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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 "G4Evaporation.hh"
63 #include "G4SystemOfUnits.hh" << 63 #include "G4FermiBreakUp.hh"
>> 64 #include "G4StatMF.hh"
64 #include "G4ParticleDefinition.hh" 65 #include "G4ParticleDefinition.hh"
65 #include "G4LorentzVector.hh" 66 #include "G4LorentzVector.hh"
66 #include "G4PhysicsFreeVector.hh" 67 #include "G4PhysicsFreeVector.hh"
67 #include "G4EMDissociationCrossSection.hh" 68 #include "G4EMDissociationCrossSection.hh"
68 #include "G4Proton.hh" 69 #include "G4Proton.hh"
69 #include "G4Neutron.hh" 70 #include "G4Neutron.hh"
>> 71 #include "G4ParticleTable.hh"
70 #include "G4IonTable.hh" 72 #include "G4IonTable.hh"
>> 73 #include "G4GeneralPhaseSpaceDecay.hh"
71 #include "G4DecayProducts.hh" 74 #include "G4DecayProducts.hh"
72 #include "G4DynamicParticle.hh" 75 #include "G4DynamicParticle.hh"
73 #include "G4Fragment.hh" 76 #include "G4Fragment.hh"
74 #include "G4ReactionProductVector.hh" 77 #include "G4ReactionProductVector.hh"
75 #include "Randomize.hh" 78 #include "Randomize.hh"
76 #include "globals.hh" 79 #include "globals.hh"
77 #include "G4PhysicsModelCatalog.hh" << 80 ////////////////////////////////////////////////////////////////////////////////
78 << 81 //
79 G4EMDissociation::G4EMDissociation() : << 82 G4EMDissociation::G4EMDissociation():G4HadronicInteraction("EMDissociation")
80 G4HadronicInteraction("EMDissociation"), << 83 {
81 secID_projectileDissociation(-1), secID_targ << 84 //
82 { << 85 //
83 // Send message to stdout to advise that the << 86 // Send message to stdout to advise that the G4EMDissociation model is being
84 // used. << 87 // used.
>> 88 //
85 PrintWelcomeMessage(); 89 PrintWelcomeMessage();
86 << 90 //
87 // No de-excitation handler has been supplie << 91 //
88 theExcitationHandler = new G4Exci << 92 // No de-excitation handler has been supplied - define the default handler.
>> 93 //
>> 94 theExcitationHandler = new G4ExcitationHandler;
>> 95 G4Evaporation * theEvaporation = new G4Evaporation;
>> 96 G4FermiBreakUp * theFermiBreakUp = new G4FermiBreakUp;
>> 97 G4StatMF * theMF = new G4StatMF;
>> 98 theExcitationHandler->SetEvaporation(theEvaporation);
>> 99 theExcitationHandler->SetFermiModel(theFermiBreakUp);
>> 100 theExcitationHandler->SetMultiFragmentation(theMF);
>> 101 theExcitationHandler->SetMaxAandZForFermiBreakUp(12, 6);
89 theExcitationHandler->SetMinEForMultiFrag(5. 102 theExcitationHandler->SetMinEForMultiFrag(5.0*MeV);
90 handlerDefinedInternally = true; 103 handlerDefinedInternally = true;
91 << 104 //
92 // This EM dissociation model needs access t << 105 //
93 // G4EMDissociationCrossSection. << 106 // This EM dissociation model needs access to the cross-sections held in
>> 107 // G4EMDissociationCrossSection.
>> 108 //
94 dissociationCrossSection = new G4EMDissociat 109 dissociationCrossSection = new G4EMDissociationCrossSection;
95 thePhotonSpectrum = new G4EMDissociationSpec 110 thePhotonSpectrum = new G4EMDissociationSpectrum;
96 << 111 //
97 // Set the minimum and maximum range for the << 112 //
98 // is in energy per nucleon number). << 113 // Set the minimum and maximum range for the model (despite nomanclature, this
>> 114 // is in energy per nucleon number).
>> 115 //
99 SetMinEnergy(100.0*MeV); 116 SetMinEnergy(100.0*MeV);
100 SetMaxEnergy(500.0*GeV); 117 SetMaxEnergy(500.0*GeV);
101 << 118 //
102 // Set the default verbose level to 0 - no o << 119 //
>> 120 // Set the default verbose level to 0 - no output.
