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26 // 26 //
>> 27 // $Id: G4Decay.cc 92056 2015-08-14 13:33:43Z gcosmo $
27 // 28 //
28 // 29 //
29 // ------------------------------------------- 30 // --------------------------------------------------------------
30 // GEANT 4 class implementation file 31 // GEANT 4 class implementation file
31 // 32 //
32 // History: first implementation, based o 33 // History: first implementation, based on object model of
33 // 2nd December 1995, G.Cosmo 34 // 2nd December 1995, G.Cosmo
34 // 7 July 1996 H.Kurashige 35 // 7 July 1996 H.Kurashige
35 // ------------------------------------------- 36 // ------------------------------------------------------------
36 // remove BuildPhysicsTable() 28 Nov. 1997 37 // remove BuildPhysicsTable() 28 Nov. 1997 H.Kurashige
37 // change DBL_EPSIRON to DBL_MIN 14 Dec. 19 38 // change DBL_EPSIRON to DBL_MIN 14 Dec. 1997 H.Kurashige
38 // modified for new ParticleChange 12 Mar. 1 39 // modified for new ParticleChange 12 Mar. 1998 H.Kurashige
39 // modified for "GoodForTrackingFlag" 19 Jun 40 // modified for "GoodForTrackingFlag" 19 June 1998 H.Kurashige
40 // rename thePhysicsTable to aPhyscisTable 2 41 // rename thePhysicsTable to aPhyscisTable 2 Aug. 1998 H.Kurashige
41 // modified IsApplicable in order to protect 42 // modified IsApplicable in order to protect the decay from registered
42 // to resonances 12 Dec. 1998 H.Kurashi 43 // to resonances 12 Dec. 1998 H.Kurashige
43 // remove G4ParticleMomentum 6 Feb. 99 H.Ku 44 // remove G4ParticleMomentum 6 Feb. 99 H.Kurashige
44 // modified IsApplicable to activate G4Deca 45 // modified IsApplicable to activate G4Decay for resonances 1 Mar. 00 H.Kurashige
45 // Add External Decayer 23 Feb. 2001 46 // Add External Decayer 23 Feb. 2001 H.Kurashige
46 // change LowestBinValue,HighestBinValue and 47 // change LowestBinValue,HighestBinValue and TotBin(200) 9 Feb. 2002
47 // 48 //
48 49
49 #include "G4Decay.hh" 50 #include "G4Decay.hh"
50 51
51 #include "G4PhysicalConstants.hh" 52 #include "G4PhysicalConstants.hh"
52 #include "G4SystemOfUnits.hh" 53 #include "G4SystemOfUnits.hh"
53 #include "G4DynamicParticle.hh" 54 #include "G4DynamicParticle.hh"
54 #include "G4DecayProducts.hh" 55 #include "G4DecayProducts.hh"
55 #include "G4DecayTable.hh" 56 #include "G4DecayTable.hh"
56 #include "G4VDecayChannel.hh" 57 #include "G4VDecayChannel.hh"
57 #include "G4PhysicsLogVector.hh" 58 #include "G4PhysicsLogVector.hh"
58 #include "G4ParticleChangeForDecay.hh" 59 #include "G4ParticleChangeForDecay.hh"
59 #include "G4VExtDecayer.hh" 60 #include "G4VExtDecayer.hh"
60 61
61 // constructor 62 // constructor
62 G4Decay::G4Decay(const G4String& processName) 63 G4Decay::G4Decay(const G4String& processName)
63 :G4VRestDiscret 64 :G4VRestDiscreteProcess(processName, fDecay),
64 verboseLevel(1), 65 verboseLevel(1),
65 HighestValue(2 66 HighestValue(20.0),
66 fRemainderLifeTime(-1.0), 67 fRemainderLifeTime(-1.0),
67 pExtDecayer(nu << 68 pExtDecayer(0)
68 { 69 {
69 // set Process Sub Type 70 // set Process Sub Type
70 SetProcessSubType(static_cast<int>(DECAY)); 71 SetProcessSubType(static_cast<int>(DECAY));
71 72
72 #ifdef G4VERBOSE 73 #ifdef G4VERBOSE
73 if (GetVerboseLevel()>1) { 74 if (GetVerboseLevel()>1) {
74 G4cout << "G4Decay constructor " << " Na 75 G4cout << "G4Decay constructor " << " Name:" << processName << G4endl;
75 } 76 }
76 #endif 77 #endif
77 78
78 pParticleChange = &fParticleChangeForDecay; 79 pParticleChange = &fParticleChangeForDecay;
79 } 80 }
80 81
81 G4Decay::~G4Decay() 82 G4Decay::~G4Decay()
82 { 83 {
83 if (pExtDecayer != nullptr) { << 84 if (pExtDecayer) {
84 delete pExtDecayer; 85 delete pExtDecayer;
85 } 86 }
86 } 87 }
87 88
88 G4bool G4Decay::IsApplicable(const G4ParticleD 89 G4bool G4Decay::IsApplicable(const G4ParticleDefinition& aParticleType)
89 { 90 {
90 // check if the particle is stable? 91 // check if the particle is stable?
