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1 // 1 // 2 // ******************************************* 2 // ******************************************************************** 3 // * License and Disclaimer 3 // * License and Disclaimer * 4 // * 4 // * * 5 // * The Geant4 software is copyright of th 5 // * The Geant4 software is copyright of the Copyright Holders of * 6 // * the Geant4 Collaboration. It is provided 6 // * the Geant4 Collaboration. It is provided under the terms and * 7 // * conditions of the Geant4 Software License 7 // * conditions of the Geant4 Software License, included in the file * 8 // * LICENSE and available at http://cern.ch/ 8 // * LICENSE and available at http://cern.ch/geant4/license . 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Please see the license in the file LICENSE and URL above * 16 // * for the full disclaimer and the limitatio 16 // * for the full disclaimer and the limitation of liability. * 17 // * 17 // * * 18 // * This code implementation is the result 18 // * This code implementation is the result of the scientific and * 19 // * technical work of the GEANT4 collaboratio 19 // * technical work of the GEANT4 collaboration. * 20 // * By using, copying, modifying or distri 20 // * By using, copying, modifying or distributing the software (or * 21 // * any work based on the software) you ag 21 // * any work based on the software) you agree to acknowledge its * 22 // * use in resulting scientific publicati 22 // * use in resulting scientific publications, and indicate your * 23 // * acceptance of all terms of the Geant4 Sof 23 // * acceptance of all terms of the Geant4 Software license. * 24 // ******************************************* 24 // ******************************************************************** 25 // 25 // 26 // 26 // >> 27 // $Id: G4Decay.cc 79331 2014-02-24 09:38:19Z 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 acoording to decay table 241 // Keep trying to choose a candidate decay << 237 // choose a decay channel 242 // of the decaying particle is below the s << 238 G4VDecayChannel *decaychannel = decaytable->SelectADecayChannel(); 243 // candidate daughter particles. << 239 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 240 // decay channel not found 258 G4ExceptionDescription ed; << 241 G4Exception("G4Decay::DoIt", "DECAY003", FatalException, 259 ed << "Can not determine decay channel f << 242 " 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 { 243 } else { 285 // execute DecayIt() 244 // execute DecayIt() 286 #ifdef G4VERBOSE 245 #ifdef G4VERBOSE 287 G4int temp = decaychannel->GetVerboseLev 246 G4int temp = decaychannel->GetVerboseLevel(); 288 if (GetVerboseLevel()>1) { 247 if (GetVerboseLevel()>1) { 289 G4cout << "G4Decay::DoIt : selected decay c << 248 G4cout << "G4Decay::DoIt : selected decay channel addr:" << decaychannel <<G4endl; 290 << decaychannel <<G4endl; << 291 decaychannel->SetVerboseLevel(GetVerboseLeve 249 decaychannel->SetVerboseLevel(GetVerboseLevel()); 292 } 250 } 293 #endif 251 #endif 294 products = decaychannel->DecayIt(aPartic 252 products = decaychannel->DecayIt(aParticle->GetMass()); 295 #ifdef G4VERBOSE 253 #ifdef G4VERBOSE 296 if (GetVerboseLevel()>1) { 254 if (GetVerboseLevel()>1) { 297 decaychannel->SetVerboseLevel(temp); 255 decaychannel->SetVerboseLevel(temp); 298 } 256 } 299 #endif 257 #endif 300 #ifdef G4VERBOSE 258 #ifdef G4VERBOSE 301 if (GetVerboseLevel()>2) { 259 if (GetVerboseLevel()>2) { 302 if (! products->IsChecked() ) products->Dump 260 if (! products->IsChecked() ) products->DumpInfo(); 303 } 261 } 304 #endif 262 #endif 305 } 263 } 306 } 264 } 307 265 308 // get parent particle information ......... 