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>> 1 // This code implementation is the intellectual property of
>> 2 // the GEANT4 collaboration.
1 // 3 //
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14 // * regarding this software system or assum <<
15 // * use. Please see the license in the file <<
16 // * for the full disclaimer and the limitatio <<
17 // * <<
18 // * This code implementation is the result <<
19 // * technical work of the GEANT4 collaboratio <<
20 // * By using, copying, modifying or distri <<
21 // * any work based on the software) you ag <<
22 // * use in resulting scientific publicati <<
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25 // <<
26 // 7 //
>> 8 // $Id: G4Decay.cc,v 1.7 2000/10/25 00:01:04 kurasige Exp $
>> 9 // GEANT4 tag $Name: geant4-03-00 $
27 // 10 //
28 // 11 //
29 // ------------------------------------------- 12 // --------------------------------------------------------------
30 // GEANT 4 class implementation file 13 // GEANT 4 class implementation file
31 // 14 //
>> 15 // For information related to this code contact:
>> 16 // CERN, CN Division, ASD group
32 // History: first implementation, based o 17 // History: first implementation, based on object model of
33 // 2nd December 1995, G.Cosmo 18 // 2nd December 1995, G.Cosmo
34 // 7 July 1996 H.Kurashige 19 // 7 July 1996 H.Kurashige
35 // ------------------------------------------- 20 // ------------------------------------------------------------
36 // remove BuildPhysicsTable() 28 Nov. 1997 21 // remove BuildPhysicsTable() 28 Nov. 1997 H.Kurashige
37 // change DBL_EPSIRON to DBL_MIN 14 Dec. 19 22 // change DBL_EPSIRON to DBL_MIN 14 Dec. 1997 H.Kurashige
38 // modified for new ParticleChange 12 Mar. 1 23 // modified for new ParticleChange 12 Mar. 1998 H.Kurashige
39 // modified for "GoodForTrackingFlag" 19 Jun 24 // modified for "GoodForTrackingFlag" 19 June 1998 H.Kurashige
40 // rename thePhysicsTable to aPhyscisTable 2 25 // rename thePhysicsTable to aPhyscisTable 2 Aug. 1998 H.Kurashige
41 // modified IsApplicable in order to protect 26 // modified IsApplicable in order to protect the decay from registered
42 // to resonances 12 Dec. 1998 H.Kurashi 27 // to resonances 12 Dec. 1998 H.Kurashige
43 // remove G4ParticleMomentum 6 Feb. 99 H.Ku 28 // remove G4ParticleMomentum 6 Feb. 99 H.Kurashige
44 // modified IsApplicable to activate G4Deca 29 // modified IsApplicable to activate G4Decay for resonances 1 Mar. 00 H.Kurashige
45 // Add External Decayer 23 Feb. 2001 <<
46 // change LowestBinValue,HighestBinValue and <<
47 // 30 //
48 <<
49 #include "G4Decay.hh" 31 #include "G4Decay.hh"
50 <<
51 #include "G4PhysicalConstants.hh" <<
52 #include "G4SystemOfUnits.hh" <<
53 #include "G4DynamicParticle.hh" 32 #include "G4DynamicParticle.hh"
54 #include "G4DecayProducts.hh" 33 #include "G4DecayProducts.hh"
55 #include "G4DecayTable.hh" 34 #include "G4DecayTable.hh"
56 #include "G4VDecayChannel.hh" <<
57 #include "G4PhysicsLogVector.hh" 35 #include "G4PhysicsLogVector.hh"
58 #include "G4ParticleChangeForDecay.hh" 36 #include "G4ParticleChangeForDecay.hh"
59 #include "G4VExtDecayer.hh" <<
60 37
61 // constructor 38 // constructor
62 G4Decay::G4Decay(const G4String& processName) 39 G4Decay::G4Decay(const G4String& processName)
63 :G4VRestDiscret 40 :G4VRestDiscreteProcess(processName, fDecay),
64 verboseLevel(1), << 41 HighestBinValue(10.0),
65 HighestValue(2 << 42 LowestBinValue(1.0e-3),
66 fRemainderLifeTime(-1.0), << 43 TotBin(200),
67 pExtDecayer(nu << 44 verboseLevel(1)
68 { 45 {
69 // set Process Sub Type <<
70 SetProcessSubType(static_cast<int>(DECAY)); <<
71 <<
72 #ifdef G4VERBOSE 46 #ifdef G4VERBOSE
73 if (GetVerboseLevel()>1) { 47 if (GetVerboseLevel()>1) {
74 G4cout << "G4Decay constructor " << " Na << 48 G4cerr << "G4Decay constructor " << " Name:" << processName << G4endl;
75 } 49 }
76 #endif 50 #endif
77 << 51 aPhysicsTable = NULL;
78 pParticleChange = &fParticleChangeForDecay; 52 pParticleChange = &fParticleChangeForDecay;
79 } 53 }
80 54
81 G4Decay::~G4Decay() 55 G4Decay::~G4Decay()
82 { 56 {
83 if (pExtDecayer != nullptr) { << 57 if (aPhysicsTable != NULL) {
84 delete pExtDecayer; << 58 aPhysicsTable->clearAndDestroy();
>> 59 delete aPhysicsTable;
85 } 60 }
86 } 61 }
87 62
88 G4bool G4Decay::IsApplicable(const G4ParticleD 63 G4bool G4Decay::IsApplicable(const G4ParticleDefinition& aParticleType)
89 { 64 {
90 // check if the particle is stable? 65 // check if the particle is stable?