>> 121 //
103 verboseLevel = 0; 122 verboseLevel = 0;
104 <<
105 // Creator model ID for the secondaries crea <<
106 secID_projectileDissociation = G4PhysicsMode <<
107 secID_targetDissociation = G4PhysicsMode <<
108 } 123 }
109 << 124 ////////////////////////////////////////////////////////////////////////////////
110 G4EMDissociation::G4EMDissociation (G4Excitati << 125 //
111 G4HadronicInteraction("EMDissociation"), << 126 G4EMDissociation::G4EMDissociation (G4ExcitationHandler *aExcitationHandler)
112 secID_projectileDissociation(-1), secID_targ <<
113 { 127 {
114 // Send message to stdout to advise that the << 128 //
115 // used. << 129 //
>> 130 // Send message to stdout to advise that the G4EMDissociation model is being
>> 131 // used.
>> 132 //
116 PrintWelcomeMessage(); 133 PrintWelcomeMessage();
117 134
118 theExcitationHandler = aExcitationHandle 135 theExcitationHandler = aExcitationHandler;
119 handlerDefinedInternally = false; 136 handlerDefinedInternally = false;
120 << 137 //
121 // This EM dissociation model needs access t << 138 //
122 // G4EMDissociationCrossSection. << 139 // This EM dissociation model needs access to the cross-sections held in
>> 140 // G4EMDissociationCrossSection.
>> 141 //
123 dissociationCrossSection = new G4EMDissociat 142 dissociationCrossSection = new G4EMDissociationCrossSection;
124 thePhotonSpectrum = new G4EMDissociationSpec 143 thePhotonSpectrum = new G4EMDissociationSpectrum;
125 << 144 //
126 // Set the minimum and maximum range for the << 145 //
127 // is in energy per nucleon number) << 146 // Set the minimum and maximum range for the model (despite nomanclature, this
>> 147 // is in energy per nucleon number).
>> 148 //
128 SetMinEnergy(100.0*MeV); 149 SetMinEnergy(100.0*MeV);
129 SetMaxEnergy(500.0*GeV); 150 SetMaxEnergy(500.0*GeV);
>> 151 //
>> 152 //
>> 153 // Set the default verbose level to 0 - no output.
>> 154 //
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 ()
>> 160 {
139 if (handlerDefinedInternally) delete theExci 161 if (handlerDefinedInternally) delete theExcitationHandler;
140 // delete dissociationCrossSection; << 162 delete dissociationCrossSection;
141 // Cross section deleted by G4CrossSectionRe <<
142 // Bug reported by Gong Ding in Bug Report # <<
143 delete thePhotonSpectrum; 163 delete thePhotonSpectrum;
144 } 164 }
145 << 165 ////////////////////////////////////////////////////////////////////////////////
146 << 166 //
147 G4HadFinalState *G4EMDissociation::ApplyYourse 167 G4HadFinalState *G4EMDissociation::ApplyYourself
148 (const G4HadProjectile &theTrack, G4Nucleus 168 (const G4HadProjectile &theTrack, G4Nucleus &theTarget)
149 { 169 {
150 // The secondaries will be returned in G4Had << 170 //
151 // initialise this. << 171 //
152 << 172 // The secondaries will be returned in G4HadFinalState &theParticleChange -
>> 173 // initialise this.
>> 174 //
153 theParticleChange.Clear(); 175 theParticleChange.Clear();
154 theParticleChange.SetStatusChange(stopAndKil 176 theParticleChange.SetStatusChange(stopAndKill);
155 << 177 //
156 // Get relevant information about the projec << 178 //
157 // energy/nuc, momentum, velocity, Lorentz f << 179 // Get relevant information about the projectile and target (A, Z) and
158 // projectile. << 180 // energy/nuc, momentum, velocity, Lorentz factor and rest-mass of the
159 << 181 // projectile.
