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25 // 25 //
26 // 26 //
>> 27 // $Id: G4Decay.cc,v 1.32 2010/10/30 06:51:05 kurasige Exp $
>> 28 // GEANT4 tag $Name: geant4-09-04 $
27 // 29 //
28 // 30 //
29 // ------------------------------------------- 31 // --------------------------------------------------------------
30 // GEANT 4 class implementation file 32 // GEANT 4 class implementation file
31 // 33 //
32 // History: first implementation, based o 34 // History: first implementation, based on object model of
33 // 2nd December 1995, G.Cosmo 35 // 2nd December 1995, G.Cosmo
34 // 7 July 1996 H.Kurashige 36 // 7 July 1996 H.Kurashige
35 // ------------------------------------------- 37 // ------------------------------------------------------------
36 // remove BuildPhysicsTable() 28 Nov. 1997 38 // remove BuildPhysicsTable() 28 Nov. 1997 H.Kurashige
37 // change DBL_EPSIRON to DBL_MIN 14 Dec. 19 39 // change DBL_EPSIRON to DBL_MIN 14 Dec. 1997 H.Kurashige
38 // modified for new ParticleChange 12 Mar. 1 40 // modified for new ParticleChange 12 Mar. 1998 H.Kurashige
39 // modified for "GoodForTrackingFlag" 19 Jun 41 // modified for "GoodForTrackingFlag" 19 June 1998 H.Kurashige
40 // rename thePhysicsTable to aPhyscisTable 2 42 // rename thePhysicsTable to aPhyscisTable 2 Aug. 1998 H.Kurashige
41 // modified IsApplicable in order to protect 43 // modified IsApplicable in order to protect the decay from registered
42 // to resonances 12 Dec. 1998 H.Kurashi 44 // to resonances 12 Dec. 1998 H.Kurashige
43 // remove G4ParticleMomentum 6 Feb. 99 H.Ku 45 // remove G4ParticleMomentum 6 Feb. 99 H.Kurashige
44 // modified IsApplicable to activate G4Deca 46 // modified IsApplicable to activate G4Decay for resonances 1 Mar. 00 H.Kurashige
45 // Add External Decayer 23 Feb. 2001 47 // Add External Decayer 23 Feb. 2001 H.Kurashige
46 // change LowestBinValue,HighestBinValue and 48 // change LowestBinValue,HighestBinValue and TotBin(200) 9 Feb. 2002
47 // 49 //
48 50
49 #include "G4Decay.hh" 51 #include "G4Decay.hh"
50 <<
51 #include "G4PhysicalConstants.hh" <<
52 #include "G4SystemOfUnits.hh" <<
53 #include "G4DynamicParticle.hh" 52 #include "G4DynamicParticle.hh"
54 #include "G4DecayProducts.hh" 53 #include "G4DecayProducts.hh"
55 #include "G4DecayTable.hh" 54 #include "G4DecayTable.hh"
56 #include "G4VDecayChannel.hh" <<
57 #include "G4PhysicsLogVector.hh" 55 #include "G4PhysicsLogVector.hh"
58 #include "G4ParticleChangeForDecay.hh" 56 #include "G4ParticleChangeForDecay.hh"
59 #include "G4VExtDecayer.hh" 57 #include "G4VExtDecayer.hh"
60 58
61 // constructor 59 // constructor
62 G4Decay::G4Decay(const G4String& processName) 60 G4Decay::G4Decay(const G4String& processName)
63 :G4VRestDiscret 61 :G4VRestDiscreteProcess(processName, fDecay),
64 verboseLevel(1), 62 verboseLevel(1),
65 HighestValue(2 63 HighestValue(20.0),
66 fRemainderLifeTime(-1.0), 64 fRemainderLifeTime(-1.0),
67 pExtDecayer(nu << 65 pExtDecayer(0)
68 { 66 {
69 // set Process Sub Type 67 // set Process Sub Type
70 SetProcessSubType(static_cast<int>(DECAY)); 68 SetProcessSubType(static_cast<int>(DECAY));
71 69
72 #ifdef G4VERBOSE 70 #ifdef G4VERBOSE
73 if (GetVerboseLevel()>1) { 71 if (GetVerboseLevel()>1) {
74 G4cout << "G4Decay constructor " << " Na 72 G4cout << "G4Decay constructor " << " Name:" << processName << G4endl;
75 } 73 }
76 #endif 74 #endif
77 75
78 pParticleChange = &fParticleChangeForDecay; 76 pParticleChange = &fParticleChangeForDecay;
79 } 77 }
80 78
81 G4Decay::~G4Decay() 79 G4Decay::~G4Decay()
82 { 80 {
83 if (pExtDecayer != nullptr) { << 81 if (pExtDecayer) {
84 delete pExtDecayer; 82 delete pExtDecayer;
85 } 83 }
86 } 84 }
87 85
88 G4bool G4Decay::IsApplicable(const G4ParticleD 86 G4bool G4Decay::IsApplicable(const G4ParticleDefinition& aParticleType)
89 { 87 {
90 // check if the particle is stable? 88 // check if the particle is stable?