91 if (aParticleType.GetPDGLifeTime() <0.0) { 92 if (aParticleType.GetPDGLifeTime() <0.0) {
92 return false; 93 return false;
93 } else if (aParticleType.GetPDGMass() <= 0. 94 } else if (aParticleType.GetPDGMass() <= 0.0*MeV) {
94 return false; 95 return false;
95 } else { 96 } else {
96 return true; 97 return true;
97 } 98 }
98 } 99 }
99 100
100 G4double G4Decay::GetMeanLifeTime(const G4Trac 101 G4double G4Decay::GetMeanLifeTime(const G4Track& aTrack ,
101 G4ForceCondi 102 G4ForceCondition*)
102 { 103 {
103 // returns the mean free path in GEANT4 int 104 // returns the mean free path in GEANT4 internal units
104 G4double meanlife; 105 G4double meanlife;
105 106
106 // get particle 107 // get particle
107 const G4DynamicParticle* aParticle = aTrack 108 const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
108 const G4ParticleDefinition* aParticleDef = 109 const G4ParticleDefinition* aParticleDef = aParticle->GetDefinition();
109 G4double aLife = aParticleDef->GetPDGLifeTi 110 G4double aLife = aParticleDef->GetPDGLifeTime();
110 111
111 // check if the particle is stable? 112 // check if the particle is stable?
112 if (aParticleDef->GetPDGStable()) { 113 if (aParticleDef->GetPDGStable()) {
113 //1000000 times the life time of the unive 114 //1000000 times the life time of the universe
114 meanlife = 1e24 * s; 115 meanlife = 1e24 * s;
115 116
116 } else { 117 } else {
117 meanlife = aLife; 118 meanlife = aLife;
118 } 119 }
119 120
120 #ifdef G4VERBOSE 121 #ifdef G4VERBOSE
121 if (GetVerboseLevel()>1) { 122 if (GetVerboseLevel()>1) {
122 G4cout << "mean life time: "<< meanlife/n 123 G4cout << "mean life time: "<< meanlife/ns << "[ns]" << G4endl;
123 } 124 }
124 #endif 125 #endif
125 126
126 return meanlife; 127 return meanlife;
127 } 128 }
128 129
129 G4double G4Decay::GetMeanFreePath(const G4Trac 130 G4double G4Decay::GetMeanFreePath(const G4Track& aTrack,G4double, G4ForceCondition*)
130 { 131 {
131 // get particle 132 // get particle
132 const G4DynamicParticle* aParticle = aTrack 133 const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
133 const G4ParticleDefinition* aParticleDef = 134 const G4ParticleDefinition* aParticleDef = aParticle->GetDefinition();
134 G4double aMass = aParticle->GetMass(); 135 G4double aMass = aParticle->GetMass();
135 G4double aLife = aParticleDef->GetPDGLifeTi 136 G4double aLife = aParticleDef->GetPDGLifeTime();
136 137
137 138
138 // returns the mean free path in GEANT4 in 139 // returns the mean free path in GEANT4 internal units
139 G4double pathlength; 140 G4double pathlength;
140 G4double aCtau = c_light * aLife; 141 G4double aCtau = c_light * aLife;
141 142
142 // check if the particle is stable? 143 // check if the particle is stable?
143 if (aParticleDef->GetPDGStable()) { 144 if (aParticleDef->GetPDGStable()) {
144 pathlength = DBL_MAX; 145 pathlength = DBL_MAX;
145 146
146 //check if the particle has very short life 147 //check if the particle has very short life time ?