>> 182 //
160 const G4ParticleDefinition *definitionP = th 183 const G4ParticleDefinition *definitionP = theTrack.GetDefinition();
161 const G4double AP = definitionP->GetBaryonN 184 const G4double AP = definitionP->GetBaryonNumber();
162 const G4double ZP = definitionP->GetPDGChar 185 const G4double ZP = definitionP->GetPDGCharge();
163 G4LorentzVector pP = theTrack.Get4Momentum() 186 G4LorentzVector pP = theTrack.Get4Momentum();
164 G4double E = theTrack.GetKineticEner 187 G4double E = theTrack.GetKineticEnergy()/AP;
165 G4double MP = theTrack.GetTotalEnergy 188 G4double MP = theTrack.GetTotalEnergy() - E*AP;
166 G4double b = pP.beta(); 189 G4double b = pP.beta();
167 G4double AT = theTarget.GetA_asInt(); 190 G4double AT = theTarget.GetA_asInt();
168 G4double ZT = theTarget.GetZ_asInt(); 191 G4double ZT = theTarget.GetZ_asInt();
169 G4double MT = G4NucleiProperties::Get 192 G4double MT = G4NucleiProperties::GetNuclearMass(AT,ZT);
170 << 193 //
171 // Depending upon the verbosity level, outpu << 194 //
172 // projectile and target << 195 // Depending upon the verbosity level, output the initial information on the
173 if (verboseLevel >= 2) { << 196 // projectile and target.
>> 197 //
>> 198 if (verboseLevel >= 2)
>> 199 {
174 G4cout.precision(6); 200 G4cout.precision(6);
175 G4cout <<"################################ 201 G4cout <<"########################################"
176 <<"################################ 202 <<"########################################"
177 <<G4endl; 203 <<G4endl;
178 G4cout <<"IN G4EMDissociation" <<G4endl; 204 G4cout <<"IN G4EMDissociation" <<G4endl;
179 G4cout <<"Initial projectile A=" <<AP 205 G4cout <<"Initial projectile A=" <<AP
180 <<", Z=" <<ZP 206 <<", Z=" <<ZP
181 <<G4endl; 207 <<G4endl;
182 G4cout <<"Initial target A=" <<AT 208 G4cout <<"Initial target A=" <<AT
183 <<", Z=" <<ZT 209 <<", Z=" <<ZT
184 <<G4endl; 210 <<G4endl;
185 G4cout <<"Projectile momentum and Energy/n 211 G4cout <<"Projectile momentum and Energy/nuc = " <<pP <<" ," <<E <<G4endl;
186 } 212 }
187 << 213 //
188 // Initialise the variables which will be us << 214 //
189 // to boost the secondaries from the interac << 215 // Initialise the variables which will be used with the phase-space decay and
190 << 216 // to boost the secondaries from the interaction.
>> 217 //
191 G4ParticleDefinition *typeNucleon = NULL; 218 G4ParticleDefinition *typeNucleon = NULL;
192 G4ParticleDefinition *typeDaughter = NULL; 219 G4ParticleDefinition *typeDaughter = NULL;
193 G4double Eg = 0.0; 220 G4double Eg = 0.0;
194 G4double mass = 0.0; 221 G4double mass = 0.0;
195 G4ThreeVector boost = G4ThreeVector(0.0, 0.0 222 G4ThreeVector boost = G4ThreeVector(0.0, 0.0, 0.0);
196 << 223 //
197 // Determine the cross-sections at the giant << 224 //
198 // resonance energies for the projectile and << 225 // Determine the cross-sections at the giant dipole and giant quadrupole
199 // initially provided in the G4PhysicsFreeVe << 226 // resonance energies for the projectile and then target. The information is
200 // and E2 fields. These are then summed. << 227 // initially provided in the G4PhysicsFreeVector individually for the E1
201 << 228 // and E2 fields. These are then summed.
>> 229 //
202 G4double bmin = thePhotonSpectrum->GetCloses 230 G4double bmin = thePhotonSpectrum->GetClosestApproach(AP, ZP, AT, ZT, b);
203 G4PhysicsFreeVector *crossSectionP = dissoci 231 G4PhysicsFreeVector *crossSectionP = dissociationCrossSection->
204 GetCrossSectionForProjectile(AP, ZP, AT, Z 232 GetCrossSectionForProjectile(AP, ZP, AT, ZT, b, bmin);
205 G4PhysicsFreeVector *crossSectionT = dissoci 233 G4PhysicsFreeVector *crossSectionT = dissociationCrossSection->
206 GetCrossSectionForTarget(AP, ZP, AT, ZT, b 234 GetCrossSectionForTarget(AP, ZP, AT, ZT, b, bmin);
207 235
208 G4double totCrossSectionP = (*crossSectionP) 236 G4double totCrossSectionP = (*crossSectionP)[0]+(*crossSectionP)[1];
209 G4double totCrossSectionT = (*crossSectionT) 237 G4double totCrossSectionT = (*crossSectionT)[0]+(*crossSectionT)[1];
210 << 238 //
211 // Now sample whether the interaction involv << 239 //
212 // or the target. << 240 // Now sample whether the interaction involved EM dissociation of the projectile
213 << 241 // or the target.