91 if (aParticleType.GetPDGLifeTime() <0.0) { 66 if (aParticleType.GetPDGLifeTime() <0.0) {
92 return false; 67 return false;
93 } else if (aParticleType.GetPDGMass() <= 0. 68 } else if (aParticleType.GetPDGMass() <= 0.0*MeV) {
94 return false; 69 return false;
95 } else { 70 } else {
96 return true; 71 return true;
97 } 72 }
98 } 73 }
99 74
100 G4double G4Decay::GetMeanLifeTime(const G4Trac << 75 G4double G4Decay::GetMeanLifeTime(const G4Track& aTrack,
101 G4ForceCondi 76 G4ForceCondition*)
102 { 77 {
>> 78 // get particle type
>> 79 const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
>> 80
103 // returns the mean free path in GEANT4 int 81 // returns the mean free path in GEANT4 internal units
104 G4double meanlife; 82 G4double meanlife;
105 << 83 G4ParticleDefinition* aParticleDef = aParticle->GetDefinition();
106 // get particle <<
107 const G4DynamicParticle* aParticle = aTrack <<
108 const G4ParticleDefinition* aParticleDef = <<
109 G4double aLife = aParticleDef->GetPDGLifeTi 84 G4double aLife = aParticleDef->GetPDGLifeTime();
110 85
>> 86 #ifdef G4VERBOSE
>> 87 if (GetVerboseLevel()>1) {
>> 88 G4cerr << "G4Decay::GetMeanLifeTime() "<< G4endl;
>> 89 G4cerr << "KineticEnergy:" << aParticle->GetKineticEnergy()/GeV <<"[GeV]";
>> 90 G4cerr << "Mass:" << aParticle->GetMass()/GeV <<"[GeV]";
>> 91 G4cerr << "Life time: "<< aLife/ns << "[ns]" << G4endl;
>> 92 }
>> 93 #endif
>> 94
111 // check if the particle is stable? 95 // check if the particle is stable?