91 if (aParticleType.GetPDGLifeTime() <0.0) { 89 if (aParticleType.GetPDGLifeTime() <0.0) {
92 return false; 90 return false;
93 } else if (aParticleType.GetPDGMass() <= 0. 91 } else if (aParticleType.GetPDGMass() <= 0.0*MeV) {
94 return false; 92 return false;
95 } else { 93 } else {
96 return true; 94 return true;
97 } 95 }
98 } 96 }
99 97
100 G4double G4Decay::GetMeanLifeTime(const G4Trac 98 G4double G4Decay::GetMeanLifeTime(const G4Track& aTrack ,
101 G4ForceCondi 99 G4ForceCondition*)
102 { 100 {
103 // returns the mean free path in GEANT4 int 101 // returns the mean free path in GEANT4 internal units
104 G4double meanlife; 102 G4double meanlife;
105 103
106 // get particle 104 // get particle
107 const G4DynamicParticle* aParticle = aTrack 105 const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
108 const G4ParticleDefinition* aParticleDef = 106 const G4ParticleDefinition* aParticleDef = aParticle->GetDefinition();
109 G4double aLife = aParticleDef->GetPDGLifeTi 107 G4double aLife = aParticleDef->GetPDGLifeTime();
110 108
111 // check if the particle is stable? 109 // check if the particle is stable?
112 if (aParticleDef->GetPDGStable()) { 110 if (aParticleDef->GetPDGStable()) {
113 //1000000 times the life time of the unive << 111 meanlife = DBL_MAX;
114 meanlife = 1e24 * s; <<
115 112
116 } else { 113 } else {
117 meanlife = aLife; 114 meanlife = aLife;
118 } 115 }
119 116
120 #ifdef G4VERBOSE 117 #ifdef G4VERBOSE
121 if (GetVerboseLevel()>1) { 118 if (GetVerboseLevel()>1) {
122 G4cout << "mean life time: "<< meanlife/n 119 G4cout << "mean life time: "<< meanlife/ns << "[ns]" << G4endl;
123 } 120 }
124 #endif 121 #endif
125 122
126 return meanlife; 123 return meanlife;
127 } 124 }
128 125
129 G4double G4Decay::GetMeanFreePath(const G4Trac 126 G4double G4Decay::GetMeanFreePath(const G4Track& aTrack,G4double, G4ForceCondition*)
130 { 127 {
131 // get particle 128 // get particle
132 const G4DynamicParticle* aParticle = aTrack 129 const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
133 const G4ParticleDefinition* aParticleDef = 130 const G4ParticleDefinition* aParticleDef = aParticle->GetDefinition();
134 G4double aMass = aParticle->GetMass(); 131 G4double aMass = aParticle->GetMass();
135 G4double aLife = aParticleDef->GetPDGLifeTi 132 G4double aLife = aParticleDef->GetPDGLifeTime();
136 133
137 134
138 // returns the mean free path in GEANT4 in 135 // returns the mean free path in GEANT4 internal units
139 G4double pathlength; 136 G4double pathlength;
140 G4double aCtau = c_light * aLife; 137 G4double aCtau = c_light * aLife;
141 138
142 // check if the particle is stable? 139 // check if the particle is stable?