214 G4int secID = -1; // Creator model ID for t << 242 //
215 if (G4UniformRand() < 243 if (G4UniformRand() <
216 totCrossSectionP / (totCrossSectionP + tot << 244 totCrossSectionP / (totCrossSectionP + totCrossSectionT))
217 << 245 {
218 // It was the projectile which underwent E << 246 //
219 // boost to be applied to the secondaries, << 247 //
220 // neutron was ejected. Then determine th << 248 // It was the projectile which underwent EM dissociation. Define the Lorentz
221 // which passed from the target nucleus .. << 249 // boost to be applied to the secondaries, and sample whether a proton or a
222 // excitation of the projectile. << 250 // neutron was ejected. Then determine the energy of the virtual gamma ray
223 << 251 // which passed from the target nucleus ... this will be used to define the
224 secID = secID_projectileDissociation; << 252 // excitation of the projectile.
>> 253 //
225 mass = MP; 254 mass = MP;
226 if (G4UniformRand() < dissociationCrossSec 255 if (G4UniformRand() < dissociationCrossSection->
227 GetWilsonProbabilityForProtonDissociatio 256 GetWilsonProbabilityForProtonDissociation (AP, ZP))
228 { 257 {
229 if (verboseLevel >= 2) 258 if (verboseLevel >= 2)
230 G4cout <<"Projectile underwent EM diss 259 G4cout <<"Projectile underwent EM dissociation producing a proton"
231 <<G4endl; 260 <<G4endl;
232 typeNucleon = G4Proton::ProtonDefinition 261 typeNucleon = G4Proton::ProtonDefinition();
233 typeDaughter = G4IonTable::GetIonTable() << 262 typeDaughter = G4ParticleTable::GetParticleTable()->
234 GetIon((G4int) ZP-1, (G4int) AP-1, 0.0); 263 GetIon((G4int) ZP-1, (G4int) AP-1, 0.0);
235 } 264 }
236 else 265 else
237 { 266 {
238 if (verboseLevel >= 2) 267 if (verboseLevel >= 2)
239 G4cout <<"Projectile underwent EM diss 268 G4cout <<"Projectile underwent EM dissociation producing a neutron"
240 <<G4endl; 269 <<G4endl;
241 typeNucleon = G4Neutron::NeutronDefiniti 270 typeNucleon = G4Neutron::NeutronDefinition();
242 typeDaughter = G4IonTable::GetIonTable() << 271 typeDaughter = G4ParticleTable::GetParticleTable()->
243 GetIon((G4int) ZP, (G4int) AP-1, 0.0); 272 GetIon((G4int) ZP, (G4int) AP-1, 0.0);
244 } 273 }
245 if (G4UniformRand() < (*crossSectionP)[0]/ 274 if (G4UniformRand() < (*crossSectionP)[0]/totCrossSectionP)
246 { 275 {
247 Eg = crossSectionP->GetLowEdgeEnergy(0); 276 Eg = crossSectionP->GetLowEdgeEnergy(0);
248 if (verboseLevel >= 2) 277 if (verboseLevel >= 2)
249 G4cout <<"Transition type was E1" <<G4 278 G4cout <<"Transition type was E1" <<G4endl;
250 } 279 }
251 else 280 else
252 { 281 {
253 Eg = crossSectionP->GetLowEdgeEnergy(1); 282 Eg = crossSectionP->GetLowEdgeEnergy(1);
254 if (verboseLevel >= 2) 283 if (verboseLevel >= 2)
255 G4cout <<"Transition type was E2" <<G4 284 G4cout <<"Transition type was E2" <<G4endl;
256 } 285 }
257 << 286 //
258 // We need to define a Lorentz vector with << 287 //
259 // energy includes the projectile and virt << 288 // We need to define a Lorentz vector with the original momentum, but total
260 // to calculate the boost required for the << 289 // energy includes the projectile and virtual gamma. This is then used
261 << 290 // to calculate the boost required for the secondaries.