112 if (aParticleDef->GetPDGStable()) { 96 if (aParticleDef->GetPDGStable()) {
113 //1000000 times the life time of the unive << 97 meanlife = DBL_MAX;
114 meanlife = 1e24 * s; <<
115 98
>> 99 } else if (aLife < 0.0) {
>> 100 meanlife = DBL_MAX;
>> 101
116 } else { 102 } else {
117 meanlife = aLife; 103 meanlife = aLife;
118 } 104 }
119 105
120 #ifdef G4VERBOSE 106 #ifdef G4VERBOSE
121 if (GetVerboseLevel()>1) { 107 if (GetVerboseLevel()>1) {
122 G4cout << "mean life time: "<< meanlife/n << 108 G4cerr << "mean life time: "<< meanlife/ns << "[ns]" << G4endl;
123 } 109 }
124 #endif 110 #endif
125 111
126 return meanlife; 112 return meanlife;
127 } 113 }
128 114
129 G4double G4Decay::GetMeanFreePath(const G4Trac 115 G4double G4Decay::GetMeanFreePath(const G4Track& aTrack,G4double, G4ForceCondition*)
130 { 116 {
>> 117 // constants
>> 118 G4bool isOutRange ;
>> 119
131 // get particle 120 // get particle
132 const G4DynamicParticle* aParticle = aTrack 121 const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
133 const G4ParticleDefinition* aParticleDef = <<
134 G4double aMass = aParticle->GetMass(); <<
135 G4double aLife = aParticleDef->GetPDGLifeTi <<
136 122
137 << 123 // returns the mean free path in GEANT4 internal units
138 // returns the mean free path in GEANT4 in <<
139 G4double pathlength; 124 G4double pathlength;
140 G4double aCtau = c_light * aLife; << 125 G4ParticleDefinition* aParticleDef = aParticle->GetDefinition();
>> 126 G4double aCtau = c_light * aParticleDef->GetPDGLifeTime();
>> 127 G4double aMass = aParticle->GetMass();
>> 128
>> 129 #ifdef G4VERBOSE
>> 130 if (GetVerboseLevel()>1) {
>> 131 G4cerr << "G4Decay::GetMeanFreePath() "<< G4endl;
>> 132 G4cerr << "KineticEnergy:" << aParticle->GetKineticEnergy()/GeV <<"[GeV]";
>> 133 G4cerr << "Mass:" << aMass/GeV <<"[GeV]";
>> 134 G4cerr << "c*Tau:" << aCtau/m <<"[m]" <<G4endl;
>> 135 }
>> 136 #endif
141 137
142 // check if the particle is stable? 138 // check if the particle is stable?
143 if (aParticleDef->GetPDGStable()) { 139 if (aParticleDef->GetPDGStable()) {
144 pathlength = DBL_MAX; 140 pathlength = DBL_MAX;
145 141
>> 142 } else if (aCtau < 0.0) {
>> 143 pathlength = DBL_MAX;
>> 144
146 //check if the particle has very short life 145 //check if the particle has very short life time ?
147 } else if (aCtau < DBL_MIN) { 146 } else if (aCtau < DBL_MIN) {
148 pathlength = DBL_MIN; 147 pathlength = DBL_MIN;
149 148
>> 149 //check if zero mass
>> 150 } else if (aMass < DBL_MIN) {
>> 151 pathlength = DBL_MAX;
>> 152 #ifdef G4VERBOSE
>> 153 if (GetVerboseLevel()>1) {
>> 154 G4cerr << " Zero Mass particle " << G4endl;
>> 155 }
>> 156 #endif
150 } else { 157 } else {
151 //calculate the mean free path 158 //calculate the mean free path
152 // by using normalized kinetic energy (= E 159 // by using normalized kinetic energy (= Ekin/mass)
153 G4double rKineticEnergy = aParticle->Ge 160 G4double rKineticEnergy = aParticle->GetKineticEnergy()/aMass;
154 if ( rKineticEnergy > HighestValue) { << 161 if ( rKineticEnergy > HighestBinValue) {
155 // gamma >> 1 << 162 // beta >> 1
156 pathlength = ( rKineticEnergy + 1.0)* a 163 pathlength = ( rKineticEnergy + 1.0)* aCtau;
>> 164 } else if ( rKineticEnergy > LowestBinValue) {
>> 165 // check if aPhysicsTable exists
>> 166 if (aPhysicsTable == NULL) BuildPhysicsTable(*aParticleDef);
>> 167 // beta is in the range valid for PhysicsTable
>> 168 pathlength = aCtau *
>> 169 ((*aPhysicsTable)(0))-> GetValue(rKineticEnergy,isOutRange);
157 } else if ( rKineticEnergy < DBL_MIN ) { 170 } else if ( rKineticEnergy < DBL_MIN ) {