147 } else if (aCtau < DBL_MIN) { 148 } else if (aCtau < DBL_MIN) {
148 pathlength = DBL_MIN; 149 pathlength = DBL_MIN;
149 150
150 } else { 151 } else {
151 //calculate the mean free path 152 //calculate the mean free path
152 // by using normalized kinetic energy (= E 153 // by using normalized kinetic energy (= Ekin/mass)
153 G4double rKineticEnergy = aParticle->Ge 154 G4double rKineticEnergy = aParticle->GetKineticEnergy()/aMass;
154 if ( rKineticEnergy > HighestValue) { 155 if ( rKineticEnergy > HighestValue) {
155 // gamma >> 1 156 // gamma >> 1
156 pathlength = ( rKineticEnergy + 1.0)* a 157 pathlength = ( rKineticEnergy + 1.0)* aCtau;
157 } else if ( rKineticEnergy < DBL_MIN ) { 158 } else if ( rKineticEnergy < DBL_MIN ) {
158 // too slow particle 159 // too slow particle
159 #ifdef G4VERBOSE 160 #ifdef G4VERBOSE
160 if (GetVerboseLevel()>1) { 161 if (GetVerboseLevel()>1) {
161 G4cout << "G4Decay::GetMeanFreePath() !!p 162 G4cout << "G4Decay::GetMeanFreePath() !!particle stops!!";
162 G4cout << aParticleDef->GetParticleNa 163 G4cout << aParticleDef->GetParticleName() << G4endl;
163 G4cout << "KineticEnergy:" << aParticle->Ge 164 G4cout << "KineticEnergy:" << aParticle->GetKineticEnergy()/GeV <<"[GeV]";
164 } 165 }
165 #endif 166 #endif
166 pathlength = DBL_MIN; 167 pathlength = DBL_MIN;
167 } else { 168 } else {
168 // beta <1 169 // beta <1
169 pathlength = (aParticle->GetTotalMoment 170 pathlength = (aParticle->GetTotalMomentum())/aMass*aCtau ;
170 } 171 }
171 } 172 }
172 return pathlength; 173 return pathlength;
173 } 174 }
174 175
175 void G4Decay::BuildPhysicsTable(const G4Partic 176 void G4Decay::BuildPhysicsTable(const G4ParticleDefinition&)
176 { 177 {
177 return; 178 return;
178 } 179 }
179 180
180 G4VParticleChange* G4Decay::DecayIt(const G4Tr 181 G4VParticleChange* G4Decay::DecayIt(const G4Track& aTrack, const G4Step& )
181 { 182 {
182 // The DecayIt() method returns by pointer a 183 // The DecayIt() method returns by pointer a particle-change object.
183 // Units are expressed in GEANT4 internal un 184 // Units are expressed in GEANT4 internal units.
184 185
185 // Initialize ParticleChange 186 // Initialize ParticleChange
186 // all members of G4VParticleChange are 187 // all members of G4VParticleChange are set to equal to
187 // corresponding member in G4Track 188 // corresponding member in G4Track
188 fParticleChangeForDecay.Initialize(aTrack); 189 fParticleChangeForDecay.Initialize(aTrack);
189 190
190 // get particle 191 // get particle
191 const G4DynamicParticle* aParticle = aTrack. 192 const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
192 const G4ParticleDefinition* aParticleDef = a 193 const G4ParticleDefinition* aParticleDef = aParticle->GetDefinition();
193 194
194 // check if the particle is stable 195 // check if the particle is stable
195 if (aParticleDef->GetPDGStable()) return &fP 196 if (aParticleDef->GetPDGStable()) return &fParticleChangeForDecay ;
196 197
197 198
198 //check if thePreAssignedDecayProducts exist 199 //check if thePreAssignedDecayProducts exists
199 const G4DecayProducts* o_products = (aPartic 200 const G4DecayProducts* o_products = (aParticle->GetPreAssignedDecayProducts());
200 G4bool isPreAssigned = (o_products != nullpt << 201 G4bool isPreAssigned = (o_products != 0);
201 G4DecayProducts* products = nullptr; << 202 G4DecayProducts* products = 0;
202 203
203 // decay table 204 // decay table
204 G4DecayTable *decaytable = aParticleDef->G 205 G4DecayTable *decaytable = aParticleDef->GetDecayTable();
205 206
206 // check if external decayer exists 207 // check if external decayer exists
207 G4bool isExtDecayer = (decaytable == nullptr << 208 G4bool isExtDecayer = (decaytable == 0) && (pExtDecayer !=0);
208 209
209 // Error due to NO Decay Table 210 // Error due to NO Decay Table
210 if ( (decaytable == nullptr) && !isExtDecaye << 211 if ( (decaytable == 0) && !isExtDecayer &&!isPreAssigned ){
211 if (GetVerboseLevel()>0) { 212 if (GetVerboseLevel()>0) {
212 G4cout << "G4Decay::DoIt : decay table 213 G4cout << "G4Decay::DoIt : decay table not defined for ";
213 G4cout << aParticle->GetDefinition()->Ge 214 G4cout << aParticle->GetDefinition()->GetParticleName()<< G4endl;
214 } 215 }
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 ", 216 G4Exception( "G4Decay::DecayIt ",
222 "DECAY101",JustWarning, ed); << 217 "DECAY101",JustWarning,
>> 218 "Decay table is not defined");
223 219