143 if (aParticleDef->GetPDGStable()) { 140 if (aParticleDef->GetPDGStable()) {
144 pathlength = DBL_MAX; 141 pathlength = DBL_MAX;
145 142
146 //check if the particle has very short life 143 //check if the particle has very short life time ?
147 } else if (aCtau < DBL_MIN) { 144 } else if (aCtau < DBL_MIN) {
148 pathlength = DBL_MIN; 145 pathlength = DBL_MIN;
149 146
150 } else { 147 } else {
151 //calculate the mean free path 148 //calculate the mean free path
152 // by using normalized kinetic energy (= E 149 // by using normalized kinetic energy (= Ekin/mass)
153 G4double rKineticEnergy = aParticle->Ge 150 G4double rKineticEnergy = aParticle->GetKineticEnergy()/aMass;
154 if ( rKineticEnergy > HighestValue) { 151 if ( rKineticEnergy > HighestValue) {
155 // gamma >> 1 152 // gamma >> 1
156 pathlength = ( rKineticEnergy + 1.0)* a 153 pathlength = ( rKineticEnergy + 1.0)* aCtau;
157 } else if ( rKineticEnergy < DBL_MIN ) { 154 } else if ( rKineticEnergy < DBL_MIN ) {
158 // too slow particle 155 // too slow particle
159 #ifdef G4VERBOSE 156 #ifdef G4VERBOSE
160 if (GetVerboseLevel()>1) { 157 if (GetVerboseLevel()>1) {
161 G4cout << "G4Decay::GetMeanFreePath() !!p 158 G4cout << "G4Decay::GetMeanFreePath() !!particle stops!!";
162 G4cout << aParticleDef->GetParticleNa 159 G4cout << aParticleDef->GetParticleName() << G4endl;
163 G4cout << "KineticEnergy:" << aParticle->Ge 160 G4cout << "KineticEnergy:" << aParticle->GetKineticEnergy()/GeV <<"[GeV]";
164 } 161 }
165 #endif 162 #endif
166 pathlength = DBL_MIN; 163 pathlength = DBL_MIN;
167 } else { 164 } else {
168 // beta <1 165 // beta <1
169 pathlength = (aParticle->GetTotalMoment 166 pathlength = (aParticle->GetTotalMomentum())/aMass*aCtau ;
170 } 167 }
171 } 168 }
172 return pathlength; 169 return pathlength;
173 } 170 }
174 171
175 void G4Decay::BuildPhysicsTable(const G4Partic 172 void G4Decay::BuildPhysicsTable(const G4ParticleDefinition&)
176 { 173 {
177 return; 174 return;
178 } 175 }
179 176
180 G4VParticleChange* G4Decay::DecayIt(const G4Tr 177 G4VParticleChange* G4Decay::DecayIt(const G4Track& aTrack, const G4Step& )
181 { 178 {
182 // The DecayIt() method returns by pointer a 179 // The DecayIt() method returns by pointer a particle-change object.
183 // Units are expressed in GEANT4 internal un 180 // Units are expressed in GEANT4 internal units.
