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25 //
26 // G4VDecayChannel
27 //
28 // Author: H.Kurashige, 27 July 1996
29 // -------------------------------------------
30
31 #include "G4VDecayChannel.hh"
32
33 #include "G4AutoLock.hh"
34 #include "G4DecayProducts.hh"
35 #include "G4DecayTable.hh"
36 #include "G4ParticleDefinition.hh"
37 #include "G4ParticleTable.hh"
38 #include "G4SystemOfUnits.hh"
39 #include "Randomize.hh"
40
41 const G4String G4VDecayChannel::noName = " ";
42
43 G4VDecayChannel::G4VDecayChannel()
44 {
45 // set pointer to G4ParticleTable (static an
46 particletable = G4ParticleTable::GetParticle
47 }
48
49 G4VDecayChannel::G4VDecayChannel(const G4Strin
50 : kinematics_name(aName), verboseLevel(verbo
51 {
52 // set pointer to G4ParticleTable (static an
53 particletable = G4ParticleTable::GetParticle
54 }
55
56 G4VDecayChannel::G4VDecayChannel(const G4Strin
57 G4double theB
58 const G4Strin
59 const G4Strin
60 const G4Strin
61 : kinematics_name(aName), rbranch(theBR), nu
62 {
63 // set pointer to G4ParticleTable (static an
64 particletable = G4ParticleTable::GetParticle
65
66 // parent name
67 parent_name = new G4String(theParentName);
68
69 // cleate array
70 daughters_name = new G4String*[numberOfDaugh
71 for (G4int index = 0; index < numberOfDaught
72 daughters_name[index] = nullptr;
73 }
74
75 // daughters' name
76 if (numberOfDaughters > 0) daughters_name[0]
77 if (numberOfDaughters > 1) daughters_name[1]
78 if (numberOfDaughters > 2) daughters_name[2]
79 if (numberOfDaughters > 3) daughters_name[3]
80 if (numberOfDaughters > 4) daughters_name[4]
81
82 if (rbranch < 0.)
83 rbranch = 0.0;
84 else if (rbranch > 1.0)
85 rbranch = 1.0;
86 }
87
88 G4VDecayChannel::G4VDecayChannel(const G4VDeca
89 {
90 kinematics_name = right.kinematics_name;
91 verboseLevel = right.verboseLevel;
92 rbranch = right.rbranch;
93 rangeMass = right.rangeMass;
94
95 // copy parent name
96 parent_name = new G4String(*right.parent_nam
97
98 // create array
99 numberOfDaughters = right.numberOfDaughters;
100
101 daughters_name = nullptr;
102 if (numberOfDaughters > 0) {
103 daughters_name = new G4String*[numberOfDau
104 // copy daughters name
105 for (G4int index = 0; index < numberOfDaug
106 daughters_name[index] = new G4String(*ri
107 }
108 }
109
110 // particle table
111 particletable = G4ParticleTable::GetParticle
112
113 parent_polarization = right.parent_polarizat
114
115 G4MUTEXINIT(daughtersMutex);
116 G4MUTEXINIT(parentMutex);
117 }
118
119 G4VDecayChannel& G4VDecayChannel::operator=(co
120 {
121 if (this != &right) {
122 kinematics_name = right.kinematics_name;
123 verboseLevel = right.verboseLevel;
124 rbranch = right.rbranch;
125 rangeMass = right.rangeMass;
126 parent_polarization = right.parent_polariz
127 // copy parent name
128 delete parent_name;
129 parent_name = new G4String(*right.parent_n
130
131 // clear daughters_name array
132 ClearDaughtersName();
133
134 // recreate array
135 numberOfDaughters = right.numberOfDaughter
136 if (numberOfDaughters > 0) {
137 daughters_name = new G4String*[numberOfD
138 // copy daughters name
139 for (G4int index = 0; index < numberOfDa
140 daughters_name[index] = new G4String(*
141 }
142 }
143 }
144
145 // particle table
146 particletable = G4ParticleTable::GetParticle
147
148 G4MUTEXINIT(daughtersMutex);
149 G4MUTEXINIT(parentMutex);
