source: trunk/source/processes/hadronic/models/qmd/src/G4QMDReaction.cc@ 1357

Last change on this file since 1357 was 1347, checked in by garnier, 15 years ago

geant4 tag 9.4
File size: 25.8 KB
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25//
26// 080505 Fixed and changed sampling method of impact parameter by T. Koi
27// 080602 Fix memory leaks by T. Koi
28// 080612 Delete unnecessary dependency and unused functions
29// Change criterion of reaction by T. Koi
30// 081107 Add UnUseGEM (then use the default channel of G4Evaporation)
31// UseFrag (chage criterion of a inelastic reaction)
32// Fix bug in nucleon projectiles by T. Koi
33// 090122 Be8 -> Alpha + Alpha
34// 090331 Change member shenXS and genspaXS object to pointer
35// 091119 Fix for incidence of neutral particles
36//
37#include "G4QMDReaction.hh"
38#include "G4QMDNucleus.hh"
39#include "G4QMDGroundStateNucleus.hh"
40
41#include "G4NistManager.hh"
42
43G4QMDReaction::G4QMDReaction()
44: system ( NULL )
45, deltaT ( 1 ) // in fsec (c=1)
46, maxTime ( 100 ) // will have maxTime-th time step
47, envelopF ( 1.05 ) // 10% for Peripheral reactions
48, gem ( true )
49, frag ( false )
50{
51
52 //090331
53 shenXS = new G4IonsShenCrossSection();
54 //genspaXS = new G4GeneralSpaceNNCrossSection();
55 piNucXS = new G4PiNuclearCrossSection();
56 meanField = new G4QMDMeanField();
57 collision = new G4QMDCollision();
58
59 excitationHandler = new G4ExcitationHandler;
60 evaporation = new G4Evaporation;
61 excitationHandler->SetEvaporation( evaporation );
62 setEvaporationCh();
63}
64
65
66
67G4QMDReaction::~G4QMDReaction()
68{
69 delete evaporation;
70 delete excitationHandler;
71 delete collision;
72 delete meanField;
73}
74
75
76
77G4HadFinalState* G4QMDReaction::ApplyYourself( const G4HadProjectile & projectile , G4Nucleus & target )
78{
79 //G4cout << "G4QMDReaction::ApplyYourself" << G4endl;
80
81 theParticleChange.Clear();
82
83 system = new G4QMDSystem;
84
85 G4int proj_Z = 0;
86 G4int proj_A = 0;
87 G4ParticleDefinition* proj_pd = ( G4ParticleDefinition* ) projectile.GetDefinition();
88 if ( proj_pd->GetParticleType() == "nucleus" )
89 {
90 proj_Z = proj_pd->GetAtomicNumber();
91 proj_A = proj_pd->GetAtomicMass();
92 }
93 else
94 {
95 proj_Z = (int)( proj_pd->GetPDGCharge()/eplus );
96 proj_A = 1;
97 }
98 G4int targ_Z = int ( target.GetZ() + 0.5 );
99 G4int targ_A = int ( target.GetN() + 0.5 );
100 G4ParticleDefinition* targ_pd = G4ParticleTable::GetParticleTable()->GetIon( targ_Z , targ_A , 0.0 );
101
102
103 G4NistManager* nistMan = G4NistManager::Instance();
104// G4Element* G4NistManager::FindOrBuildElement( targ_Z );
105
106 const G4DynamicParticle* proj_dp = new G4DynamicParticle ( proj_pd , projectile.Get4Momentum() );
107 const G4Element* targ_ele = nistMan->FindOrBuildElement( targ_Z );
108 G4double aTemp = projectile.GetMaterial()->GetTemperature();
109
110 //090331
111
112 G4VCrossSectionDataSet* theXS = shenXS;
113