224 fParticleChangeForDecay.SetNumberOfSeconda 220 fParticleChangeForDecay.SetNumberOfSecondaries(0);
225 // Kill the parent particle 221 // Kill the parent particle
226 fParticleChangeForDecay.ProposeTrackStatus 222 fParticleChangeForDecay.ProposeTrackStatus( fStopAndKill ) ;
227 fParticleChangeForDecay.ProposeLocalEnergy 223 fParticleChangeForDecay.ProposeLocalEnergyDeposit(0.0);
228 224
229 ClearNumberOfInteractionLengthLeft(); 225 ClearNumberOfInteractionLengthLeft();
230 return &fParticleChangeForDecay ; 226 return &fParticleChangeForDecay ;
231 } 227 }
232 228
233 if (isPreAssigned) { 229 if (isPreAssigned) {
234 // copy decay products 230 // copy decay products
235 products = new G4DecayProducts(*o_products 231 products = new G4DecayProducts(*o_products);
236 } else if ( isExtDecayer ) { 232 } else if ( isExtDecayer ) {
237 // decay according to external decayer 233 // decay according to external decayer
238 products = pExtDecayer->ImportDecayProduct 234 products = pExtDecayer->ImportDecayProducts(aTrack);
239 } else { 235 } else {
240 // Decay according to decay table. 236 // Decay according to decay table.
241 // Keep trying to choose a candidate decay 237 // Keep trying to choose a candidate decay channel if the dynamic mass
242 // of the decaying particle is below the s 238 // of the decaying particle is below the sum of the PDG masses of the
243 // candidate daughter particles. 239 // candidate daughter particles.
244 // This is needed because the decay table 240 // This is needed because the decay table used in Geant4 is based on
245 // the assumption of nominal PDG masses, b 241 // the assumption of nominal PDG masses, but a wide resonance can have
246 // a dynamic masses well below its nominal 242 // a dynamic masses well below its nominal PDG masses, and therefore
247 // some of its decay channels can be below 243 // some of its decay channels can be below the kinematical threshold.
248 // Note that, for simplicity, we ignore he 244 // Note that, for simplicity, we ignore here the possibility that
249 // one or more of the candidate daughter p 245 // one or more of the candidate daughter particles can be, in turn,
250 // wide resonance. However, if this is the 246 // wide resonance. However, if this is the case, and the channel is
251 // accepted, then the masses of the resona 247 // accepted, then the masses of the resonance daughter particles will
252 // be sampled by taking into account their 248 // be sampled by taking into account their widths.
253 G4VDecayChannel* decaychannel = nullptr; << 249 G4VDecayChannel* decaychannel = 0;
254 G4double massParent = aParticle->GetMass() 250 G4double massParent = aParticle->GetMass();
255 decaychannel = decaytable->SelectADecayCha 251 decaychannel = decaytable->SelectADecayChannel(massParent);
256 if ( decaychannel == nullptr) { << 252 if ( decaychannel ==0) {
257 // decay channel not found 253 // decay channel not found
258 G4ExceptionDescription ed; << 254 G4Exception("G4Decay::DoIt", "DECAY003", FatalException,
259 ed << "Can not determine decay channel f << 255 " can not determine decay channel ");
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 } <<
283 G4Exception("G4Decay::DoIt", "DECAY003", <<
284 } else { 256 } else {
285 // execute DecayIt() 257 // execute DecayIt()
286 #ifdef G4VERBOSE 258 #ifdef G4VERBOSE
287 G4int temp = decaychannel->GetVerboseLev 259 G4int temp = decaychannel->GetVerboseLevel();
288 if (GetVerboseLevel()>1) { 260 if (GetVerboseLevel()>1) {
289 G4cout << "G4Decay::DoIt : selected decay c 261 G4cout << "G4Decay::DoIt : selected decay channel addr:"
290 << decaychannel <<G4endl; 262 << decaychannel <<G4endl;
291 decaychannel->SetVerboseLevel(GetVerboseLeve 263 decaychannel->SetVerboseLevel(GetVerboseLevel());
292 } 264 }
293 #endif 265 #endif
294 products = decaychannel->DecayIt(aPartic 266 products = decaychannel->DecayIt(aParticle->GetMass());
295 #ifdef G4VERBOSE 267 #ifdef G4VERBOSE
296 if (GetVerboseLevel()>1) { 268 if (GetVerboseLevel()>1) {
297 decaychannel->SetVerboseLevel(temp); 269 decaychannel->SetVerboseLevel(temp);
298 } 270 }
299 #endif 271 #endif
300 #ifdef G4VERBOSE 272 #ifdef G4VERBOSE
301 if (GetVerboseLevel()>2) { 273 if (GetVerboseLevel()>2) {
302 if (! products->IsChecked() ) products->Dump 274 if (! products->IsChecked() ) products->DumpInfo();
303 } 275 }
304 #endif 276 #endif
305 } 277 }
306 } 278 }
307 279
308 // get parent particle information ......... 280 // get parent particle information ...................................
