 G4double totCrossSectionP = (*crossSectionP) 229 G4double totCrossSectionP = (*crossSectionP)[0]+(*crossSectionP)[1];
209 G4double totCrossSectionT = (*crossSectionT) 230 G4double totCrossSectionT = (*crossSectionT)[0]+(*crossSectionT)[1];
210 231
211 // Now sample whether the interaction involv 232 // Now sample whether the interaction involved EM dissociation of the projectile
212 // or the target. 233 // or the target.
213 << 234
214 G4int secID = -1; // Creator model ID for t <<
215 if (G4UniformRand() < 235 if (G4UniformRand() <
216 totCrossSectionP / (totCrossSectionP + tot 236 totCrossSectionP / (totCrossSectionP + totCrossSectionT)) {
217 237
218 // It was the projectile which underwent E 238 // It was the projectile which underwent EM dissociation. Define the Lorentz
219 // boost to be applied to the secondaries, 239 // boost to be applied to the secondaries, and sample whether a proton or a
220 // neutron was ejected. Then determine th 240 // neutron was ejected. Then determine the energy of the virtual gamma ray
221 // which passed from the target nucleus .. 241 // which passed from the target nucleus ... this will be used to define the
222 // excitation of the projectile. 242 // excitation of the projectile.
223 243
224 secID = secID_projectileDissociation; <<
225 mass = MP; 244 mass = MP;
226 if (G4UniformRand() < dissociationCrossSec 245 if (G4UniformRand() < dissociationCrossSection->
227 GetWilsonProbabilityForProtonDissociatio 246 GetWilsonProbabilityForProtonDissociation (AP, ZP))
228 { 247 {
229 if (verboseLevel >= 2) 248 if (verboseLevel >= 2)
230 G4cout <<"Projectile underwent EM diss 249 G4cout <<"Projectile underwent EM dissociation producing a proton"
231 <<G4endl; 250 <<G4endl;
232 typeNucleon = G4Proton::ProtonDefinition 251 typeNucleon = G4Proton::ProtonDefinition();
233 typeDaughter = G4IonTable::GetIonTable() << 252 typeDaughter = G4ParticleTable::GetParticleTable()->
234 GetIon((G4int) ZP-1, (G4int) AP-1, 0.0); 253 GetIon((G4int) ZP-1, (G4int) AP-1, 0.0);
235 } 254 }
236 else 255 else
237 { 256 {
238 if (verboseLevel >= 2) 257 if (verboseLevel >= 2)
239 G4cout <<"Projectile underwent EM diss 258 G4cout <<"Projectile underwent EM dissociation producing a neutron"
240 <<G4endl; 259 <<G4endl;
241 typeNucleon = G4Neutron::NeutronDefiniti 260 typeNucleon = G4Neutron::NeutronDefinition();
242 typeDaughter = G4IonTable::GetIonTable() << 261 typeDaughter = G4ParticleTable::GetParticleTable()->
243 GetIon((G4int) ZP, (G4int) AP-1, 0.0); 262 GetIon((G4int) ZP, (G4int) AP-1, 0.0);
244 } 263 }
245 if (G4UniformRand() < (*crossSectionP)[0]/ 264 if (G4UniformRand() < (*crossSectionP)[0]/totCrossSectionP)
246 { 265 {
247 Eg = crossSectionP->GetLowEdgeEnergy(0); 266 Eg = crossSectionP->GetLowEdgeEnergy(0);
248 if (verboseLevel >= 2) 267 if (verboseLevel >= 2)
249 G4cout <<"Transition type was E1" <<G4 268 G4cout <<"Transition type was E1" <<G4endl;
250 } 269 }
251 else 270 else
252 { 271 {
253 Eg = crossSectionP->GetLowEdgeEnergy(1); 272 Eg = crossSectionP->GetLowEdgeEnergy(1);
254 if (verboseLevel >= 2) 273 if (verboseLevel >= 2)
255 G4cout <<"Transition type was E2" <<G4 274 G4cout <<"Transition type was E2" <<G4endl;
256 } 275 }
257 276
258 // We need to define a Lorentz vector with 277 // We need to define a Lorentz vector with the original momentum, but total
259 // energy includes the projectile and virt 278 // energy includes the projectile and virtual gamma. This is then used
260 // to calculate the boost required for the 279 // to calculate the boost required for the secondaries.