114 if ( proj_pd->GetParticleType() == "meson" ) theXS = piNucXS;
115
116 G4double xs_0 = theXS->GetCrossSection ( proj_dp , targ_ele , aTemp );
117
118 //G4double xs_0 = genspaXS->GetCrossSection ( proj_dp , targ_ele , aTemp );
119 G4double bmax_0 = std::sqrt( xs_0 / pi );
120 //std::cout << "bmax_0 in fm (fermi) " << bmax_0/fermi << std::endl;
121
122 //delete proj_dp;
123
124 G4bool elastic = true;
125
126 std::vector< G4QMDNucleus* > nucleuses; // Secondary nuceluses
127 G4ThreeVector boostToReac; // ReactionSystem (CM or NN);
128 G4ThreeVector boostBackToLAB; // Reaction System to LAB;
129
130 G4LorentzVector targ4p( G4ThreeVector( 0.0 ) , targ_pd->GetPDGMass()/GeV );
131 G4ThreeVector boostLABtoCM = targ4p.findBoostToCM( proj_dp->Get4Momentum()/GeV ); // CM of target and proj;
132
133 G4double p1 = proj_dp->GetMomentum().mag()/GeV/proj_A;
134 G4double m1 = proj_dp->GetDefinition()->GetPDGMass()/GeV/proj_A;
135 G4double e1 = std::sqrt( p1*p1 + m1*m1 );
136 G4double e2 = targ_pd->GetPDGMass()/GeV/targ_A;
137 G4double beta_nn = -p1 / ( e1+e2 );
138
139 G4ThreeVector boostLABtoNN ( 0. , 0. , beta_nn ); // CM of NN;
140
141 G4double beta_nncm = ( - boostLABtoCM.beta() + boostLABtoNN.beta() ) / ( 1 - boostLABtoCM.beta() * boostLABtoNN.beta() ) ;
142
143 //std::cout << targ4p << std::endl;
144 //std::cout << proj_dp->Get4Momentum()<< std::endl;
145 //std::cout << beta_nncm << std::endl;
146 G4ThreeVector boostNNtoCM( 0. , 0. , beta_nncm ); //
147 G4ThreeVector boostCMtoNN( 0. , 0. , -beta_nncm ); //
148
149 boostToReac = boostLABtoNN;
150 boostBackToLAB = -boostLABtoNN;
151
152 delete proj_dp;
153
154 while ( elastic )
155 {
156
157// impact parameter
158 //G4double bmax = 1.05*(bmax_0/fermi); // 10% for Peripheral reactions
159 G4double bmax = envelopF*(bmax_0/fermi);
160 G4double b = bmax * std::sqrt ( G4UniformRand() );
161//071112
162 //G4double b = 0;
163 //G4double b = bmax;
164 //G4double b = bmax/1.05 * 0.7 * G4UniformRand();
165
166 //G4cout << "G4QMDRESULT bmax_0 = " << bmax_0/fermi << " fm, bmax = " << bmax << " fm , b = " << b << " fm " << G4endl;
167
168 G4double plab = projectile.GetTotalMomentum()/GeV;
169 G4double elab = ( projectile.GetKineticEnergy() + proj_pd->GetPDGMass() + targ_pd->GetPDGMass() )/GeV;
170
171 calcOffSetOfCollision( b , proj_pd , targ_pd , plab , elab , bmax , boostCMtoNN );
172
173// Projectile
174 G4LorentzVector proj4pLAB = projectile.Get4Momentum()/GeV;
175
176 G4QMDGroundStateNucleus* proj(NULL);
177 if ( projectile.GetDefinition()->GetParticleType() == "nucleus"
178 || projectile.GetDefinition()->GetParticleName() == "proton"
179 || projectile.GetDefinition()->GetParticleName() == "neutron" )
180 {
181
182 proj_Z = proj_pd->GetAtomicNumber();
183 proj_A = proj_pd->GetAtomicMass();
184
185 proj = new G4QMDGroundStateNucleus( proj_Z , proj_A );
186 //proj->ShowParticipants();
187
188
189 meanField->SetSystem ( proj );
190 proj->SetTotalPotential( meanField->GetTotalPotential() );