262 pP.setE( std::sqrt( pP.vect().mag2() + (ma << 291 //
>> 292 pP.setE(pP.e()+Eg);
263 boost = pP.findBoostToCM(); 293 boost = pP.findBoostToCM();
264 } 294 }
265 else 295 else
266 { 296 {
267 // It was the target which underwent EM di << 297 //
268 // proton or a neutron was ejected. Then << 298 //
269 // gamma ray which passed from the project << 299 // It was the target which underwent EM dissociation. Sample whether a
270 // define the excitation of the target. << 300 // proton or a neutron was ejected. Then determine the energy of the virtual
271 << 301 // gamma ray which passed from the projectile nucleus ... this will be used to
272 secID = secID_targetDissociation; << 302 // define the excitation of the target.
>> 303 //
273 mass = MT; 304 mass = MT;
274 if (G4UniformRand() < dissociationCrossSec 305 if (G4UniformRand() < dissociationCrossSection->
275 GetWilsonProbabilityForProtonDissociatio 306 GetWilsonProbabilityForProtonDissociation (AT, ZT))
276 { 307 {
277 if (verboseLevel >= 2) 308 if (verboseLevel >= 2)
278 G4cout <<"Target underwent EM dissocia 309 G4cout <<"Target underwent EM dissociation producing a proton"
279 <<G4endl; 310 <<G4endl;
280 typeNucleon = G4Proton::ProtonDefinition 311 typeNucleon = G4Proton::ProtonDefinition();
281 typeDaughter = G4IonTable::GetIonTable() << 312 typeDaughter = G4ParticleTable::GetParticleTable()->
282 GetIon((G4int) ZT-1, (G4int) AT-1, 0.0); 313 GetIon((G4int) ZT-1, (G4int) AT-1, 0.0);
283 } 314 }
284 else 315 else
285 { 316 {
286 if (verboseLevel >= 2) 317 if (verboseLevel >= 2)
287 G4cout <<"Target underwent EM dissocia 318 G4cout <<"Target underwent EM dissociation producing a neutron"
288 <<G4endl; 319 <<G4endl;
289 typeNucleon = G4Neutron::NeutronDefiniti 320 typeNucleon = G4Neutron::NeutronDefinition();
290 typeDaughter = G4IonTable::GetIonTable() << 321 typeDaughter = G4ParticleTable::GetParticleTable()->
291 GetIon((G4int) ZT, (G4int) AT-1, 0.0); 322 GetIon((G4int) ZT, (G4int) AT-1, 0.0);
292 } 323 }
293 if (G4UniformRand() < (*crossSectionT)[0]/ 324 if (G4UniformRand() < (*crossSectionT)[0]/totCrossSectionT)
294 { 325 {
295 Eg = crossSectionT->GetLowEdgeEnergy(0); 326 Eg = crossSectionT->GetLowEdgeEnergy(0);
296 if (verboseLevel >= 2) 327 if (verboseLevel >= 2)
297 G4cout <<"Transition type was E1" <<G4 328 G4cout <<"Transition type was E1" <<G4endl;
298 } 329 }
299 else 330 else
300 { 331 {
301 Eg = crossSectionT->GetLowEdgeEnergy(1); 332 Eg = crossSectionT->GetLowEdgeEnergy(1);
302 if (verboseLevel >= 2) 333 if (verboseLevel >= 2)
303 G4cout <<"Transition type was E2" <<G4 334 G4cout <<"Transition type was E2" <<G4endl;
304 } 335 }
305 << 336 //
306 // Add the projectile to theParticleChange << 337 //
307 // not-so-virtual gamma-ray. Not that at << 338 // Add the projectile to theParticleChange, less the energy of the
308 // is transferred between the projectile a << 339 // not-so-virtual gamma-ray. Not that at the moment, no lateral momentum
309 << 340 // is transferred between the projectile and target nuclei.
>> 341 //
310 G4ThreeVector v = pP.vect(); 342 G4ThreeVector v = pP.vect();
311 v.setMag(1.0); 343 v.setMag(1.0);
312 G4DynamicParticle *changedP = new G4Dynami << 344 G4DynamicParticle *changedP = new G4DynamicParticle
313 theParticleChange.AddSecondary (changedP, << 345 (const_cast<G4ParticleDefinition*>(definitionP), v, E*AP-Eg);
>> 346 theParticleChange.AddSecondary (changedP);
314 if (verboseLevel >= 2) 347 if (verboseLevel >= 2)
315 { 348 {
316 G4cout <<"Projectile change:" <<G4endl; 349 G4cout <<"Projectile change:" <<G4endl;
317 changedP->DumpInfo(); 350 changedP->DumpInfo();
318 } 351 }
319 } 352 }
320 << 353 //
321 // Perform a two-body decay based on the res << 354 //
322 // gamma-ray, and the masses of the daughter << 355 // Perform a two-body decay based on the restmass energy of the parent and
323 // the nucles, the angular distribution is s << 356 // gamma-ray, and the masses of the daughters. In the frame of reference of
324 // the nucleon and secondary nucleus are boo << 357 // the nucles, the angular distribution is sampled isotropically, but the
325 // projectile. << 358 // the nucleon and secondary nucleus are boosted if they've come from the
326 << 359 // projectile.