150
151 return *this;
152 }
153
154 G4VDecayChannel::~G4VDecayChannel()
155 {
156 ClearDaughtersName();
157 delete parent_name;
158 parent_name = nullptr;
159 delete[] G4MT_daughters_mass;
160 G4MT_daughters_mass = nullptr;
161 delete[] G4MT_daughters_width;
162 G4MT_daughters_width = nullptr;
163 G4MUTEXDESTROY(daughtersMutex);
164 G4MUTEXDESTROY(parentMutex);
165 }
166
167 void G4VDecayChannel::ClearDaughtersName()
168 {
169 G4AutoLock l(&daughtersMutex);
170 if (daughters_name != nullptr) {
171 if (numberOfDaughters > 0) {
172 #ifdef G4VERBOSE
173 if (verboseLevel > 1) {
174 G4cout << "G4VDecayChannel::ClearDaugh
175 << " for " << *parent_name << G
176 }
177 #endif
178 for (G4int index = 0; index < numberOfDa
179 delete daughters_name[index];
180 }
181 }
182 delete[] daughters_name;
183 daughters_name = nullptr;
184 }
185
186 delete[] G4MT_daughters;
187 delete[] G4MT_daughters_mass;
188 delete[] G4MT_daughters_width;
189 G4MT_daughters_width = nullptr;
190 G4MT_daughters = nullptr;
191 G4MT_daughters_mass = nullptr;
192
193 numberOfDaughters = 0;
194 }
195
196 void G4VDecayChannel::SetNumberOfDaughters(G4i
197 {
198 if (size > 0) {
199 // remove old contents
200 ClearDaughtersName();
201 // cleate array
202 daughters_name = new G4String*[size];
203 for (G4int index = 0; index < size; ++inde
204 daughters_name[index] = nullptr;
205 }
206 numberOfDaughters = size;
207 }
208 }
209
210 void G4VDecayChannel::SetDaughter(G4int anInde
211 {
212 // check numberOfDaughters is positive
213 if (numberOfDaughters <= 0) {
214 #ifdef G4VERBOSE
215 if (verboseLevel > 0) {
216 G4cout << "G4VDecayChannel::SetDaughter(
217 << "Number of daughters is not de
218 }
219 #endif
220 return;
221 }
222
223 // An analysis of this code, shows that this
224 // only in the constructor of derived classe
225 // The general idea of this method is probab
226 // the possibility to re-define daughters on
227 // this design is extremely problematic for
228 // require (as practically happens) that the
229 // at construction, i.e. when G4MT_daughters
230 // moreover this method can be called only a
231 // has been called (see previous if), in suc
232 //
233 if (daughters_name == nullptr) {
234 G4Exception("G4VDecayChannel::SetDaughter(
235 "Trying to add a daughter with
236 return;
237 }
238 if (G4MT_daughters != nullptr) {
239 G4Exception("G4VDecayChannel::SetDaughter(
240 "Trying to modify a daughter o
241 but decay channel already has
242 return;
243 }
244
245 // check an index
246 if ((anIndex < 0) || (anIndex >= numberOfDau
247 #ifdef G4VERBOSE
248 if (verboseLevel > 0) {
249 G4cout << "G4VDecayChannel::SetDaughter(
250 << "index out of range " << anInd
251 }
252 #endif
253 }
254 else {
255 // fill the name
256 daughters_name[anIndex] = new G4String(par
257 #ifdef G4VERBOSE
258 if (verboseLevel > 1) {
259 G4cout << "G4VDecayChannel::SetDaughter[
260 G4cout << daughters_name[anIndex] << ":"
261 }
262 #endif
263 }
264 }
265
266 void G4VDecayChannel::SetDaughter(G4int anInde
267 {
268 if (parent_type != nullptr) SetDaughter(anIn
269 }
270
271 void G4VDecayChannel::FillDaughters()
272 {
273 G4AutoLock lock(&daughtersMutex);
274
275 // Double check, check again if another thre
276 // case do not need to do anything
277 if (G4MT_daughters != nullptr) return;
278
279 G4int index;
280
281 #ifdef G4VERBOSE