261 280
262 pP.setE( std::sqrt( pP.vect().mag2() + (ma << 281 pP.setE(pP.e()+Eg);
263 boost = pP.findBoostToCM(); 282 boost = pP.findBoostToCM();
264 } 283 }
265 else 284 else
266 { 285 {
267 // It was the target which underwent EM di 286 // It was the target which underwent EM dissociation. Sample whether a
268 // proton or a neutron was ejected. Then 287 // proton or a neutron was ejected. Then determine the energy of the virtual
269 // gamma ray which passed from the project 288 // gamma ray which passed from the projectile nucleus ... this will be used to
270 // define the excitation of the target. 289 // define the excitation of the target.
271 << 290
272 secID = secID_targetDissociation; <<
273 mass = MT; 291 mass = MT;
274 if (G4UniformRand() < dissociationCrossSec 292 if (G4UniformRand() < dissociationCrossSection->
275 GetWilsonProbabilityForProtonDissociatio 293 GetWilsonProbabilityForProtonDissociation (AT, ZT))
276 { 294 {
277 if (verboseLevel >= 2) 295 if (verboseLevel >= 2)
278 G4cout <<"Target underwent EM dissocia 296 G4cout <<"Target underwent EM dissociation producing a proton"
279 <<G4endl; 297 <<G4endl;
280 typeNucleon = G4Proton::ProtonDefinition 298 typeNucleon = G4Proton::ProtonDefinition();
281 typeDaughter = G4IonTable::GetIonTable() << 299 typeDaughter = G4ParticleTable::GetParticleTable()->
282 GetIon((G4int) ZT-1, (G4int) AT-1, 0.0); 300 GetIon((G4int) ZT-1, (G4int) AT-1, 0.0);
283 } 301 }
284 else 302 else
285 { 303 {
286 if (verboseLevel >= 2) 304 if (verboseLevel >= 2)
287 G4cout <<"Target underwent EM dissocia 305 G4cout <<"Target underwent EM dissociation producing a neutron"
288 <<G4endl; 306 <<G4endl;
289 typeNucleon = G4Neutron::NeutronDefiniti 307 typeNucleon = G4Neutron::NeutronDefinition();
290 typeDaughter = G4IonTable::GetIonTable() << 308 typeDaughter = G4ParticleTable::GetParticleTable()->
291 GetIon((G4int) ZT, (G4int) AT-1, 0.0); 309 GetIon((G4int) ZT, (G4int) AT-1, 0.0);
292 } 310 }
293 if (G4UniformRand() < (*crossSectionT)[0]/ 311 if (G4UniformRand() < (*crossSectionT)[0]/totCrossSectionT)
294 { 312 {
295 Eg = crossSectionT->GetLowEdgeEnergy(0); 313 Eg = crossSectionT->GetLowEdgeEnergy(0);
296 if (verboseLevel >= 2) 314 if (verboseLevel >= 2)
297 G4cout <<"Transition type was E1" <<G4 315 G4cout <<"Transition type was E1" <<G4endl;
298 } 316 }
299 else 317 else
300 { 318 {
301 Eg = crossSectionT->GetLowEdgeEnergy(1); 319 Eg = crossSectionT->GetLowEdgeEnergy(1);
302 if (verboseLevel >= 2) 320 if (verboseLevel >= 2)
303 G4cout <<"Transition type was E2" <<G4 321 G4cout <<"Transition type was E2" <<G4endl;
304 } 322 }
305 323
306 // Add the projectile to theParticleChange 324 // Add the projectile to theParticleChange, less the energy of the
307 // not-so-virtual gamma-ray. Not that at 325 // not-so-virtual gamma-ray. Not that at the moment, no lateral momentum
308 // is transferred between the projectile a 326 // is transferred between the projectile and target nuclei.