>> 360 //
327 G4double e = mass + Eg; 361 G4double e = mass + Eg;
328 G4double mass1 = typeNucleon->GetPDGMass(); << 362 G4double m1 = typeNucleon->GetPDGMass();
329 G4double mass2 = typeDaughter->GetPDGMass(); << 363 G4double m2 = typeDaughter->GetPDGMass();
330 G4double pp = (e+mass1+mass2)*(e+mass1-mass2 << 364 G4double pp = (e+m1+m2)*(e+m1-m2)*(e-m1+m2)*(e-m1-m2)/(4.0*e*e);
331 (e-mass1+mass2)*(e-mass1-mass2 << 365 if (pp < 0.0)
332 if (pp < 0.0) { << 366 {
333 pp = 1.0*eV; 367 pp = 1.0*eV;
334 // if (verboseLevel >`= 1) 368 // if (verboseLevel >`= 1)
335 // { 369 // {
336 // G4cout <<"IN G4EMDissociation::ApplyYo 370 // G4cout <<"IN G4EMDissociation::ApplyYoursef" <<G4endl;
337 // G4cout <<"Error in mass of secondaries 371 // G4cout <<"Error in mass of secondaries compared with primary:" <<G4endl;
338 // G4cout <<"Rest mass of primary = 372 // G4cout <<"Rest mass of primary = " <<mass <<" MeV" <<G4endl;
339 // G4cout <<"Virtual gamma energy = 373 // G4cout <<"Virtual gamma energy = " <<Eg <<" MeV" <<G4endl;
340 // G4cout <<"Rest mass of secondary #1 = << 374 // G4cout <<"Rest mass of secondary #1 = " <<m1 <<" MeV" <<G4endl;
341 // G4cout <<"Rest mass of secondary #2 = << 375 // G4cout <<"Rest mass of secondary #2 = " <<m2 <<" MeV" <<G4endl;
342 // } 376 // }
343 } 377 }
344 else 378 else
345 pp = std::sqrt(pp); 379 pp = std::sqrt(pp);
346 G4double costheta = 2.*G4UniformRand()-1.0; 380 G4double costheta = 2.*G4UniformRand()-1.0;
347 G4double sintheta = std::sqrt((1.0 - costhet 381 G4double sintheta = std::sqrt((1.0 - costheta)*(1.0 + costheta));
348 G4double phi = 2.0*pi*G4UniformRand()*r 382 G4double phi = 2.0*pi*G4UniformRand()*rad;
349 G4ThreeVector direction(sintheta*std::cos(ph 383 G4ThreeVector direction(sintheta*std::cos(phi),sintheta*std::sin(phi),costheta);
350 G4DynamicParticle *dynamicNucleon = 384 G4DynamicParticle *dynamicNucleon =
351 new G4DynamicParticle(typeNucleon, directi 385 new G4DynamicParticle(typeNucleon, direction*pp);
352 dynamicNucleon->Set4Momentum(dynamicNucleon- 386 dynamicNucleon->Set4Momentum(dynamicNucleon->Get4Momentum().boost(-boost));
353 G4DynamicParticle *dynamicDaughter = 387 G4DynamicParticle *dynamicDaughter =
354 new G4DynamicParticle(typeDaughter, -direc 388 new G4DynamicParticle(typeDaughter, -direction*pp);
355 dynamicDaughter->Set4Momentum(dynamicDaughte 389 dynamicDaughter->Set4Momentum(dynamicDaughter->Get4Momentum().boost(-boost));
356 << 390 //
357 // The "decay" products have to be transferr << 391 //
358 // Furthermore, the residual nucleus should << 392 // The "decay" products have to be transferred to the G4HadFinalState object.
359 << 393 // Furthermore, the residual nucleus should be de-excited.