191 proj->CalEnergyAndAngularMomentumInCM();
192
193 }
194
195// Target
196 G4int iz = int ( target.GetZ() );
197 G4int ia = int ( target.GetN() );
198
199 G4QMDGroundStateNucleus* targ = new G4QMDGroundStateNucleus( iz , ia );
200
201 meanField->SetSystem (targ );
202 targ->SetTotalPotential( meanField->GetTotalPotential() );
203 targ->CalEnergyAndAngularMomentumInCM();
204
205 //G4LorentzVector targ4p( G4ThreeVector( 0.0 ) , targ->GetNuclearMass()/GeV );
206// Boost Vector to CM
207 //boostToCM = targ4p.findBoostToCM( proj4pLAB );
208
209// Target
210 for ( G4int i = 0 ; i < targ->GetTotalNumberOfParticipant() ; i++ )
211 {
212
213 G4ThreeVector p0 = targ->GetParticipant( i )->GetMomentum();
214 G4ThreeVector r0 = targ->GetParticipant( i )->GetPosition();
215
216 G4ThreeVector p ( p0.x() + coulomb_collision_px_targ
217 , p0.y()
218 , p0.z() * coulomb_collision_gamma_targ + coulomb_collision_pz_targ );
219
220 G4ThreeVector r ( r0.x() + coulomb_collision_rx_targ
221 , r0.y()
222 , r0.z() / coulomb_collision_gamma_targ + coulomb_collision_rz_targ );
223
224 system->SetParticipant( new G4QMDParticipant( targ->GetParticipant( i )->GetDefinition() , p , r ) );
225 system->GetParticipant( i )->SetTarget();
226
227 }
228
229 G4LorentzVector proj4pCM = CLHEP::boostOf ( proj4pLAB , boostToReac );
230 G4LorentzVector targ4pCM = CLHEP::boostOf ( targ4p , boostToReac );
231
232// Projectile
233 if ( proj != NULL )
234 {
235
236// projectile is nucleus
237
238 for ( G4int i = 0 ; i < proj->GetTotalNumberOfParticipant() ; i++ )
239 {
240
241 G4ThreeVector p0 = proj->GetParticipant( i )->GetMomentum();
242 G4ThreeVector r0 = proj->GetParticipant( i )->GetPosition();
243
244 G4ThreeVector p ( p0.x() + coulomb_collision_px_proj
245 , p0.y()
246 , p0.z() * coulomb_collision_gamma_proj + coulomb_collision_pz_proj );
247
248 G4ThreeVector r ( r0.x() + coulomb_collision_rx_proj
249 , r0.y()
250 , r0.z() / coulomb_collision_gamma_proj + coulomb_collision_rz_proj );
251
252 system->SetParticipant( new G4QMDParticipant( proj->GetParticipant( i )->GetDefinition() , p , r ) );
253 system->GetParticipant ( i + targ->GetTotalNumberOfParticipant() )->SetProjectile();
254 }
255
256 }
257 else
258 {
259
260// projectile is particle
261
262 // avoid multiple set in "elastic" loop
263 if ( system->GetTotalNumberOfParticipant() == targ->GetTotalNumberOfParticipant() )
264 {
265
266 G4int i = targ->GetTotalNumberOfParticipant();
267
268 G4ThreeVector p0( 0 );
269 G4ThreeVector r0( 0 );
270
271 G4ThreeVector p ( p0.x() + coulomb_collision_px_proj
272 , p0.y()
273 , p0.z() * coulomb_collision_gamma_proj + coulomb_collision_pz_proj );
274
275 G4ThreeVector r ( r0.x() + coulomb_collision_rx_proj
276 , r0.y()
277 , r0.z() / coulomb_collision_gamma_proj + coulomb_collision_rz_proj );
278
279 system->SetParticipant( new G4QMDParticipant( (G4ParticleDefinition*)projectile.GetDefinition() , p , r ) );
280 // This is not important becase only 1 projectile particle.