184 181
185 // Initialize ParticleChange 182 // Initialize ParticleChange
186 // all members of G4VParticleChange are 183 // all members of G4VParticleChange are set to equal to
187 // corresponding member in G4Track 184 // corresponding member in G4Track
188 fParticleChangeForDecay.Initialize(aTrack); 185 fParticleChangeForDecay.Initialize(aTrack);
189 186
190 // get particle 187 // get particle
191 const G4DynamicParticle* aParticle = aTrack. 188 const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
192 const G4ParticleDefinition* aParticleDef = a 189 const G4ParticleDefinition* aParticleDef = aParticle->GetDefinition();
193 190
194 // check if the particle is stable 191 // check if the particle is stable
195 if (aParticleDef->GetPDGStable()) return &fP 192 if (aParticleDef->GetPDGStable()) return &fParticleChangeForDecay ;
196 193
197 194
198 //check if thePreAssignedDecayProducts exist 195 //check if thePreAssignedDecayProducts exists
199 const G4DecayProducts* o_products = (aPartic 196 const G4DecayProducts* o_products = (aParticle->GetPreAssignedDecayProducts());
200 G4bool isPreAssigned = (o_products != nullpt << 197 G4bool isPreAssigned = (o_products != 0);
201 G4DecayProducts* products = nullptr; << 198 G4DecayProducts* products = 0;
202 199
203 // decay table 200 // decay table
204 G4DecayTable *decaytable = aParticleDef->G 201 G4DecayTable *decaytable = aParticleDef->GetDecayTable();
205 202
206 // check if external decayer exists 203 // check if external decayer exists
207 G4bool isExtDecayer = (decaytable == nullptr << 204 G4bool isExtDecayer = (decaytable == 0) && (pExtDecayer !=0);
208 205
209 // Error due to NO Decay Table 206 // Error due to NO Decay Table
210 if ( (decaytable == nullptr) && !isExtDecaye << 207 if ( (decaytable == 0) && !isExtDecayer &&!isPreAssigned ){
211 if (GetVerboseLevel()>0) { 208 if (GetVerboseLevel()>0) {
212 G4cout << "G4Decay::DoIt : decay table 209 G4cout << "G4Decay::DoIt : decay table not defined for ";
213 G4cout << aParticle->GetDefinition()->Ge 210 G4cout << aParticle->GetDefinition()->GetParticleName()<< G4endl;
214 } 211 }
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 ", 212 G4Exception( "G4Decay::DecayIt ",
222 "DECAY101",JustWarning, ed); << 213 "No Decay Table",JustWarning,
>> 214 "Decay table is not defined");
223 215
224 fParticleChangeForDecay.SetNumberOfSeconda 216 fParticleChangeForDecay.SetNumberOfSecondaries(0);
225 // Kill the parent particle 217 // Kill the parent particle
226 fParticleChangeForDecay.ProposeTrackStatus 218 fParticleChangeForDecay.ProposeTrackStatus( fStopAndKill ) ;
227 fParticleChangeForDecay.ProposeLocalEnergy 219 fParticleChangeForDecay.ProposeLocalEnergyDeposit(0.0);
228 220
229 ClearNumberOfInteractionLengthLeft(); 221 ClearNumberOfInteractionLengthLeft();
230 return &fParticleChangeForDecay ; 222 return &fParticleChangeForDecay ;
231 } 223 }
232 224
233 if (isPreAssigned) { 225 if (isPreAssigned) {
234 // copy decay products 226 // copy decay products
235 products = new G4DecayProducts(*o_products 227 products = new G4DecayProducts(*o_products);
236 } else if ( isExtDecayer ) { 228 } else if ( isExtDecayer ) {
237 // decay according to external decayer 229 // decay according to external decayer
238 products = pExtDecayer->ImportDecayProduct 230 products = pExtDecayer->ImportDecayProducts(aTrack);
239 } else { 231 } else {
240 // Decay according to decay table. << 232 // decay acoording to decay table