158 // too slow particle 171 // too slow particle
159 #ifdef G4VERBOSE 172 #ifdef G4VERBOSE
160 if (GetVerboseLevel()>1) { 173 if (GetVerboseLevel()>1) {
161 G4cout << "G4Decay::GetMeanFreePath() !!p << 174 G4cerr << "G4Decay::GetMeanFreePath() !!particle stops!!";
162 G4cout << aParticleDef->GetParticleNa << 175 G4cerr << aParticleDef->GetParticleName() << G4endl;
163 G4cout << "KineticEnergy:" << aParticle->Ge << 176 G4cerr << "KineticEnergy:" << aParticle->GetKineticEnergy()/GeV <<"[GeV]";
164 } 177 }
165 #endif 178 #endif
166 pathlength = DBL_MIN; 179 pathlength = DBL_MIN;
167 } else { 180 } else {
168 // beta <1 << 181 // beta << 1
169 pathlength = (aParticle->GetTotalMoment 182 pathlength = (aParticle->GetTotalMomentum())/aMass*aCtau ;
170 } 183 }
171 } 184 }
172 return pathlength; << 185 #ifdef G4VERBOSE
>> 186 if (GetVerboseLevel()>1) {
>> 187 G4cerr << "mean free path: "<< pathlength/m << "[m]" << G4endl;
>> 188 }
>> 189 #endif
>> 190 return pathlength;
173 } 191 }
174 192
175 void G4Decay::BuildPhysicsTable(const G4Partic 193 void G4Decay::BuildPhysicsTable(const G4ParticleDefinition&)
176 { 194 {
177 return; << 195 // if aPhysicsTableis has already been created, do nothing
>> 196 if (aPhysicsTable != NULL) return;
>> 197
>> 198 // create aPhysicsTable
>> 199 if (GetVerboseLevel()>1) G4cerr <<" G4Decay::BuildPhysicsTable() "<< G4endl;
>> 200 aPhysicsTable = new G4PhysicsTable(1);
>> 201
>> 202 //create physics vector
>> 203 G4PhysicsLogVector* aVector = new G4PhysicsLogVector(
>> 204 LowestBinValue,
>> 205 HighestBinValue,
>> 206 TotBin);
>> 207
>> 208 G4double beta, gammainv;
>> 209 // fill physics Vector
>> 210 G4int i;
>> 211 for ( i = 0 ; i < TotBin ; i++ ) {
>> 212 gammainv = 1.0/(aVector->GetLowEdgeEnergy(i) + 1.0);
>> 213 beta = sqrt((1.0 - gammainv)*(1.0 +gammainv));
>> 214 aVector->PutValue(i, beta/gammainv);
>> 215 }
>> 216 aPhysicsTable->insert(aVector);
178 } 217 }
179 218
180 G4VParticleChange* G4Decay::DecayIt(const G4Tr 219 G4VParticleChange* G4Decay::DecayIt(const G4Track& aTrack, const G4Step& )
181 { 220 {
182 // The DecayIt() method returns by pointer a 221 // The DecayIt() method returns by pointer a particle-change object.
183 // Units are expressed in GEANT4 internal un 222 // Units are expressed in GEANT4 internal units.
184 223
185 // Initialize ParticleChange 224 // Initialize ParticleChange
186 // all members of G4VParticleChange are 225 // all members of G4VParticleChange are set to equal to
187 // corresponding member in G4Track 226 // corresponding member in G4Track
188 fParticleChangeForDecay.Initialize(aTrack); 227 fParticleChangeForDecay.Initialize(aTrack);
189 228
190 // get particle 229 // get particle
191 const G4DynamicParticle* aParticle = aTrack. 230 const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
192 const G4ParticleDefinition* aParticleDef = a << 231 G4ParticleDefinition* aParticleDef = aParticle->GetDefinition();
193 232
194 // check if the particle is stable 233 // check if the particle is stable
195 if (aParticleDef->GetPDGStable()) return &fP 234 if (aParticleDef->GetPDGStable()) return &fParticleChangeForDecay ;
196 235
197 236
198 //check if thePreAssignedDecayProducts exist 237 //check if thePreAssignedDecayProducts exists
199 const G4DecayProducts* o_products = (aPartic 238 const G4DecayProducts* o_products = (aParticle->GetPreAssignedDecayProducts());
200 G4bool isPreAssigned = (o_products != nullpt << 239 G4bool isPreAssigned = (o_products != NULL);
201 G4DecayProducts* products = nullptr; << 240 G4DecayProducts* products = NULL;
202 <<
203 // decay table <<