281 system->GetParticipant ( i )->SetProjectile();
282 }
283
284 }
285 //system->ShowParticipants();
286
287 delete targ;
288 delete proj;
289
290 meanField->SetSystem ( system );
291 collision->SetMeanField ( meanField );
292
293// Time Evolution
294 //std::cout << "Start time evolution " << std::endl;
295 //system->ShowParticipants();
296 for ( G4int i = 0 ; i < maxTime ; i++ )
297 {
298 //G4cout << " do Paropagate " << i << " th time step. " << G4endl;
299 meanField->DoPropagation( deltaT );
300 //system->ShowParticipants();
301 collision->CalKinematicsOfBinaryCollisions( deltaT );
302
303 if ( i / 10 * 10 == i )
304 {
305 //G4cout << i << " th time step. " << G4endl;
306 //system->ShowParticipants();
307 }
308 //system->ShowParticipants();
309 }
310 //system->ShowParticipants();
311
312
313 //std::cout << "Doing Cluster Judgment " << std::endl;
314
315 nucleuses = meanField->DoClusterJudgment();
316
317// Elastic Judgment
318
319 G4int numberOfSecondary = int ( nucleuses.size() ) + system->GetTotalNumberOfParticipant();
320
321 G4int sec_a_Z = 0;
322 G4int sec_a_A = 0;
323 G4ParticleDefinition* sec_a_pd = NULL;
324 G4int sec_b_Z = 0;
325 G4int sec_b_A = 0;
326 G4ParticleDefinition* sec_b_pd = NULL;
327
328 if ( numberOfSecondary == 2 )
329 {
330
331 G4bool elasticLike_system = false;
332 if ( nucleuses.size() == 2 )
333 {
334
335 sec_a_Z = nucleuses[0]->GetAtomicNumber();
336 sec_a_A = nucleuses[0]->GetMassNumber();
337 sec_b_Z = nucleuses[1]->GetAtomicNumber();
338 sec_b_A = nucleuses[1]->GetMassNumber();
339
340 if ( ( sec_a_Z == proj_Z && sec_a_A == proj_A && sec_b_Z == targ_Z && sec_b_A == targ_A )
341 || ( sec_a_Z == targ_Z && sec_a_A == targ_A && sec_b_Z == proj_Z && sec_b_A == proj_A ) )
342 {
343 elasticLike_system = true;
344 }
345
346 }
347 else if ( nucleuses.size() == 1 )
348 {
349
350 sec_a_Z = nucleuses[0]->GetAtomicNumber();
351 sec_a_A = nucleuses[0]->GetMassNumber();
352 sec_b_pd = system->GetParticipant( 0 )->GetDefinition();
353
354 if ( ( sec_a_Z == proj_Z && sec_a_A == proj_A && sec_b_pd == targ_pd )
355 || ( sec_a_Z == targ_Z && sec_a_A == targ_A && sec_b_pd == proj_pd ) )
356 {
357 elasticLike_system = true;
358 }
359
360 }
361 else
362 {
363
364 sec_a_pd = system->GetParticipant( 0 )->GetDefinition();
365 sec_b_pd = system->GetParticipant( 1 )->GetDefinition();
366
367 if ( ( sec_a_pd == proj_pd && sec_b_pd == targ_pd )
368 || ( sec_a_pd == targ_pd && sec_b_pd == proj_pd ) )
369 {
370 elasticLike_system = true;
371 }
372
373 }
374
375 if ( elasticLike_system == true )
376 {
377
378 G4bool elasticLike_energy = true;
379// Cal ExcitationEnergy
380 for ( G4int i = 0 ; i < int ( nucleuses.size() ) ; i++ )
381 {
382
383 //meanField->SetSystem( nucleuses[i] );
384 meanField->SetNucleus( nucleuses[i] );
385 //nucleuses[i]->SetTotalPotential( meanField->GetTotalPotential() );
386 //nucleuses[i]->CalEnergyAndAngularMomentumInCM();
387
388 if ( nucleuses[i]->GetExcitationEnergy()*GeV > 1.0*MeV ) elasticLike_energy = false;