309 G4double ParentEnergy = aParticle->GetTot 281 G4double ParentEnergy = aParticle->GetTotalEnergy();
310 G4double ParentMass = aParticle->GetMas 282 G4double ParentMass = aParticle->GetMass();
311 if (ParentEnergy < ParentMass) { 283 if (ParentEnergy < ParentMass) {
312 G4ExceptionDescription ed; << 284 if (GetVerboseLevel()>0) {
313 ed << "Total Energy is less than its mass << 285 G4cout << "G4Decay::DoIt : Total Energy is less than its mass" << G4endl;
314 << "\n Particle: " << aParticle->GetDef << 286 G4cout << " Particle: " << aParticle->GetDefinition()->GetParticleName();
315 << "\n Energy:" << ParentEnergy/MeV << 287 G4cout << " Energy:" << ParentEnergy/MeV << "[MeV]";
316 << "\n Mass:" << ParentMass/MeV << << 288 G4cout << " Mass:" << ParentMass/MeV << "[MeV]";
>> 289 G4cout << G4endl;
>> 290 }
317 G4Exception( "G4Decay::DecayIt ", 291 G4Exception( "G4Decay::DecayIt ",
318 "DECAY102",JustWarning, ed); << 292 "DECAY102",JustWarning,
>> 293 "Total Energy is less than its mass");
319 ParentEnergy = ParentMass; 294 ParentEnergy = ParentMass;
320 } 295 }
321 296
322 G4ThreeVector ParentDirection(aParticle->Get 297 G4ThreeVector ParentDirection(aParticle->GetMomentumDirection());
323 298
324 //boost all decay products to laboratory fra 299 //boost all decay products to laboratory frame
325 G4double energyDeposit = 0.0; 300 G4double energyDeposit = 0.0;
326 G4double finalGlobalTime = aTrack.GetGlobalT 301 G4double finalGlobalTime = aTrack.GetGlobalTime();
327 G4double finalLocalTime = aTrack.GetLocalTim 302 G4double finalLocalTime = aTrack.GetLocalTime();
328 if (aTrack.GetTrackStatus() == fStopButAlive 303 if (aTrack.GetTrackStatus() == fStopButAlive ){
329 // AtRest case 304 // AtRest case
330 finalGlobalTime += fRemainderLifeTime; 305 finalGlobalTime += fRemainderLifeTime;
331 finalLocalTime += fRemainderLifeTime; 306 finalLocalTime += fRemainderLifeTime;
332 energyDeposit += aParticle->GetKineticEner 307 energyDeposit += aParticle->GetKineticEnergy();
333 if (isPreAssigned) products->Boost( Parent 308 if (isPreAssigned) products->Boost( ParentEnergy, ParentDirection);
334 } else { 309 } else {
335 // PostStep case 310 // PostStep case
336 if (!isExtDecayer) products->Boost( Parent 311 if (!isExtDecayer) products->Boost( ParentEnergy, ParentDirection);
337 } 312 }
338 // set polarization for daughter particles 313 // set polarization for daughter particles
339 DaughterPolarization(aTrack, products); 314 DaughterPolarization(aTrack, products);
340 315
341 316
342 //add products in fParticleChangeForDecay 317 //add products in fParticleChangeForDecay
343 G4int numberOfSecondaries = products->entrie 318 G4int numberOfSecondaries = products->entries();
344 fParticleChangeForDecay.SetNumberOfSecondari 319 fParticleChangeForDecay.SetNumberOfSecondaries(numberOfSecondaries);
345 #ifdef G4VERBOSE 320 #ifdef G4VERBOSE
346 if (GetVerboseLevel()>1) { 321 if (GetVerboseLevel()>1) {
347 G4cout << "G4Decay::DoIt : Decay vertex : 322 G4cout << "G4Decay::DoIt : Decay vertex :";
348 G4cout << " Time: " << finalGlobalTime/ns 323 G4cout << " Time: " << finalGlobalTime/ns << "[ns]";
349 G4cout << " X:" << (aTrack.GetPosition()). 324 G4cout << " X:" << (aTrack.GetPosition()).x() /cm << "[cm]";