204 G4DecayTable *decaytable = aParticleDef->G <<
205 <<
206 // check if external decayer exists <<
207 G4bool isExtDecayer = (decaytable == nullptr <<
208 <<
209 // Error due to NO Decay Table <<
210 if ( (decaytable == nullptr) && !isExtDecaye <<
211 if (GetVerboseLevel()>0) { <<
212 G4cout << "G4Decay::DoIt : decay table <<
213 G4cout << aParticle->GetDefinition()->Ge <<
214 } <<
215 G4ExceptionDescription ed; <<
216 ed << "For " << aParticle->GetDefinition() <<
217 << " decay probability exist but decay <<
218 << "- the particle will be killed;\n" <<
219 << " isExtDecayer: " << isExtDecayer <<
220 << "; isPreAssigned: " << isPreAssigned <<
221 G4Exception( "G4Decay::DecayIt ", <<
222 "DECAY101",JustWarning, ed); <<
223 <<
224 fParticleChangeForDecay.SetNumberOfSeconda <<
225 // Kill the parent particle <<
226 fParticleChangeForDecay.ProposeTrackStatus <<
227 fParticleChangeForDecay.ProposeLocalEnergy <<
228 <<
229 ClearNumberOfInteractionLengthLeft(); <<
230 return &fParticleChangeForDecay ; <<
231 } <<
232 241
233 if (isPreAssigned) { 242 if (isPreAssigned) {
234 // copy decay products 243 // copy decay products
235 products = new G4DecayProducts(*o_products 244 products = new G4DecayProducts(*o_products);
236 } else if ( isExtDecayer ) { <<
237 // decay according to external decayer <<
238 products = pExtDecayer->ImportDecayProduct <<
239 } else { 245 } else {
240 // Decay according to decay table. << 246 // decay acoording to decay table
241 // Keep trying to choose a candidate decay << 247 G4DecayTable *decaytable = aParticleDef->GetDecayTable();
242 // of the decaying particle is below the s << 248
243 // candidate daughter particles. << 249 if (decaytable == NULL){
244 // This is needed because the decay table << 250 #ifdef G4VERBOSE
245 // the assumption of nominal PDG masses, b << 251 if (GetVerboseLevel()>0) {
246 // a dynamic masses well below its nominal << 252 G4cerr << "G4Decay::DoIt : decay table not defined for ";
247 // some of its decay channels can be below << 253 G4cerr << aParticle->GetDefinition()->GetParticleName()<< G4endl;
248 // Note that, for simplicity, we ignore he <<
249 // one or more of the candidate daughter p <<
250 // wide resonance. However, if this is the <<
251 // accepted, then the masses of the resona <<
252 // be sampled by taking into account their <<
253 G4VDecayChannel* decaychannel = nullptr; <<
254 G4double massParent = aParticle->GetMass() <<
255 decaychannel = decaytable->SelectADecayCha <<
256 if ( decaychannel == nullptr) { <<
257 // decay channel not found <<
258 G4ExceptionDescription ed; <<
259 ed << "Can not determine decay channel f <<
260 << aParticleDef->GetParticleName() << G4end <<
261 << " mass of dynamic particle: " <<
262 << massParent/GeV << " (GEV)" << G4endl <<
263 << " dacay table has " << decaytable->entr <<
264 << " entries" << G4endl; <<
265 G4double checkedmass=massParent; <<
266 if (massParent < 0.) { <<
267 checkedmass=aParticleDef->GetPDGMass(); <<
268 ed << "Using PDG mass ("<<checkedmass/GeV <<
269 << "(GeV)) in IsOKWithParentMass" << G4en <<
270 } <<
271 for (G4int ic =0;ic <decaytable->entries <<
272 G4VDecayChannel * dc= decaytable->GetDecayCh <<
273 ed << ic << ": BR " << dc->GetBR() << ", IsO <<
274 << dc->IsOKWithParentMass(checkedmass) <<
275 << ", --> "; <<
276 G4int ndaughters=dc->GetNumberOfDaughters(); <<
277 for (G4int id=0;id<ndaughters;++id) { <<
278 if (id>0) ed << " + "; // seperator, exc <<
279 ed << dc->GetDaughterName(id); <<
280 } <<
281 ed << G4endl; <<
282 } 254 }
283 G4Exception("G4Decay::DoIt", "DECAY003", << 255 #endif