241 // Keep trying to choose a candidate decay << 233 // choose a decay channel
242 // of the decaying particle is below the s << 234 G4VDecayChannel *decaychannel = decaytable->SelectADecayChannel();
243 // candidate daughter particles. << 235 if (decaychannel == 0 ){
244 // This is needed because the decay table <<
245 // the assumption of nominal PDG masses, b <<
246 // a dynamic masses well below its nominal <<
247 // some of its decay channels can be below <<
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 236 // decay channel not found
258 G4ExceptionDescription ed; << 237 G4Exception("G4Decay::DoIt : can not determine decay channel ");
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 } <<
283 G4Exception("G4Decay::DoIt", "DECAY003", <<
284 } else { 238 } else {
285 // execute DecayIt() 239 // execute DecayIt()
286 #ifdef G4VERBOSE 240 #ifdef G4VERBOSE
287 G4int temp = decaychannel->GetVerboseLev 241 G4int temp = decaychannel->GetVerboseLevel();
288 if (GetVerboseLevel()>1) { 242 if (GetVerboseLevel()>1) {
289 G4cout << "G4Decay::DoIt : selected decay c << 243 G4cout << "G4Decay::DoIt : selected decay channel addr:" << decaychannel <<G4endl;
290 << decaychannel <<G4endl; <<
291 decaychannel->SetVerboseLevel(GetVerboseLeve 244 decaychannel->SetVerboseLevel(GetVerboseLevel());
292 } 245 }
293 #endif 246 #endif
294 products = decaychannel->DecayIt(aPartic 247 products = decaychannel->DecayIt(aParticle->GetMass());
295 #ifdef G4VERBOSE 248 #ifdef G4VERBOSE
296 if (GetVerboseLevel()>1) { 249 if (GetVerboseLevel()>1) {
297 decaychannel->SetVerboseLevel(temp); 250 decaychannel->SetVerboseLevel(temp);
298 } 251 }
299 #endif 252 #endif
300 #ifdef G4VERBOSE 253 #ifdef G4VERBOSE
301 if (GetVerboseLevel()>2) { 254 if (GetVerboseLevel()>2) {
302 if (! products->IsChecked() ) products->Dump 255 if (! products->IsChecked() ) products->DumpInfo();
303 } 256 }
304 #endif 257 #endif
305 } 258 }
306 } 259 }
307 260
308 // get parent particle information ......... 261 // get parent particle information ...................................
309 G4double ParentEnergy = aParticle->GetTot 262 G4double ParentEnergy = aParticle->GetTotalEnergy();
310 G4double ParentMass = aParticle->GetMas 263 G4double ParentMass = aParticle->GetMass();
311 if (ParentEnergy < ParentMass) { 264 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; 265 ParentEnergy = ParentMass;
>> 266 if (GetVerboseLevel()>0) {
>> 267 G4cout << "G4Decay::DoIt : Total Energy is less than its mass" << G4endl;
>> 268 G4cout << " Particle: " << aParticle->GetDefinition()->GetParticleName();
>> 269 G4cout << " Energy:" << ParentEnergy/MeV << "[MeV]";
>> 270 G4cout << " Mass:" << ParentMass/MeV << "[MeV]";
>> 271 G4cout << G4endl;
>> 272 }
320 } 273 }
321 274
322 G4ThreeVector ParentDirection(aParticle->Get 275 G4ThreeVector ParentDirection(aParticle->GetMomentumDirection());
323 276
324 //boost all decay products to laboratory fra 277 //boost all decay products to laboratory frame
325 G4double energyDeposit = 0.0; 278 G4double energyDeposit = 0.0;
326 G4double finalGlobalTime = aTrack.GetGlobalT 279 G4double finalGlobalTime = aTrack.GetGlobalTime();
327 G4double finalLocalTime = aTrack.GetLocalTim <<
328 if (aTrack.GetTrackStatus() == fStopButAlive 280 if (aTrack.GetTrackStatus() == fStopButAlive ){
329 // AtRest case 281 // AtRest case
330 finalGlobalTime += fRemainderLifeTime; 282 finalGlobalTime += fRemainderLifeTime;
331 finalLocalTime += fRemainderLifeTime; <<