350 G4cout << " Y:" << (aTrack.GetPosition()). 325 G4cout << " Y:" << (aTrack.GetPosition()).y() /cm << "[cm]";
351 G4cout << " Z:" << (aTrack.GetPosition()). 326 G4cout << " Z:" << (aTrack.GetPosition()).z() /cm << "[cm]";
352 G4cout << G4endl; 327 G4cout << G4endl;
353 G4cout << "G4Decay::DoIt : decay products 328 G4cout << "G4Decay::DoIt : decay products in Lab. Frame" << G4endl;
354 products->DumpInfo(); 329 products->DumpInfo();
355 } 330 }
356 #endif 331 #endif
357 G4int index; 332 G4int index;
358 G4ThreeVector currentPosition; 333 G4ThreeVector currentPosition;
359 const G4TouchableHandle thand = aTrack.GetTo 334 const G4TouchableHandle thand = aTrack.GetTouchableHandle();
360 for (index=0; index < numberOfSecondaries; i << 335 for (index=0; index < numberOfSecondaries; index++)
361 // get current position of the track << 336 {
362 currentPosition = aTrack.GetPosition(); << 337 // get current position of the track
363 // create a new track object << 338 currentPosition = aTrack.GetPosition();
364 G4Track* secondary = new G4Track( products << 339 // create a new track object
>> 340 G4Track* secondary = new G4Track( products->PopProducts(),
365 finalGlobalTime , 341 finalGlobalTime ,
366 currentPosition ); 342 currentPosition );
367 // switch on good for tracking flag << 343 // switch on good for tracking flag
368 secondary->SetGoodForTrackingFlag(); << 344 secondary->SetGoodForTrackingFlag();
369 secondary->SetTouchableHandle(thand); << 345 secondary->SetTouchableHandle(thand);
370 // add the secondary track in the List << 346 // add the secondary track in the List
371 fParticleChangeForDecay.AddSecondary(secon << 347 fParticleChangeForDecay.AddSecondary(secondary);
372 } 348 }
373 delete products; 349 delete products;
374 << 350
375 // Kill the parent particle 351 // Kill the parent particle
376 fParticleChangeForDecay.ProposeTrackStatus( 352 fParticleChangeForDecay.ProposeTrackStatus( fStopAndKill ) ;
377 fParticleChangeForDecay.ProposeLocalEnergyDe 353 fParticleChangeForDecay.ProposeLocalEnergyDeposit(energyDeposit);
378 fParticleChangeForDecay.ProposeLocalTime( fi 354 fParticleChangeForDecay.ProposeLocalTime( finalLocalTime );
379 << 355
380 // Clear NumberOfInteractionLengthLeft 356 // Clear NumberOfInteractionLengthLeft
381 ClearNumberOfInteractionLengthLeft(); 357 ClearNumberOfInteractionLengthLeft();
382 << 358
383 return &fParticleChangeForDecay ; 359 return &fParticleChangeForDecay ;
384 } 360 }
385 361
386 void G4Decay::DaughterPolarization(const G4Tra 362 void G4Decay::DaughterPolarization(const G4Track& , G4DecayProducts* )
387 { 363 {
388 // empty implementation <<
389 } 364 }
390 365
391 366
392 367
393 void G4Decay::StartTracking(G4Track*) 368 void G4Decay::StartTracking(G4Track*)
394 { 369 {
395 currentInteractionLength = -1.0; 370 currentInteractionLength = -1.0;
396 ResetNumberOfInteractionLengthLeft(); 371 ResetNumberOfInteractionLengthLeft();
397 372
398 fRemainderLifeTime = -1.0; 373 fRemainderLifeTime = -1.0;
399 } 374 }
400 375
401 void G4Decay::EndTracking() 376 void G4Decay::EndTracking()
402 { 377 {
403 // Clear NumberOfInteractionLengthLeft 378 // Clear NumberOfInteractionLengthLeft
404 ClearNumberOfInteractionLengthLeft(); 379 ClearNumberOfInteractionLengthLeft();
405 380
406 currentInteractionLength = -1.0; 381 currentInteractionLength = -1.0;