309 327
310 G4ThreeVector v = pP.vect(); 328 G4ThreeVector v = pP.vect();
311 v.setMag(1.0); 329 v.setMag(1.0);
312 G4DynamicParticle *changedP = new G4Dynami << 330 G4DynamicParticle *changedP = new G4DynamicParticle
313 theParticleChange.AddSecondary (changedP, << 331 (const_cast<G4ParticleDefinition*>(definitionP), v, E*AP-Eg);
>> 332 theParticleChange.AddSecondary (changedP);
314 if (verboseLevel >= 2) 333 if (verboseLevel >= 2)
315 { 334 {
316 G4cout <<"Projectile change:" <<G4endl; 335 G4cout <<"Projectile change:" <<G4endl;
317 changedP->DumpInfo(); 336 changedP->DumpInfo();
318 } 337 }
319 } 338 }
320 339
321 // Perform a two-body decay based on the res 340 // Perform a two-body decay based on the restmass energy of the parent and
322 // gamma-ray, and the masses of the daughter 341 // gamma-ray, and the masses of the daughters. In the frame of reference of
323 // the nucles, the angular distribution is s 342 // the nucles, the angular distribution is sampled isotropically, but the
324 // the nucleon and secondary nucleus are boo 343 // the nucleon and secondary nucleus are boosted if they've come from the
325 // projectile. 344 // projectile.
326 345
327 G4double e = mass + Eg; 346 G4double e = mass + Eg;
328 G4double mass1 = typeNucleon->GetPDGMass(); 347 G4double mass1 = typeNucleon->GetPDGMass();
329 G4double mass2 = typeDaughter->GetPDGMass(); 348 G4double mass2 = typeDaughter->GetPDGMass();
330 G4double pp = (e+mass1+mass2)*(e+mass1-mass2 349 G4double pp = (e+mass1+mass2)*(e+mass1-mass2)*
331 (e-mass1+mass2)*(e-mass1-mass2 350 (e-mass1+mass2)*(e-mass1-mass2)/(4.0*e*e);
332 if (pp < 0.0) { 351 if (pp < 0.0) {
333 pp = 1.0*eV; 352 pp = 1.0*eV;
334 // if (verboseLevel >`= 1) 353 // if (verboseLevel >`= 1)
335 // { 354 // {
336 // G4cout <<"IN G4EMDissociation::ApplyYo 355 // G4cout <<"IN G4EMDissociation::ApplyYoursef" <<G4endl;
337 // G4cout <<"Error in mass of secondaries 356 // G4cout <<"Error in mass of secondaries compared with primary:" <<G4endl;
338 // G4cout <<"Rest mass of primary = 357 // G4cout <<"Rest mass of primary = " <<mass <<" MeV" <<G4endl;
339 // G4cout <<"Virtual gamma energy = 358 // G4cout <<"Virtual gamma energy = " <<Eg <<" MeV" <<G4endl;
340 // G4cout <<"Rest mass of secondary #1 = 359 // G4cout <<"Rest mass of secondary #1 = " <<mass1 <<" MeV" <<G4endl;
341 // G4cout <<"Rest mass of secondary #2 = 360 // G4cout <<"Rest mass of secondary #2 = " <<mass2 <<" MeV" <<G4endl;
342 // } 361 // }
343 } 362 }
344 else 363 else
345 pp = std::sqrt(pp); 364 pp = std::sqrt(pp);
346 G4double costheta = 2.*G4UniformRand()-1.0; 365 G4double costheta = 2.*G4UniformRand()-1.0;
347 G4double sintheta = std::sqrt((1.0 - costhet 366 G4double sintheta = std::sqrt((1.0 - costheta)*(1.0 + costheta));
348 G4double phi = 2.0*pi*G4UniformRand()*r 367 G4double phi = 2.0*pi*G4UniformRand()*rad;
349 G4ThreeVector direction(sintheta*std::cos(ph 368 G4ThreeVector direction(sintheta*std::cos(phi),sintheta*std::sin(phi),costheta);
350 G4DynamicParticle *dynamicNucleon = 369 G4DynamicParticle *dynamicNucleon =
351 new G4DynamicParticle(typeNucleon, directi 370 new G4DynamicParticle(typeNucleon, direction*pp);
352 dynamicNucleon->Set4Momentum(dynamicNucleon- 371 dynamicNucleon->Set4Momentum(dynamicNucleon->Get4Momentum().boost(-boost));
353 G4DynamicParticle *dynamicDaughter = 372 G4DynamicParticle *dynamicDaughter =
354 new G4DynamicParticle(typeDaughter, -direc 373 new G4DynamicParticle(typeDaughter, -direction*pp);
355 dynamicDaughter->Set4Momentum(dynamicDaughte 374 dynamicDaughter->Set4Momentum(dynamicDaughter->Get4Momentum().boost(-boost));
356 375
357 // The "decay" products have to be transferr 376 // The "decay" products have to be transferred to the G4HadFinalState object.