332 energyDeposit += aParticle->GetKineticEner 283 energyDeposit += aParticle->GetKineticEnergy();
333 if (isPreAssigned) products->Boost( Parent 284 if (isPreAssigned) products->Boost( ParentEnergy, ParentDirection);
334 } else { 285 } else {
335 // PostStep case 286 // PostStep case
336 if (!isExtDecayer) products->Boost( Parent 287 if (!isExtDecayer) products->Boost( ParentEnergy, ParentDirection);
337 } 288 }
>> 289
338 // set polarization for daughter particles 290 // set polarization for daughter particles
339 DaughterPolarization(aTrack, products); 291 DaughterPolarization(aTrack, products);
340 292
341 293
342 //add products in fParticleChangeForDecay 294 //add products in fParticleChangeForDecay
343 G4int numberOfSecondaries = products->entrie 295 G4int numberOfSecondaries = products->entries();
344 fParticleChangeForDecay.SetNumberOfSecondari 296 fParticleChangeForDecay.SetNumberOfSecondaries(numberOfSecondaries);
345 #ifdef G4VERBOSE 297 #ifdef G4VERBOSE
346 if (GetVerboseLevel()>1) { 298 if (GetVerboseLevel()>1) {
347 G4cout << "G4Decay::DoIt : Decay vertex : 299 G4cout << "G4Decay::DoIt : Decay vertex :";
348 G4cout << " Time: " << finalGlobalTime/ns 300 G4cout << " Time: " << finalGlobalTime/ns << "[ns]";
349 G4cout << " X:" << (aTrack.GetPosition()). 301 G4cout << " X:" << (aTrack.GetPosition()).x() /cm << "[cm]";
350 G4cout << " Y:" << (aTrack.GetPosition()). 302 G4cout << " Y:" << (aTrack.GetPosition()).y() /cm << "[cm]";
351 G4cout << " Z:" << (aTrack.GetPosition()). 303 G4cout << " Z:" << (aTrack.GetPosition()).z() /cm << "[cm]";
352 G4cout << G4endl; 304 G4cout << G4endl;
353 G4cout << "G4Decay::DoIt : decay products 305 G4cout << "G4Decay::DoIt : decay products in Lab. Frame" << G4endl;
354 products->DumpInfo(); 306 products->DumpInfo();
355 } 307 }
356 #endif 308 #endif
357 G4int index; 309 G4int index;
358 G4ThreeVector currentPosition; 310 G4ThreeVector currentPosition;
359 const G4TouchableHandle thand = aTrack.GetTo 311 const G4TouchableHandle thand = aTrack.GetTouchableHandle();
360 for (index=0; index < numberOfSecondaries; i << 312 for (index=0; index < numberOfSecondaries; index++)
361 // get current position of the track << 313 {
362 currentPosition = aTrack.GetPosition(); << 314 // get current position of the track
363 // create a new track object << 315 currentPosition = aTrack.GetPosition();
364 G4Track* secondary = new G4Track( products << 316 // create a new track object
>> 317 G4Track* secondary = new G4Track( products->PopProducts(),
365 finalGlobalTime , 318 finalGlobalTime ,
366 currentPosition ); 319 currentPosition );
367 // switch on good for tracking flag << 320 // switch on good for tracking flag
368 secondary->SetGoodForTrackingFlag(); << 321 secondary->SetGoodForTrackingFlag();
369 secondary->SetTouchableHandle(thand); << 322 secondary->SetTouchableHandle(thand);
370 // add the secondary track in the List << 323 // add the secondary track in the List
371 fParticleChangeForDecay.AddSecondary(secon << 324 fParticleChangeForDecay.AddSecondary(secondary);
372 } 325 }
373 delete products; 326 delete products;
374 << 327
375 // Kill the parent particle 328 // Kill the parent particle
376 fParticleChangeForDecay.ProposeTrackStatus( 329 fParticleChangeForDecay.ProposeTrackStatus( fStopAndKill ) ;
377 fParticleChangeForDecay.ProposeLocalEnergyDe 330 fParticleChangeForDecay.ProposeLocalEnergyDeposit(energyDeposit);
378 fParticleChangeForDecay.ProposeLocalTime( fi << 331 fParticleChangeForDecay.ProposeGlobalTime( finalGlobalTime );