389
390 }
391
392// Check Collision
393 G4bool withCollision = true;
394 if ( system->GetNOCollision() == 0 ) withCollision = false;
395
396// Final judegement for Inelasitc or Elastic;
397//
398// ElasticLike without Collision
399 //if ( elasticLike_energy == true && withCollision == false ) elastic = true; // ielst = 0
400// ElasticLike with Collision
401 //if ( elasticLike_energy == true && withCollision == true ) elastic = true; // ielst = 1
402// InelasticLike without Collision
403 //if ( elasticLike_energy == false ) elastic = false; // ielst = 2
404 if ( frag == true )
405 if ( elasticLike_energy == false ) elastic = false;
406// InelasticLike with Collision
407 if ( elasticLike_energy == false && withCollision == true ) elastic = false; // ielst = 3
408
409 }
410
411 }
412 else
413 {
414
415// numberOfSecondary != 2
416 elastic = false;
417
418 }
419
420//071115
421 //G4cout << elastic << G4endl;
422 // if elastic is true try again from sampling of impact parameter
423
424 if ( elastic == true )
425 {
426 // delete this nucleues
427 for ( std::vector< G4QMDNucleus* >::iterator
428 it = nucleuses.begin() ; it != nucleuses.end() ; it++ )
429 {
430 delete *it;
431 }
432 nucleuses.clear();
433 }
434 }
435
436
437// Statical Decay Phase
438
439 for ( std::vector< G4QMDNucleus* >::iterator it
440 = nucleuses.begin() ; it != nucleuses.end() ; it++ )
441 {
442
443/*
444 std::cout << "G4QMDRESULT "
445 << (*it)->GetAtomicNumber()
446 << " "
447 << (*it)->GetMassNumber()
448 << " "
449 << (*it)->Get4Momentum()
450 << " "
451 << (*it)->Get4Momentum().vect()
452 << " "
453 << (*it)->Get4Momentum().restMass()
454 << " "
455 << (*it)->GetNuclearMass()/GeV
456 << std::endl;
457*/
458
459 meanField->SetNucleus ( *it );
460
461 if ( (*it)->GetAtomicNumber() == 0 // neutron cluster
462 || (*it)->GetAtomicNumber() == (*it)->GetMassNumber() ) // proton cluster
463 {
464 // push back system
465 for ( G4int i = 0 ; i < (*it)->GetTotalNumberOfParticipant() ; i++ )
466 {
467 G4QMDParticipant* aP = new G4QMDParticipant( ( (*it)->GetParticipant( i ) )->GetDefinition() , ( (*it)->GetParticipant( i ) )->GetMomentum() , ( (*it)->GetParticipant( i ) )->GetPosition() );
468 system->SetParticipant ( aP );
469 }
470 continue;
471 }
472
473 G4double nucleus_e = std::sqrt ( std::pow ( (*it)->GetNuclearMass()/GeV , 2 ) + std::pow ( (*it)->Get4Momentum().vect().mag() , 2 ) );
474 G4LorentzVector nucleus_p4CM ( (*it)->Get4Momentum().vect() , nucleus_e );
475
476// std::cout << "G4QMDRESULT nucleus deltaQ " << deltaQ << std::endl;
477
478 G4int ia = (*it)->GetMassNumber();
479 G4int iz = (*it)->GetAtomicNumber();
480
481 G4LorentzVector lv ( G4ThreeVector( 0.0 ) , (*it)->GetExcitationEnergy()*GeV + G4ParticleTable::GetParticleTable()->GetIonTable()->GetIonMass( iz , ia ) );
482
483 G4Fragment* aFragment = new G4Fragment( ia , iz , lv );
484
485 G4ReactionProductVector* rv;
486 rv = excitationHandler->BreakItUp( *aFragment );