407 } 382 }
408 383
409 384
410 G4double G4Decay::PostStepGetPhysicalInteracti 385 G4double G4Decay::PostStepGetPhysicalInteractionLength(
411 const G4Track& tr 386 const G4Track& track,
412 G4double previo 387 G4double previousStepSize,
413 G4ForceCondition* 388 G4ForceCondition* condition
414 ) 389 )
415 { 390 {
416 // condition is set to "Not Forced" 391 // condition is set to "Not Forced"
417 *condition = NotForced; 392 *condition = NotForced;
418 393
419 // pre-assigned Decay time 394 // pre-assigned Decay time
420 G4double pTime = track.GetDynamicParticle()- 395 G4double pTime = track.GetDynamicParticle()->GetPreAssignedDecayProperTime();
421 G4double aLife = track.GetDynamicParticle()- 396 G4double aLife = track.GetDynamicParticle()->GetDefinition()->GetPDGLifeTime();
422 397
423 if (pTime < 0.) { 398 if (pTime < 0.) {
424 // normal case 399 // normal case
425 if ( previousStepSize > 0.0){ 400 if ( previousStepSize > 0.0){
426 // subtract NumberOfInteractionLengthLef 401 // subtract NumberOfInteractionLengthLeft
427 SubtractNumberOfInteractionLengthLeft(pr 402 SubtractNumberOfInteractionLengthLeft(previousStepSize);
428 if(theNumberOfInteractionLengthLeft<0.){ 403 if(theNumberOfInteractionLengthLeft<0.){
429 theNumberOfInteractionLengthLeft=perMillion; 404 theNumberOfInteractionLengthLeft=perMillion;
430 } 405 }
431 fRemainderLifeTime = theNumberOfInteract 406 fRemainderLifeTime = theNumberOfInteractionLengthLeft*aLife;
432 } 407 }
433 // get mean free path 408 // get mean free path
434 currentInteractionLength = GetMeanFreePath 409 currentInteractionLength = GetMeanFreePath(track, previousStepSize, condition);
435 410
436 #ifdef G4VERBOSE 411 #ifdef G4VERBOSE
437 if ((currentInteractionLength <=0.0) || (v 412 if ((currentInteractionLength <=0.0) || (verboseLevel>2)){
438 G4cout << "G4Decay::PostStepGetPhysicalI 413 G4cout << "G4Decay::PostStepGetPhysicalInteractionLength " << G4endl;
439 track.GetDynamicParticle()->DumpInfo(); 414 track.GetDynamicParticle()->DumpInfo();
440 G4cout << " in Material " << track.GetM 415 G4cout << " in Material " << track.GetMaterial()->GetName() <<G4endl;
441 G4cout << "MeanFreePath = " << currentIn 416 G4cout << "MeanFreePath = " << currentInteractionLength/cm << "[cm]" <<G4endl;
442 } 417 }
443 #endif 418 #endif
444 419
445 G4double value; 420 G4double value;
446 if (currentInteractionLength <DBL_MAX) { 421 if (currentInteractionLength <DBL_MAX) {
447 value = theNumberOfInteractionLengthLeft 422 value = theNumberOfInteractionLengthLeft * currentInteractionLength;
448 //fRemainderLifeTime = theNumberOfIntera 423 //fRemainderLifeTime = theNumberOfInteractionLengthLeft*aLife;
449 } else { 424 } else {
450 value = DBL_MAX; 425 value = DBL_MAX;
451 } 426 }
452 427
453 return value; 428 return value;
454 429
455 } else { 430 } else {
456 //pre-assigned Decay time case 431 //pre-assigned Decay time case
457 // reminder proper time 432 // reminder proper time
458 fRemainderLifeTime = pTime - track.GetProp 433 fRemainderLifeTime = pTime - track.GetProperTime();
459 if (fRemainderLifeTime <= 0.0) fRemainderL << 434 if (fRemainderLifeTime <= 0.0) fRemainderLifeTime = DBL_MIN;
460 435
461 G4double rvalue=0.0; 436 G4double rvalue=0.0;