379 <<
380 // Clear NumberOfInteractionLengthLeft 332 // Clear NumberOfInteractionLengthLeft
381 ClearNumberOfInteractionLengthLeft(); 333 ClearNumberOfInteractionLengthLeft();
382 << 334
383 return &fParticleChangeForDecay ; 335 return &fParticleChangeForDecay ;
384 } 336 }
385 337
386 void G4Decay::DaughterPolarization(const G4Tra 338 void G4Decay::DaughterPolarization(const G4Track& , G4DecayProducts* )
387 { 339 {
388 // empty implementation <<
389 } 340 }
390 341
391 342
392 343
393 void G4Decay::StartTracking(G4Track*) 344 void G4Decay::StartTracking(G4Track*)
394 { 345 {
395 currentInteractionLength = -1.0; 346 currentInteractionLength = -1.0;
396 ResetNumberOfInteractionLengthLeft(); 347 ResetNumberOfInteractionLengthLeft();
397 348
398 fRemainderLifeTime = -1.0; 349 fRemainderLifeTime = -1.0;
399 } 350 }
400 351
401 void G4Decay::EndTracking() 352 void G4Decay::EndTracking()
402 { 353 {
403 // Clear NumberOfInteractionLengthLeft 354 // Clear NumberOfInteractionLengthLeft
404 ClearNumberOfInteractionLengthLeft(); 355 ClearNumberOfInteractionLengthLeft();
405 356
406 currentInteractionLength = -1.0; 357 currentInteractionLength = -1.0;
407 } 358 }
408 359
409 360
410 G4double G4Decay::PostStepGetPhysicalInteracti 361 G4double G4Decay::PostStepGetPhysicalInteractionLength(
411 const G4Track& tr 362 const G4Track& track,
412 G4double previo 363 G4double previousStepSize,
413 G4ForceCondition* 364 G4ForceCondition* condition
414 ) 365 )
415 { 366 {
>> 367
416 // condition is set to "Not Forced" 368 // condition is set to "Not Forced"
417 *condition = NotForced; 369 *condition = NotForced;
418 370
419 // pre-assigned Decay time 371 // pre-assigned Decay time
420 G4double pTime = track.GetDynamicParticle()- 372 G4double pTime = track.GetDynamicParticle()->GetPreAssignedDecayProperTime();
421 G4double aLife = track.GetDynamicParticle()- 373 G4double aLife = track.GetDynamicParticle()->GetDefinition()->GetPDGLifeTime();
422 374
423 if (pTime < 0.) { 375 if (pTime < 0.) {
424 // normal case 376 // normal case
425 if ( previousStepSize > 0.0){ 377 if ( previousStepSize > 0.0){
426 // subtract NumberOfInteractionLengthLef 378 // subtract NumberOfInteractionLengthLeft
427 SubtractNumberOfInteractionLengthLeft(pr 379 SubtractNumberOfInteractionLengthLeft(previousStepSize);
428 if(theNumberOfInteractionLengthLeft<0.){ 380 if(theNumberOfInteractionLengthLeft<0.){
429 theNumberOfInteractionLengthLeft=perMillion; 381 theNumberOfInteractionLengthLeft=perMillion;
430 } 382 }
431 fRemainderLifeTime = theNumberOfInteract 383 fRemainderLifeTime = theNumberOfInteractionLengthLeft*aLife;
432 } 384 }
433 // get mean free path 385 // get mean free path
434 currentInteractionLength = GetMeanFreePath 386 currentInteractionLength = GetMeanFreePath(track, previousStepSize, condition);
435 387
436 #ifdef G4VERBOSE 388 #ifdef G4VERBOSE
437 if ((currentInteractionLength <=0.0) || (v 389 if ((currentInteractionLength <=0.0) || (verboseLevel>2)){
438 G4cout << "G4Decay::PostStepGetPhysicalI 390 G4cout << "G4Decay::PostStepGetPhysicalInteractionLength " << G4endl;
439 track.GetDynamicParticle()->DumpInfo(); 391 track.GetDynamicParticle()->DumpInfo();
440 G4cout << " in Material " << track.GetM 392 G4cout << " in Material " << track.GetMaterial()->GetName() <<G4endl;
441 G4cout << "MeanFreePath = " << currentIn 393 G4cout << "MeanFreePath = " << currentInteractionLength/cm << "[cm]" <<G4endl;
442 } 394 }
443 #endif 395 #endif
444 396
445 G4double value; 397 G4double value;