360 theParticleChange.AddSecondary (dynamicNucle << 394 //
361 if (verboseLevel >= 2) { << 395 theParticleChange.AddSecondary (dynamicNucleon);
>> 396 if (verboseLevel >= 2)
>> 397 {
362 G4cout <<"Nucleon from the EMD process:" < 398 G4cout <<"Nucleon from the EMD process:" <<G4endl;
363 dynamicNucleon->DumpInfo(); 399 dynamicNucleon->DumpInfo();
364 } 400 }
365 401
366 G4Fragment* theFragment = new << 402 G4Fragment *theFragment = new
367 G4Fragment(typeDaughter->GetBaryonNumber() << 403 G4Fragment((G4int) typeDaughter->GetBaryonNumber(),
368 G4lrint(typeDaughter->GetPDGCharge()/ << 404 (G4int) typeDaughter->GetPDGCharge(), dynamicDaughter->Get4Momentum());
369 dynamicDaughter->Get4Momentum()); << 405 if (verboseLevel >= 2)
370 << 406 {
371 if (verboseLevel >= 2) { <<
372 G4cout <<"Dynamic properties of the prefra 407 G4cout <<"Dynamic properties of the prefragment:" <<G4endl;
373 G4cout.precision(6); 408 G4cout.precision(6);
374 dynamicDaughter->DumpInfo(); 409 dynamicDaughter->DumpInfo();
375 G4cout <<"Nuclear properties of the prefra 410 G4cout <<"Nuclear properties of the prefragment:" <<G4endl;
376 G4cout <<theFragment <<G4endl; 411 G4cout <<theFragment <<G4endl;
377 } 412 }
378 << 413 G4ReactionProductVector *products =
379 G4ReactionProductVector* products = << 414 theExcitationHandler->BreakItUp(*theFragment);
380 theExcitationHandler->Br <<
381 delete theFragment; 415 delete theFragment;
382 theFragment = NULL; 416 theFragment = NULL;
383 417
384 G4DynamicParticle* secondary = 0; <<
385 G4ReactionProductVector::iterator iter; 418 G4ReactionProductVector::iterator iter;
386 for (iter = products->begin(); iter != produ << 419 for (iter = products->begin(); iter != products->end(); ++iter)
387 secondary = new G4DynamicParticle((*iter)- << 420 {
388 (*iter)->GetTotalEnergy(), (*iter)->GetMom << 421 G4DynamicParticle *secondary =
389 theParticleChange.AddSecondary (secondary, << 422 new G4DynamicParticle((*iter)->GetDefinition(),
>> 423 (*iter)->GetTotalEnergy(), (*iter)->GetMomentum());
>> 424 theParticleChange.AddSecondary (secondary);
390 } 425 }
391 delete products; <<
392 <<
393 delete crossSectionP; <<
394 delete crossSectionT; <<
395 426
396 if (verboseLevel >= 2) 427 if (verboseLevel >= 2)
397 G4cout <<"################################ 428 G4cout <<"########################################"
398 <<"################################ 429 <<"########################################"
399 <<G4endl; 430 <<G4endl;
400 431
401 return &theParticleChange; 432 return &theParticleChange;
402 } 433 }
403 << 434 ////////////////////////////////////////////////////////////////////////////////
404 << 435 //
405 void G4EMDissociation::PrintWelcomeMessage () 436 void G4EMDissociation::PrintWelcomeMessage ()
406 { 437 {
407 G4cout <<G4endl; 438 G4cout <<G4endl;
408 G4cout <<" ********************************* 439 G4cout <<" ****************************************************************"
409 <<G4endl; 440 <<G4endl;
410 G4cout <<" EM dissociation model for nuclear 441 G4cout <<" EM dissociation model for nuclear-nuclear interactions activated"
411 <<G4endl; 442 <<G4endl;
412 G4cout <<" (Written by QinetiQ Ltd for the E 443 G4cout <<" (Written by QinetiQ Ltd for the European Space Agency)"
413 <<G4endl; 444 <<G4endl;
414 G4cout <<" ********************************* 445 G4cout <<" ****************************************************************"
415 <<G4endl; 446 <<G4endl;
416 G4cout << G4endl; 447 G4cout << G4endl;
417 448
418 return; 449 return;
419 } 450 }
420 << 451 ////////////////////////////////////////////////////////////////////////////////
>> 452 //
421 453