462 // use pre-assigned Decay time to determin 437 // use pre-assigned Decay time to determine PIL
463 if (aLife>0.0) { 438 if (aLife>0.0) {
464 // ordinary particle 439 // ordinary particle
465 rvalue = (fRemainderLifeTime/aLife)*GetM 440 rvalue = (fRemainderLifeTime/aLife)*GetMeanFreePath(track, previousStepSize, condition);
466 } else { 441 } else {
467 // shortlived particle 442 // shortlived particle
468 rvalue = c_light * fRemainderLifeTime; 443 rvalue = c_light * fRemainderLifeTime;
469 // by using normalized kinetic energy (= 444 // by using normalized kinetic energy (= Ekin/mass)
470 G4double aMass = track.GetDynamicParti 445 G4double aMass = track.GetDynamicParticle()->GetMass();
471 rvalue *= track.GetDynamicParticle()->Get 446 rvalue *= track.GetDynamicParticle()->GetTotalMomentum()/aMass;
472 } 447 }
473 return rvalue; 448 return rvalue;
474 } 449 }
475 } 450 }
476 451
477 G4double G4Decay::AtRestGetPhysicalInteraction 452 G4double G4Decay::AtRestGetPhysicalInteractionLength(
478 const G4Track& tr 453 const G4Track& track,
479 G4ForceCondition* 454 G4ForceCondition* condition
480 ) 455 )
481 { 456 {
482 // condition is set to "Not Forced" 457 // condition is set to "Not Forced"
483 *condition = NotForced; 458 *condition = NotForced;
484 459
485 G4double pTime = track.GetDynamicParticle()- 460 G4double pTime = track.GetDynamicParticle()->GetPreAssignedDecayProperTime();
486 if (pTime >= 0.) { 461 if (pTime >= 0.) {
487 fRemainderLifeTime = pTime - track.GetProp 462 fRemainderLifeTime = pTime - track.GetProperTime();
488 if (fRemainderLifeTime <= 0.0) fRemainderL 463 if (fRemainderLifeTime <= 0.0) fRemainderLifeTime = DBL_MIN;
489 } else { 464 } else {
490 fRemainderLifeTime = 465 fRemainderLifeTime =
491 theNumberOfInteractionLengthLeft * GetMe 466 theNumberOfInteractionLengthLeft * GetMeanLifeTime(track, condition);
492 } 467 }
493 return fRemainderLifeTime; 468 return fRemainderLifeTime;
494 } 469 }
495 470
496 471
497 void G4Decay::SetExtDecayer(G4VExtDecayer* val 472 void G4Decay::SetExtDecayer(G4VExtDecayer* val)
498 { 473 {
499 pExtDecayer = val; 474 pExtDecayer = val;
500 475
501 // set Process Sub Type 476 // set Process Sub Type
502 if ( pExtDecayer !=0 ) { 477 if ( pExtDecayer !=0 ) {
503 SetProcessSubType(static_cast<int>(DECAY_E 478 SetProcessSubType(static_cast<int>(DECAY_External));
504 } 479 }
505 } 480 }
506 481
507 G4VParticleChange* G4Decay::PostStepDoIt( 482 G4VParticleChange* G4Decay::PostStepDoIt(
508 const G4Track& aTrack, 483 const G4Track& aTrack,
509 const G4Step& aStep 484 const G4Step& aStep
510 ) 485 )
511 { 486 {
512 if ( (aTrack.GetTrackStatus() == fStopButAli 487 if ( (aTrack.GetTrackStatus() == fStopButAlive ) ||
513 (aTrack.GetTrackStatus() == fStopAndKil 488 (aTrack.GetTrackStatus() == fStopAndKill ) ){
514 fParticleChangeForDecay.Initialize(aTrack) 489 fParticleChangeForDecay.Initialize(aTrack);
515 return &fParticleChangeForDecay; 490 return &fParticleChangeForDecay;
516 } else { 491 } else {
517 return DecayIt(aTrack, aStep); 492 return DecayIt(aTrack, aStep);
518 } 493 }
519 } 494 }
520 495
521 void G4Decay::ProcessDescription(std::ostream& <<
522 { <<
523 outFile << GetProcessName() << ": Decay of p <<
524 << "kinematics of daughters are dertermine <<
525 << " or by PreAssignedDecayProducts\ <<
526 } <<
527 496