266 // get parent particle information ................................... 309 G4double ParentEnergy = aParticle->GetTot 267 G4double ParentEnergy = aParticle->GetTotalEnergy(); 310 G4double ParentMass = aParticle->GetMas 268 G4double ParentMass = aParticle->GetMass(); 311 if (ParentEnergy < ParentMass) { 269 if (ParentEnergy < ParentMass) { 312 G4ExceptionDescription ed; << 270 if (GetVerboseLevel()>0) { 313 ed << "Total Energy is less than its mass << 271 G4cout << "G4Decay::DoIt : Total Energy is less than its mass" << G4endl; 314 << "\n Particle: " << aParticle->GetDef << 272 G4cout << " Particle: " << aParticle->GetDefinition()->GetParticleName(); 315 << "\n Energy:" << ParentEnergy/MeV << 273 G4cout << " Energy:" << ParentEnergy/MeV << "[MeV]"; 316 << "\n Mass:" << ParentMass/MeV << << 274 G4cout << " Mass:" << ParentMass/MeV << "[MeV]"; >> 275 G4cout << G4endl; >> 276 } 317 G4Exception( "G4Decay::DecayIt ", 277 G4Exception( "G4Decay::DecayIt ", 318 "DECAY102",JustWarning, ed); << 278 "DECAY102",JustWarning, >> 279 "Total Energy is less than its mass"); 319 ParentEnergy = ParentMass; 280 ParentEnergy = ParentMass; 320 } 281 } 321 282 322 G4ThreeVector ParentDirection(aParticle->Get 283 G4ThreeVector ParentDirection(aParticle->GetMomentumDirection()); 323 284 324 //boost all decay products to laboratory fra 285 //boost all decay products to laboratory frame 325 G4double energyDeposit = 0.0; 286 G4double energyDeposit = 0.0; 326 G4double finalGlobalTime = aTrack.GetGlobalT 287 G4double finalGlobalTime = aTrack.GetGlobalTime(); 327 G4double finalLocalTime = aTrack.GetLocalTim 288 G4double finalLocalTime = aTrack.GetLocalTime(); 328 if (aTrack.GetTrackStatus() == fStopButAlive 289 if (aTrack.GetTrackStatus() == fStopButAlive ){ 329 // AtRest case 290 // AtRest case 330 finalGlobalTime += fRemainderLifeTime; 291 finalGlobalTime += fRemainderLifeTime; 331 finalLocalTime += fRemainderLifeTime; 292 finalLocalTime += fRemainderLifeTime; 332 energyDeposit += aParticle->GetKineticEner 293 energyDeposit += aParticle->GetKineticEnergy(); 333 if (isPreAssigned) products->Boost( Parent 294 if (isPreAssigned) products->Boost( ParentEnergy, ParentDirection); 334 } else { 295 } else { 335 // PostStep case 296 // PostStep case 336 if (!isExtDecayer) products->Boost( Parent 297 if (!isExtDecayer) products->Boost( ParentEnergy, ParentDirection); 337 } 298 } 338 // set polarization for daughter particles 299 // set polarization for daughter particles 339 DaughterPolarization(aTrack, products); 300 DaughterPolarization(aTrack, products); 340 301 341 302 342 //add products in fParticleChangeForDecay 303 //add products in fParticleChangeForDecay 343 G4int numberOfSecondaries = products->entrie 304 G4int numberOfSecondaries = products->entries(); 344 fParticleChangeForDecay.SetNumberOfSecondari 305 fParticleChangeForDecay.SetNumberOfSecondaries(numberOfSecondaries); 345 #ifdef G4VERBOSE 306 #ifdef G4VERBOSE 346 if (GetVerboseLevel()>1) { 307 if (GetVerboseLevel()>1) { 347 G4cout << "G4Decay::DoIt : Decay vertex : 308 G4cout << "G4Decay::DoIt : Decay vertex :"; 348 G4cout << " Time: " << finalGlobalTime/ns 309 G4cout << " Time: " << finalGlobalTime/ns << "[ns]"; 349 G4cout << " X:" << (aTrack.GetPosition()). 310 G4cout << " X:" << (aTrack.GetPosition()).x() /cm << "[cm]"; 350 G4cout << " Y:" << (aTrack.GetPosition()). 311 G4cout << " Y:" << (aTrack.GetPosition()).y() /cm << "[cm]"; 351 G4cout << " Z:" << (aTrack.GetPosition()). 