282 if (verboseLevel > 1) G4cout << "G4VDecayCha
283 #endif
284 if (G4MT_daughters != nullptr) {
285 delete[] G4MT_daughters;
286 G4MT_daughters = nullptr;
287 }
288
289 // parent mass
290 CheckAndFillParent();
291 G4double parentmass = G4MT_parent->GetPDGMas
292
293 //
294 G4double sumofdaughtermass = 0.0;
295 G4double sumofdaughterwidthsq = 0.0;
296
297 if ((numberOfDaughters <= 0) || (daughters_n
298 #ifdef G4VERBOSE
299 if (verboseLevel > 0) {
300 G4cout << "G4VDecayChannel::FillDaughter
301 << "[ " << G4MT_parent->GetPartic
302 << "numberOfDaughters is not defi
303 }
304 #endif
305 G4MT_daughters = nullptr;
306 G4Exception("G4VDecayChannel::FillDaughter
307 "Cannot fill daughters: number
308 }
309
310 // create and set the array of pointers to d
311 G4MT_daughters = new G4ParticleDefinition*[n
312 delete[] G4MT_daughters_mass;
313 delete[] G4MT_daughters_width;
314 G4MT_daughters_mass = new G4double[numberOfD
315 G4MT_daughters_width = new G4double[numberOf
316 // loop over all daughters
317 for (index = 0; index < numberOfDaughters; +
318 if (daughters_name[index] == nullptr) {
319 // daughter name is not defined
320 #ifdef G4VERBOSE
321 if (verboseLevel > 0) {
322 G4cout << "G4VDecayChannel::FillDaught
323 << "[ " << G4MT_parent->GetPart
324 << "-th daughter is not defined
325 }
326 #endif
327 G4MT_daughters[index] = nullptr;
328 G4Exception("G4VDecayChannel::FillDaught
329 "Cannot fill daughters: name
330 }
331 // search daughter particles in the partic
332 G4MT_daughters[index] = particletable->Fin
333 if (G4MT_daughters[index] == nullptr) {
334 // cannot find the daughter particle
335 #ifdef G4VERBOSE
336 if (verboseLevel > 0) {
337 G4cout << "G4VDecayChannel::FillDaught
338 << "[ " << G4MT_parent->GetPart
339 << *daughters_name[index] << "
340 G4cout << " The BR of this decay mode
341 }
342 #endif
343 SetBR(0.0);
344 return;
345 }
346 #ifdef G4VERBOSE
347 if (verboseLevel > 1) {
348 G4cout << index << ":" << *daughters_nam
349 G4cout << ":" << G4MT_daughters[index] <
350 }
351 #endif
352 G4MT_daughters_mass[index] = G4MT_daughter
353 G4double d_width = G4MT_daughters[index]->
354 G4MT_daughters_width[index] = d_width;
355 sumofdaughtermass += G4MT_daughters[index]
356 sumofdaughterwidthsq += d_width * d_width;
357 } // end loop over all daughters
358
359 // check sum of daghter mass
360 G4double widthMass =
361 std::sqrt(G4MT_parent->GetPDGWidth() * G4M
362 if ((G4MT_parent->GetParticleType() != "nucl
363 && (sumofdaughtermass > parentmass + ran
364 {
365 // !!! illegal mass !!!
366 #ifdef G4VERBOSE
367 if (GetVerboseLevel() > 0) {
368 G4cout << "G4VDecayChannel::FillDaughter
369 << "[ " << G4MT_parent->GetPartic
370 << " Energy/Momentum consereva
371 if (GetVerboseLevel() > 1) {
372 G4cout << " parent:" << *parent_nam
373 << G4endl;
374 for (index = 0; index < numberOfDaught
375 G4cout << " daughter " << index
376 << " mass:" << G4MT_daughters
377 }
378 }
379 }
380 #endif
381 }
382 }
383
384 void G4VDecayChannel::FillParent()
385 {
386 G4AutoLock lock(&parentMutex);
387
388 // Double check, check again if another thre
389 // case do not need to do anything
390 if (G4MT_parent != nullptr) return;
391
392 if (parent_name == nullptr) {
393 // parent name is not defined
394 #ifdef G4VERBOSE
395 if (verboseLevel > 0) {
396 G4cout << "G4VDecayChannel::FillParent()
397 << "parent name is not defined !!