>> 256 fParticleChangeForDecay.SetNumberOfSecondaries(0);
>> 257 // Kill the parent particle
>> 258 fParticleChangeForDecay.SetStatusChange( fStopAndKill ) ;
>> 259 fParticleChangeForDecay.SetLocalEnergyDeposit(0.0);
>> 260
>> 261 ClearNumberOfInteractionLengthLeft();
>> 262 return &fParticleChangeForDecay ;
284 } else { 263 } else {
285 // execute DecayIt() << 264 // choose a decay channel
>> 265 G4VDecayChannel *decaychannel = decaytable->SelectADecayChannel();
>> 266 if (decaychannel == NULL){
>> 267 // decay channel not found
286 #ifdef G4VERBOSE 268 #ifdef G4VERBOSE
287 G4int temp = decaychannel->GetVerboseLev << 269 if (GetVerboseLevel()>0) {
288 if (GetVerboseLevel()>1) { << 270 G4cerr << "G4Decay::DoIt : can not determine decay channel " <<G4endl;
289 G4cout << "G4Decay::DoIt : selected decay c << 271 decaytable ->DumpInfo();
290 << decaychannel <<G4endl; << 272 }
291 decaychannel->SetVerboseLevel(GetVerboseLeve <<
292 } <<
293 #endif 273 #endif
294 products = decaychannel->DecayIt(aPartic << 274 } else {
>> 275 G4int temp;
>> 276 // execute DecayIt()
295 #ifdef G4VERBOSE 277 #ifdef G4VERBOSE
296 if (GetVerboseLevel()>1) { << 278 if (GetVerboseLevel()>1) {
297 decaychannel->SetVerboseLevel(temp); << 279 G4cerr << "G4Decay::DoIt : selected decay channel addr:" << decaychannel <<G4endl;
298 } << 280 temp = decaychannel->GetVerboseLevel();
>> 281 decaychannel->SetVerboseLevel(GetVerboseLevel());
>> 282 }
299 #endif 283 #endif
>> 284 products = decaychannel->DecayIt(aParticle->GetMass());
300 #ifdef G4VERBOSE 285 #ifdef G4VERBOSE
301 if (GetVerboseLevel()>2) { << 286 if (GetVerboseLevel()>1) {
302 if (! products->IsChecked() ) products->Dump << 287 decaychannel->SetVerboseLevel(temp);
303 } << 288 }
304 #endif 289 #endif
>> 290 #ifdef G4VERBOSE
>> 291 // for debug
>> 292 //if (! products->IsChecked() ) products->DumpInfo();
>> 293 #endif
>> 294 }
305 } 295 }
306 } 296 }
307 297
308 // get parent particle information ......... 298 // get parent particle information ...................................
309 G4double ParentEnergy = aParticle->GetTot 299 G4double ParentEnergy = aParticle->GetTotalEnergy();
310 G4double ParentMass = aParticle->GetMas <<
311 if (ParentEnergy < ParentMass) { <<
312 G4ExceptionDescription ed; <<
313 ed << "Total Energy is less than its mass <<
314 << "\n Particle: " << aParticle->GetDef <<
315 << "\n Energy:" << ParentEnergy/MeV <<
316 << "\n Mass:" << ParentMass/MeV << <<
317 G4Exception( "G4Decay::DecayIt ", <<
318 "DECAY102",JustWarning, ed); <<
319 ParentEnergy = ParentMass; <<
320 } <<
321 <<
322 G4ThreeVector ParentDirection(aParticle->Get 300 G4ThreeVector ParentDirection(aParticle->GetMomentumDirection());
323 301
324 //boost all decay products to laboratory fra 302 //boost all decay products to laboratory frame
325 G4double energyDeposit = 0.0; 303 G4double energyDeposit = 0.0;
326 G4double finalGlobalTime = aTrack.GetGlobalT 304 G4double finalGlobalTime = aTrack.GetGlobalTime();
327 G4double finalLocalTime = aTrack.GetLocalTim <<
328 if (aTrack.GetTrackStatus() == fStopButAlive 305 if (aTrack.GetTrackStatus() == fStopButAlive ){
329 // AtRest case 306 // AtRest case
330 finalGlobalTime += fRemainderLifeTime; 307 finalGlobalTime += fRemainderLifeTime;
331 finalLocalTime += fRemainderLifeTime; <<
332 energyDeposit += aParticle->GetKineticEner 308 energyDeposit += aParticle->GetKineticEnergy();
333 if (isPreAssigned) products->Boost( Parent <<
334 } else { 309 } else {
335 // PostStep case 310 // PostStep case
336 if (!isExtDecayer) products->Boost( Parent << 311 products->Boost( ParentEnergy, ParentDirection);