487 G4bool notBreak = true;
488 for ( G4ReactionProductVector::iterator itt
489 = rv->begin() ; itt != rv->end() ; itt++ )
490 {
491
492 notBreak = false;
493 // Secondary from this nucleus (*it)
494 G4ParticleDefinition* pd = (*itt)->GetDefinition();
495
496 G4LorentzVector p4 ( (*itt)->GetMomentum()/GeV , (*itt)->GetTotalEnergy()/GeV ); //in nucleus(*it) rest system
497 G4LorentzVector p4_CM = CLHEP::boostOf( p4 , -nucleus_p4CM.findBoostToCM() ); // Back to CM
498 G4LorentzVector p4_LAB = CLHEP::boostOf( p4_CM , boostBackToLAB ); // Back to LAB
499
500
501//090122
502 //theParticleChange.AddSecondary( dp );
503 if ( !( pd->GetAtomicNumber() == 4 && pd->GetAtomicMass() == 8 ) )
504 {
505 G4DynamicParticle* dp = new G4DynamicParticle( pd , p4_LAB*GeV );
506 theParticleChange.AddSecondary( dp );
507 }
508 else
509 {
510 //Be8 -> Alpha + Alpha + Q
511 G4ThreeVector randomized_direction( G4UniformRand() , G4UniformRand() , G4UniformRand() );
512 randomized_direction = randomized_direction.unit();
513 G4double q_decay = (*itt)->GetMass() - 2*G4Alpha::Alpha()->GetPDGMass();
514 G4double p_decay = std::sqrt ( std::pow(G4Alpha::Alpha()->GetPDGMass()+q_decay/2,2) - std::pow(G4Alpha::Alpha()->GetPDGMass() , 2 ) );
515 G4LorentzVector p4_a1 ( p_decay*randomized_direction , G4Alpha::Alpha()->GetPDGMass()+q_decay/2 ); //in Be8 rest system
516
517 G4LorentzVector p4_a1_Be8 = CLHEP::boostOf ( p4_a1/GeV , -p4.findBoostToCM() );
518 G4LorentzVector p4_a1_CM = CLHEP::boostOf ( p4_a1_Be8 , -nucleus_p4CM.findBoostToCM() );
519 G4LorentzVector p4_a1_LAB = CLHEP::boostOf ( p4_a1_CM , boostBackToLAB );
520
521 G4LorentzVector p4_a2 ( -p_decay*randomized_direction , G4Alpha::Alpha()->GetPDGMass()+q_decay/2 ); //in Be8 rest system
522
523 G4LorentzVector p4_a2_Be8 = CLHEP::boostOf ( p4_a2/GeV , -p4.findBoostToCM() );
524 G4LorentzVector p4_a2_CM = CLHEP::boostOf ( p4_a2_Be8 , -nucleus_p4CM.findBoostToCM() );
525 G4LorentzVector p4_a2_LAB = CLHEP::boostOf ( p4_a2_CM , boostBackToLAB );
526
527 G4DynamicParticle* dp1 = new G4DynamicParticle( G4Alpha::Alpha() , p4_a1_LAB*GeV );
528 G4DynamicParticle* dp2 = new G4DynamicParticle( G4Alpha::Alpha() , p4_a2_LAB*GeV );
529 theParticleChange.AddSecondary( dp1 );
530 theParticleChange.AddSecondary( dp2 );
531 }
532//090122
533
534/*
535 std::cout
536 << "Regist Secondary "
537 << (*itt)->GetDefinition()->GetParticleName()
538 << " "
539 << (*itt)->GetMomentum()/GeV
540 << " "
541 << (*itt)->GetKineticEnergy()/GeV
542 << " "
543 << (*itt)->GetMass()/GeV
544 << " "
545 << (*itt)->GetTotalEnergy()/GeV
546 << " "
547 << (*itt)->GetTotalEnergy()/GeV * (*itt)->GetTotalEnergy()/GeV
548 - (*itt)->GetMomentum()/GeV * (*itt)->GetMomentum()/GeV
549 << " "
550 << nucleus_p4CM.findBoostToCM()
551 << " "
552 << p4
553 << " "
554 << p4_CM
555 << " "
556 << p4_LAB
557 << std::endl;
558*/
559
560 }
561 if ( notBreak == true )
562 {
563