398 }
399 #endif
400 G4MT_parent = nullptr;
401 G4Exception("G4VDecayChannel::FillParent()
402 "Cannot fill parent: parent na
403 return;
404 }
405
406 // search parent particle in the particle ta
407 G4MT_parent = particletable->FindParticle(*p
408 if (G4MT_parent == nullptr) {
409 // parent particle does not exist
410 #ifdef G4VERBOSE
411 if (verboseLevel > 0) {
412 G4cout << "G4VDecayChannel::FillParent()
413 << G4endl;
414 }
415 #endif
416 G4Exception("G4VDecayChannel::FillParent()
417 "Cannot fill parent: parent do
418 return;
419 }
420 G4MT_parent_mass = G4MT_parent->GetPDGMass()
421 }
422
423 void G4VDecayChannel::SetParent(const G4Partic
424 {
425 if (parent_type != nullptr) SetParent(parent
426 }
427
428 G4int G4VDecayChannel::GetAngularMomentum()
429 {
430 // determine angular momentum
431
432 // fill pointers to daughter particles if no
433 CheckAndFillDaughters();
434
435 const G4int PiSpin = G4MT_parent->GetPDGiSpi
436 const G4int PParity = G4MT_parent->GetPDGiPa
437 if (2 == numberOfDaughters) // up to now we
438 {
439 const G4int D1iSpin = G4MT_daughters[0]->G
440 const G4int D1Parity = G4MT_daughters[0]->
441 const G4int D2iSpin = G4MT_daughters[1]->G
442 const G4int D2Parity = G4MT_daughters[1]->
443 const G4int MiniSpin = std::abs(D1iSpin -
444 const G4int MaxiSpin = D1iSpin + D2iSpin;
445 const G4int lMax = (PiSpin + D1iSpin + D2i
446 G4int lMin;
447 #ifdef G4VERBOSE
448 if (verboseLevel > 1) {
449 G4cout << "iSpin: " << PiSpin << " -> "
450 G4cout << "2*jmin, 2*jmax, lmax " << Min
451 }
452 #endif
453 for (G4int j = MiniSpin; j <= MaxiSpin; j
454 { // spin couplings
455 lMin = std::abs(PiSpin - j) / 2;
456 #ifdef G4VERBOSE
457 if (verboseLevel > 1) G4cout << "-> chec
458 #endif
459 for (G4int l = lMin; l <= lMax; ++l) {
460 #ifdef G4VERBOSE
461 if (verboseLevel > 1) G4cout << " chec
462 #endif
463 if (l % 2 == 0) {
464 if (PParity == D1Parity * D2Parity)
465 return l;
466 }
467 else {
468 if (PParity == -1 * D1Parity * D2Par
469 return l;
470 }
471 }
472 }
473 }
474 else {
475 G4Exception("G4VDecayChannel::GetAngularMo
476 "Sorry, can't handle 3 particl
477 return 0;
478 }
479 G4Exception("G4VDecayChannel::GetAngularMome
480 "Can't find angular momentum for
481 return 0;
482 }
483
484 void G4VDecayChannel::DumpInfo()
485 {
486 G4cout << " BR: " << rbranch << " [" << ki
487 G4cout << " : ";
488 for (G4int index = 0; index < numberOfDaught
489 if (daughters_name[index] != nullptr) {
490 G4cout << " " << *(daughters_name[index]
491 }
492 else {
493 G4cout << " not defined ";
494 }
495 }
496 G4cout << G4endl;
497 }
498
499 const G4String& G4VDecayChannel::GetNoName() c
500 {
501 return noName;
502 }
503
504 G4double G4VDecayChannel::DynamicalMass(G4doub
505 {
506 if (width <= 0.0) return massPDG;
507 if (maxDev > rangeMass) maxDev = rangeMass;
508 if (maxDev <= -1. * rangeMass) return massPD
509
510 G4double x = G4UniformRand() * (maxDev + ran
511 G4double y = G4UniformRand();
512 const std::size_t MAX_LOOP = 10000;
513 for (std::size_t loop_counter = 0; loop_coun
514 if (y * (width * width * x * x + massPDG *
515 <= massPDG * massPDG * width * width)
516 break;
517 x = G4UniformRand() * (maxDev + rangeMass)
518 y = G4UniformRand();
519 }
520 G4double mass = massPDG + x * width;
521 return mass;
522 }
523
524 G4bool G4VDecayChannel::IsOKWithParentMass(G4d
525 {
526 G4double sumOfDaughterMassMin = 0.0;
527 CheckAndFillParent();
528 CheckAndFillDaughters();
529 // skip one body decay
530 if (numberOfDaughters == 1) return true;
531
532 for (G4int index = 0; index < numberOfDaught
533 sumOfDaughterMassMin += G4MT_daughters_mas
534 }
535 return (parentMass >= sumOfDaughterMassMin);
536 }
537
538 void G4VDecayChannel::SetBR(G4double value)
539 {
540 rbranch = value;
541 if (rbranch < 0.)
542 rbranch = 0.0;
543 else if (rbranch > 1.0)
544 rbranch = 1.0;
545 }
546