358 // Furthermore, the residual nucleus should 377 // Furthermore, the residual nucleus should be de-excited.
359 378
360 theParticleChange.AddSecondary (dynamicNucle << 379 theParticleChange.AddSecondary (dynamicNucleon);
361 if (verboseLevel >= 2) { 380 if (verboseLevel >= 2) {
362 G4cout <<"Nucleon from the EMD process:" < 381 G4cout <<"Nucleon from the EMD process:" <<G4endl;
363 dynamicNucleon->DumpInfo(); 382 dynamicNucleon->DumpInfo();
364 } 383 }
365 384
366 G4Fragment* theFragment = new 385 G4Fragment* theFragment = new
367 G4Fragment(typeDaughter->GetBaryonNumber() << 386 G4Fragment((G4int) typeDaughter->GetBaryonNumber(),
368 G4lrint(typeDaughter->GetPDGCharge()/ << 387 (G4int) typeDaughter->GetPDGCharge(), dynamicDaughter->Get4Momentum());
369 dynamicDaughter->Get4Momentum()); <<
370 388
371 if (verboseLevel >= 2) { 389 if (verboseLevel >= 2) {
372 G4cout <<"Dynamic properties of the prefra 390 G4cout <<"Dynamic properties of the prefragment:" <<G4endl;
373 G4cout.precision(6); 391 G4cout.precision(6);
374 dynamicDaughter->DumpInfo(); 392 dynamicDaughter->DumpInfo();
375 G4cout <<"Nuclear properties of the prefra 393 G4cout <<"Nuclear properties of the prefragment:" <<G4endl;
376 G4cout <<theFragment <<G4endl; 394 G4cout <<theFragment <<G4endl;
377 } 395 }
378 396
379 G4ReactionProductVector* products = 397 G4ReactionProductVector* products =
380 theExcitationHandler->Br 398 theExcitationHandler->BreakItUp(*theFragment);
381 delete theFragment; 399 delete theFragment;
382 theFragment = NULL; 400 theFragment = NULL;
383 401
384 G4DynamicParticle* secondary = 0; 402 G4DynamicParticle* secondary = 0;
385 G4ReactionProductVector::iterator iter; 403 G4ReactionProductVector::iterator iter;
386 for (iter = products->begin(); iter != produ 404 for (iter = products->begin(); iter != products->end(); ++iter) {
387 secondary = new G4DynamicParticle((*iter)- 405 secondary = new G4DynamicParticle((*iter)->GetDefinition(),
388 (*iter)->GetTotalEnergy(), (*iter)->GetMom 406 (*iter)->GetTotalEnergy(), (*iter)->GetMomentum());
389 theParticleChange.AddSecondary (secondary, << 407 theParticleChange.AddSecondary (secondary);
390 } 408 }
391 delete products; 409 delete products;
392 <<
393 delete crossSectionP; <<
394 delete crossSectionT; <<
395 410
396 if (verboseLevel >= 2) 411 if (verboseLevel >= 2)
397 G4cout <<"################################ 412 G4cout <<"########################################"
398 <<"################################ 413 <<"########################################"
399 <<G4endl; 414 <<G4endl;
400 415
401 return &theParticleChange; 416 return &theParticleChange;
402 } 417 }
403 418
404 419
405 void G4EMDissociation::PrintWelcomeMessage () 420 void G4EMDissociation::PrintWelcomeMessage ()
406 { 421 {
407 G4cout <<G4endl; 422 G4cout <<G4endl;
408 G4cout <<" ********************************* 423 G4cout <<" ****************************************************************"
409 <<G4endl; 424 <<G4endl;
410 G4cout <<" EM dissociation model for nuclear 425 G4cout <<" EM dissociation model for nuclear-nuclear interactions activated"
411 <<G4endl; 426 <<G4endl;
412 G4cout <<" (Written by QinetiQ Ltd for the E 427 G4cout <<" (Written by QinetiQ Ltd for the European Space Agency)"
413 <<G4endl; 428 <<G4endl;
414 G4cout <<" ********************************* 429 G4cout <<" ****************************************************************"
415 <<G4endl; 430 <<G4endl;
416 G4cout << G4endl; 431 G4cout << G4endl;
417 432
418 return; 433 return;
419 } 434 }
420 435
421 436