564 G4ParticleDefinition* pd = G4ParticleTable::GetParticleTable()->GetIon( (*it)->GetAtomicNumber() , (*it)->GetMassNumber(), (*it)->GetExcitationEnergy()*GeV );
565 G4LorentzVector p4_CM = nucleus_p4CM;
566 G4LorentzVector p4_LAB = CLHEP::boostOf( p4_CM , boostBackToLAB ); // Back to LAB
567 G4DynamicParticle* dp = new G4DynamicParticle( pd , p4_LAB*GeV );
568 theParticleChange.AddSecondary( dp );
569
570 }
571
572 for ( G4ReactionProductVector::iterator itt
573 = rv->begin() ; itt != rv->end() ; itt++ )
574 {
575 delete *itt;
576 }
577 delete rv;
578
579 delete aFragment;
580
581 }
582
583
584
585 for ( G4int i = 0 ; i < system->GetTotalNumberOfParticipant() ; i++ )
586 {
587
588 // Secondary particles
589
590 G4ParticleDefinition* pd = system->GetParticipant( i )->GetDefinition();
591 G4LorentzVector p4_CM = system->GetParticipant( i )->Get4Momentum();
592 G4LorentzVector p4_LAB = CLHEP::boostOf( p4_CM , boostBackToLAB );
593 G4DynamicParticle* dp = new G4DynamicParticle( pd , p4_LAB*GeV );
594 theParticleChange.AddSecondary( dp );
595
596/*
597 G4cout << "G4QMDRESULT "
598 << "r" << i << " " << system->GetParticipant ( i ) -> GetPosition() << " "
599 << "p" << i << " " << system->GetParticipant ( i ) -> Get4Momentum()
600 << G4endl;
601*/
602
603 }
604
605 for ( std::vector< G4QMDNucleus* >::iterator it
606 = nucleuses.begin() ; it != nucleuses.end() ; it++ )
607 {
608 delete *it; // delete nulceuse
609 }
610 nucleuses.clear();
611
612 system->Clear();
613 delete system;
614
615 theParticleChange.SetStatusChange( stopAndKill );
616
617 return &theParticleChange;
618
619}
620
621
622
623void G4QMDReaction::calcOffSetOfCollision( G4double b ,
624G4ParticleDefinition* pd_proj ,
625G4ParticleDefinition* pd_targ ,
626G4double ptot , G4double etot , G4double bmax , G4ThreeVector boostToCM )
627{
628
629 G4double mass_proj = pd_proj->GetPDGMass()/GeV;
630 G4double mass_targ = pd_targ->GetPDGMass()/GeV;
631
632 G4double stot = std::sqrt ( etot*etot - ptot*ptot );
633
634 G4double pstt = std::sqrt ( ( stot*stot - ( mass_proj + mass_targ ) * ( mass_proj + mass_targ )
635 ) * ( stot*stot - ( mass_proj - mass_targ ) * ( mass_proj - mass_targ ) ) )
636 / ( 2.0 * stot );
637
638 G4double pzcc = pstt;
639 G4double eccm = stot - ( mass_proj + mass_targ );
640
641 G4int zp = 1;
642 G4int ap = 1;
643 if ( pd_proj->GetParticleType() == "nucleus" )
644 {
645 zp = pd_proj->GetAtomicNumber();
646 ap = pd_proj->GetAtomicMass();
647 }
648 else
649 {
650 // proton, neutron, mesons
651 zp = int ( pd_proj->GetPDGCharge()/eplus + 0.5 );
652 // ap = 1;
653 }
654
655
656 G4int zt = pd_targ->GetAtomicNumber();
657 G4int at = pd_targ->GetAtomicMass();
658
659
660 //G4double rmax0 = 8.0; // T.K dicide parameter value // for low energy
661 G4double rmax0 = bmax + 4.0;
662 G4double rmax = std::sqrt( rmax0*rmax0 + b*b );
663
664 G4double ccoul = 0.001439767;
665 G4double pcca = 1.0 - double ( zp * zt ) * ccoul / eccm / rmax - ( b / rmax )*( b / rmax );
666
667 G4double pccf = std::sqrt( pcca );