337 } 312 }
338 // set polarization for daughter particles <<
339 DaughterPolarization(aTrack, products); <<
340 <<
341 313
342 //add products in fParticleChangeForDecay 314 //add products in fParticleChangeForDecay
343 G4int numberOfSecondaries = products->entrie 315 G4int numberOfSecondaries = products->entries();
344 fParticleChangeForDecay.SetNumberOfSecondari 316 fParticleChangeForDecay.SetNumberOfSecondaries(numberOfSecondaries);
345 #ifdef G4VERBOSE 317 #ifdef G4VERBOSE
346 if (GetVerboseLevel()>1) { 318 if (GetVerboseLevel()>1) {
347 G4cout << "G4Decay::DoIt : Decay vertex : << 319 G4cerr << "G4Decay::DoIt : Decay vertex :";
348 G4cout << " Time: " << finalGlobalTime/ns << 320 G4cerr << " Time: " << finalGlobalTime/ns << "[ns]";
349 G4cout << " X:" << (aTrack.GetPosition()). << 321 G4cerr << " X:" << (aTrack.GetPosition()).x() /cm << "[cm]";
350 G4cout << " Y:" << (aTrack.GetPosition()). << 322 G4cerr << " Y:" << (aTrack.GetPosition()).y() /cm << "[cm]";
351 G4cout << " Z:" << (aTrack.GetPosition()). << 323 G4cerr << " Z:" << (aTrack.GetPosition()).z() /cm << "[cm]";
352 G4cout << G4endl; << 324 G4cerr << G4endl;
353 G4cout << "G4Decay::DoIt : decay products << 325 G4cerr << "G4Decay::DoIt : decay products in Lab. Frame" << G4endl;
354 products->DumpInfo(); 326 products->DumpInfo();
355 } 327 }
356 #endif 328 #endif
357 G4int index; 329 G4int index;
358 G4ThreeVector currentPosition; 330 G4ThreeVector currentPosition;
359 const G4TouchableHandle thand = aTrack.GetTo << 331 for (index=0; index < numberOfSecondaries; index++)
360 for (index=0; index < numberOfSecondaries; i << 332 {
361 // get current position of the track << 333 // get current position of the track
362 currentPosition = aTrack.GetPosition(); << 334 currentPosition = aTrack.GetPosition();
363 // create a new track object << 335 // create a new track object
364 G4Track* secondary = new G4Track( products << 336 G4Track* secondary = new G4Track( products->PopProducts(),
365 finalGlobalTime , 337 finalGlobalTime ,
366 currentPosition ); 338 currentPosition );
367 // switch on good for tracking flag << 339 // switch on good for tracking flag
368 secondary->SetGoodForTrackingFlag(); << 340 secondary->SetGoodForTrackingFlag();
369 secondary->SetTouchableHandle(thand); << 341 // add the secondary track in the List
370 // add the secondary track in the List << 342 fParticleChangeForDecay.AddSecondary(secondary);
371 fParticleChangeForDecay.AddSecondary(secon <<
372 } 343 }
373 delete products; << 344 if (!isPreAssigned) delete products;
374 << 345
375 // Kill the parent particle 346 // Kill the parent particle
376 fParticleChangeForDecay.ProposeTrackStatus( << 347 fParticleChangeForDecay.SetStatusChange( fStopAndKill ) ;
377 fParticleChangeForDecay.ProposeLocalEnergyDe << 348 fParticleChangeForDecay.SetLocalEnergyDeposit(energyDeposit);
378 fParticleChangeForDecay.ProposeLocalTime( fi << 349 fParticleChangeForDecay.SetTimeChange( finalGlobalTime );
379 << 350 // reset NumberOfInteractionLengthLeft
380 // Clear NumberOfInteractionLengthLeft <<
381 ClearNumberOfInteractionLengthLeft(); 351 ClearNumberOfInteractionLengthLeft();
382 << 352
383 return &fParticleChangeForDecay ; 353 return &fParticleChangeForDecay ;
384 } 354 }
385 355
386 void G4Decay::DaughterPolarization(const G4Tra <<
387 { <<
388 // empty implementation <<
389 } <<
390 <<
391 <<
392 <<
393 void G4Decay::StartTracking(G4Track*) <<
394 { <<
395 currentInteractionLength = -1.0; <<
396 ResetNumberOfInteractionLengthLeft(); <<
397 <<
398 fRemainderLifeTime = -1.0; <<
399 } <<
400 <<