446 if (currentInteractionLength <DBL_MAX) { 398 if (currentInteractionLength <DBL_MAX) {
447 value = theNumberOfInteractionLengthLeft 399 value = theNumberOfInteractionLengthLeft * currentInteractionLength;
448 //fRemainderLifeTime = theNumberOfIntera <<
449 } else { 400 } else {
450 value = DBL_MAX; 401 value = DBL_MAX;
451 } 402 }
452 403
453 return value; 404 return value;
454 405
455 } else { 406 } else {
456 //pre-assigned Decay time case 407 //pre-assigned Decay time case
457 // reminder proper time 408 // reminder proper time
458 fRemainderLifeTime = pTime - track.GetProp 409 fRemainderLifeTime = pTime - track.GetProperTime();
459 if (fRemainderLifeTime <= 0.0) fRemainderL << 410 if (fRemainderLifeTime <= 0.0) fRemainderLifeTime = DBL_MIN;
460 411
461 G4double rvalue=0.0; 412 G4double rvalue=0.0;
462 // use pre-assigned Decay time to determin 413 // use pre-assigned Decay time to determine PIL
463 if (aLife>0.0) { 414 if (aLife>0.0) {
464 // ordinary particle 415 // ordinary particle
465 rvalue = (fRemainderLifeTime/aLife)*GetM 416 rvalue = (fRemainderLifeTime/aLife)*GetMeanFreePath(track, previousStepSize, condition);
466 } else { 417 } else {
467 // shortlived particle 418 // shortlived particle
468 rvalue = c_light * fRemainderLifeTime; 419 rvalue = c_light * fRemainderLifeTime;
469 // by using normalized kinetic energy (= 420 // by using normalized kinetic energy (= Ekin/mass)
470 G4double aMass = track.GetDynamicParti 421 G4double aMass = track.GetDynamicParticle()->GetMass();
471 rvalue *= track.GetDynamicParticle()->Get 422 rvalue *= track.GetDynamicParticle()->GetTotalMomentum()/aMass;
472 } 423 }
473 return rvalue; 424 return rvalue;
474 } 425 }
475 } 426 }
476 427
477 G4double G4Decay::AtRestGetPhysicalInteraction 428 G4double G4Decay::AtRestGetPhysicalInteractionLength(
478 const G4Track& tr 429 const G4Track& track,
479 G4ForceCondition* 430 G4ForceCondition* condition
480 ) 431 )
481 { 432 {
482 // condition is set to "Not Forced" 433 // condition is set to "Not Forced"
483 *condition = NotForced; 434 *condition = NotForced;
484 435
485 G4double pTime = track.GetDynamicParticle()- 436 G4double pTime = track.GetDynamicParticle()->GetPreAssignedDecayProperTime();
486 if (pTime >= 0.) { 437 if (pTime >= 0.) {
487 fRemainderLifeTime = pTime - track.GetProp 438 fRemainderLifeTime = pTime - track.GetProperTime();
488 if (fRemainderLifeTime <= 0.0) fRemainderL 439 if (fRemainderLifeTime <= 0.0) fRemainderLifeTime = DBL_MIN;
489 } else { 440 } else {
490 fRemainderLifeTime = 441 fRemainderLifeTime =
491 theNumberOfInteractionLengthLeft * GetMe 442 theNumberOfInteractionLengthLeft * GetMeanLifeTime(track, condition);
492 } 443 }
493 return fRemainderLifeTime; 444 return fRemainderLifeTime;
494 } 445 }
495 446
496 447
497 void G4Decay::SetExtDecayer(G4VExtDecayer* val 448 void G4Decay::SetExtDecayer(G4VExtDecayer* val)
498 { 449 {
499 pExtDecayer = val; 450 pExtDecayer = val;
500 451
501 // set Process Sub Type 452 // set Process Sub Type
502 if ( pExtDecayer !=0 ) { 453 if ( pExtDecayer !=0 ) {
503 SetProcessSubType(static_cast<int>(DECAY_E 454 SetProcessSubType(static_cast<int>(DECAY_External));
504 } 455 }
505 } <<
506 <<
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 <<
521 void G4Decay::ProcessDescription(std::ostream& <<
522 { <<
523 outFile << GetProcessName() << ": Decay of p <<
524 << "kinematics of daughters are dertermine <<
525 << " or by PreAssignedDecayProducts\ <<
526 } 456 }
527 457