668
669 //Fix for neutral particles
670 G4double aas1 = 0.0;
671 G4double bbs = 0.0;
672
673 if ( zp != 0 )
674 {
675 G4double aas = 2.0 * eccm * b / double ( zp * zt ) / ccoul;
676 bbs = 1.0 / std::sqrt ( 1.0 + aas*aas );
677 aas1 = ( 1.0 + aas * b / rmax ) * bbs;
678 }
679
680 G4double cost = 0.0;
681 G4double sint = 0.0;
682 G4double thet1 = 0.0;
683 G4double thet2 = 0.0;
684 if ( 1.0 - aas1*aas1 <= 0 || 1.0 - bbs*bbs <= 0.0 )
685 {
686 cost = 1.0;
687 sint = 0.0;
688 }
689 else
690 {
691 G4double aat1 = aas1 / std::sqrt ( 1.0 - aas1*aas1 );
692 G4double aat2 = bbs / std::sqrt ( 1.0 - bbs*bbs );
693
694 thet1 = std::atan ( aat1 );
695 thet2 = std::atan ( aat2 );
696
697// TK enter to else block
698 G4double theta = thet1 - thet2;
699 cost = std::cos( theta );
700 sint = std::sin( theta );
701 }
702
703 G4double rzpr = -rmax * cost * ( mass_targ ) / ( mass_proj + mass_targ );
704 G4double rzta = rmax * cost * ( mass_proj ) / ( mass_proj + mass_targ );
705
706 G4double rxpr = rmax / 2.0 * sint;
707
708 G4double rxta = -rxpr;
709
710
711 G4double pzpc = pzcc * ( cost * pccf + sint * b / rmax );
712 G4double pxpr = pzcc * ( -sint * pccf + cost * b / rmax );
713
714 G4double pztc = - pzpc;
715 G4double pxta = - pxpr;
716
717 G4double epc = std::sqrt ( pzpc*pzpc + pxpr*pxpr + mass_proj*mass_proj );
718 G4double etc = std::sqrt ( pztc*pztc + pxta*pxta + mass_targ*mass_targ );
719
720 G4double pzpr = pzpc;
721 G4double pzta = pztc;
722 G4double epr = epc;
723 G4double eta = etc;
724
725// CM -> NN
726 G4double gammacm = boostToCM.gamma();
727 //G4double betacm = -boostToCM.beta();
728 G4double betacm = boostToCM.z();
729 pzpr = pzpc + betacm * gammacm * ( gammacm / ( 1. + gammacm ) * pzpc * betacm + epc );
730 pzta = pztc + betacm * gammacm * ( gammacm / ( 1. + gammacm ) * pztc * betacm + etc );
731 epr = gammacm * ( epc + betacm * pzpc );
732 eta = gammacm * ( etc + betacm * pztc );
733
734 //G4double betpr = pzpr / epr;
735 //G4double betta = pzta / eta;
736
737 G4double gammpr = epr / ( mass_proj );
738 G4double gammta = eta / ( mass_targ );
739
740 pzta = pzta / double ( at );
741 pxta = pxta / double ( at );
742
743 pzpr = pzpr / double ( ap );
744 pxpr = pxpr / double ( ap );
745
746 G4double zeroz = 0.0;
747
748 rzpr = rzpr -zeroz;
749 rzta = rzta -zeroz;
750
751 // Set results
752 coulomb_collision_gamma_proj = gammpr;
753 coulomb_collision_rx_proj = rxpr;
754 coulomb_collision_rz_proj = rzpr;
755 coulomb_collision_px_proj = pxpr;
756 coulomb_collision_pz_proj = pzpr;
757
758 coulomb_collision_gamma_targ = gammta;
759 coulomb_collision_rx_targ = rxta;
760 coulomb_collision_rz_targ = rzta;
761 coulomb_collision_px_targ = pxta;
762 coulomb_collision_pz_targ = pzta;
763
764}
765
766
767
768void G4QMDReaction::setEvaporationCh()
769{
770
771 if ( gem == true )
772 evaporation->SetGEMChannel();
773 else
774 evaporation->SetDefaultChannel();
775
776}
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