401 void G4Decay::EndTracking() <<
402 { <<
403 // Clear NumberOfInteractionLengthLeft <<
404 ClearNumberOfInteractionLengthLeft(); <<
405 <<
406 currentInteractionLength = -1.0; <<
407 } <<
408 <<
409 <<
410 G4double G4Decay::PostStepGetPhysicalInteracti <<
411 const G4Track& tr <<
412 G4double previo <<
413 G4ForceCondition* <<
414 ) <<
415 { <<
416 // condition is set to "Not Forced" <<
417 *condition = NotForced; <<
418 <<
419 // pre-assigned Decay time <<
420 G4double pTime = track.GetDynamicParticle()- <<
421 G4double aLife = track.GetDynamicParticle()- <<
422 <<
423 if (pTime < 0.) { <<
424 // normal case <<
425 if ( previousStepSize > 0.0){ <<
426 // subtract NumberOfInteractionLengthLef <<
427 SubtractNumberOfInteractionLengthLeft(pr <<
428 if(theNumberOfInteractionLengthLeft<0.){ <<
429 theNumberOfInteractionLengthLeft=perMillion; <<
430 } <<
431 fRemainderLifeTime = theNumberOfInteract <<
432 } <<
433 // get mean free path <<
434 currentInteractionLength = GetMeanFreePath <<
435 <<
436 #ifdef G4VERBOSE <<
437 if ((currentInteractionLength <=0.0) || (v <<
438 G4cout << "G4Decay::PostStepGetPhysicalI <<
439 track.GetDynamicParticle()->DumpInfo(); <<
440 G4cout << " in Material " << track.GetM <<
441 G4cout << "MeanFreePath = " << currentIn <<
442 } <<
443 #endif <<
444 <<
445 G4double value; <<
446 if (currentInteractionLength <DBL_MAX) { <<
447 value = theNumberOfInteractionLengthLeft <<
448 //fRemainderLifeTime = theNumberOfIntera <<
449 } else { <<
450 value = DBL_MAX; <<
451 } <<
452 <<
453 return value; <<
454 <<
455 } else { <<
456 //pre-assigned Decay time case <<
457 // reminder proper time <<
458 fRemainderLifeTime = pTime - track.GetProp <<
459 if (fRemainderLifeTime <= 0.0) fRemainderL <<
460 <<
461 G4double rvalue=0.0; <<
462 // use pre-assigned Decay time to determin <<
463 if (aLife>0.0) { <<
464 // ordinary particle <<
465 rvalue = (fRemainderLifeTime/aLife)*GetM <<
466 } else { <<
467 // shortlived particle <<
468 rvalue = c_light * fRemainderLifeTime; <<
469 // by using normalized kinetic energy (= <<
470 G4double aMass = track.GetDynamicParti <<
471 rvalue *= track.GetDynamicParticle()->Get <<
472 } <<
473 return rvalue; <<
474 } <<
475 } <<
476 <<
477 G4double G4Decay::AtRestGetPhysicalInteraction <<
478 const G4Track& tr <<
479 G4ForceCondition* <<
480 ) <<
481 { <<
482 // condition is set to "Not Forced" <<
483 *condition = NotForced; <<
484 <<
485 G4double pTime = track.GetDynamicParticle()- <<
486 if (pTime >= 0.) { <<
487 fRemainderLifeTime = pTime - track.GetProp <<
488 if (fRemainderLifeTime <= 0.0) fRemainderL <<
489 } else { <<
490 fRemainderLifeTime = <<
491 theNumberOfInteractionLengthLeft * GetMe <<
492 } <<
493 return fRemainderLifeTime; <<
494 } <<
495 356
496 357
497 void G4Decay::SetExtDecayer(G4VExtDecayer* val <<
498 { <<
499 pExtDecayer = val; <<
500 <<
501 // set Process Sub Type <<
502 if ( pExtDecayer !=0 ) { <<
503 SetProcessSubType(static_cast<int>(DECAY_E <<
504 } <<
505 } <<
506 358
507 G4VParticleChange* G4Decay::PostStepDoIt( <<
508 const G4Track& aTrack, <<
509 const G4Step& aStep <<
510 ) <<
511 { <<
512 if ( (aTrack.GetTrackStatus() == fStopButAli <<
513 (aTrack.GetTrackStatus() == fStopAndKil <<
514 fParticleChangeForDecay.Initialize(aTrack) <<
515 return &fParticleChangeForDecay; <<
516 } else { <<
517 return DecayIt(aTrack, aStep); <<
518 } <<
519 } <<
520 359
521 void G4Decay::ProcessDescription(std::ostream& <<
522 { <<
523 outFile << GetProcessName() << ": Decay of p <<
524 << "kinematics of daughters are dertermine <<
525 << " or by PreAssignedDecayProducts\ <<
526 } <<
527 360