312 G4cout << " Z:" << (aTrack.GetPosition()).z() /cm << "[cm]"; 352 G4cout << G4endl; 313 G4cout << G4endl; 353 G4cout << "G4Decay::DoIt : decay products 314 G4cout << "G4Decay::DoIt : decay products in Lab. Frame" << G4endl; 354 products->DumpInfo(); 315 products->DumpInfo(); 355 } 316 } 356 #endif 317 #endif 357 G4int index; 318 G4int index; 358 G4ThreeVector currentPosition; 319 G4ThreeVector currentPosition; 359 const G4TouchableHandle thand = aTrack.GetTo 320 const G4TouchableHandle thand = aTrack.GetTouchableHandle(); 360 for (index=0; index < numberOfSecondaries; i << 321 for (index=0; index < numberOfSecondaries; index++) 361 // get current position of the track << 322 { 362 currentPosition = aTrack.GetPosition(); << 323 // get current position of the track 363 // create a new track object << 324 currentPosition = aTrack.GetPosition(); 364 G4Track* secondary = new G4Track( products << 325 // create a new track object >> 326 G4Track* secondary = new G4Track( products->PopProducts(), 365 finalGlobalTime , 327 finalGlobalTime , 366 currentPosition ); 328 currentPosition ); 367 // switch on good for tracking flag << 329 // switch on good for tracking flag 368 secondary->SetGoodForTrackingFlag(); << 330 secondary->SetGoodForTrackingFlag(); 369 secondary->SetTouchableHandle(thand); << 331 secondary->SetTouchableHandle(thand); 370 // add the secondary track in the List << 332 // add the secondary track in the List 371 fParticleChangeForDecay.AddSecondary(secon << 333 fParticleChangeForDecay.AddSecondary(secondary); 372 } 334 } 373 delete products; 335 delete products; 374 << 336 375 // Kill the parent particle 337 // Kill the parent particle 376 fParticleChangeForDecay.ProposeTrackStatus( 338 fParticleChangeForDecay.ProposeTrackStatus( fStopAndKill ) ; 377 fParticleChangeForDecay.ProposeLocalEnergyDe 339 fParticleChangeForDecay.ProposeLocalEnergyDeposit(energyDeposit); 378 fParticleChangeForDecay.ProposeLocalTime( fi 340 fParticleChangeForDecay.ProposeLocalTime( finalLocalTime ); 379 << 341 380 // Clear NumberOfInteractionLengthLeft 342 // Clear NumberOfInteractionLengthLeft 381 ClearNumberOfInteractionLengthLeft(); 343 ClearNumberOfInteractionLengthLeft(); 382 << 344 383 return &fParticleChangeForDecay ; 345 return &fParticleChangeForDecay ; 384 } 346 } 385 347 386 void G4Decay::DaughterPolarization(const G4Tra 348 void G4Decay::DaughterPolarization(const G4Track& , G4DecayProducts* ) 387 { 349 { 388 // empty implementation << 389 } 350 } 390 351 391 352 392 353 393 void G4Decay::StartTracking(G4Track*) 354 void G4Decay::StartTracking(G4Track*) 394 { 355 { 395 currentInteractionLength = -1.0; 356 currentInteractionLength = -1.0; 396 ResetNumberOfInteractionLengthLeft(); 357 ResetNumberOfInteractionLengthLeft(); 397 358 398 fRemainderLifeTime = -1.0; 359 fRemainderLifeTime = -1.0; 399 } 360 } 400 361 401 void G4Decay::EndTracking() 362 void G4Decay::EndTracking() 402 { 363 { 403 // Clear NumberOfInteractionLengthLeft 364 // Clear NumberOfInteractionLengthLeft 404 ClearNumberOfInteractionLengthLeft(); 365 ClearNumberOfInteractionLengthLeft(); 405 366 406 currentInteractionLength = -1.0; 367 currentInteractionLength = -1.0; 407 } 368 } 408 369 409 370 410 G4double G4Decay::PostStepGetPhysicalInteracti 371 G4double G4Decay::PostStepGetPhysicalInteractionLength( 411 const G4Track& tr 372 const G4Track& track, 412 G4double previo 373 G4double previousStepSize, 413 G4ForceCondition* 374 G4ForceCondition* condition 414 ) 375 ) 415 { 376 { 416 // condition is set to "Not Forced" 377 // condition is set to "Not Forced" 417 *condition = NotForced; 378 *condition = NotForced; 418 379 419 // pre-assigned Decay time 380 // pre-assigned Decay time 420 G4double pTime = track.GetDynamicParticle()- 381 G4double pTime = track.GetDynamicParticle()->GetPreAssignedDecayProperTime(); 421 G4double aLife = track.GetDynamicParticle()- 382 G4double aLife = track.GetDynamicParticle()->GetDefinition()->GetPDGLifeTime(); 422 383 423 if (pTime < 0.) { 384 if (pTime < 0.) { 424 // normal case 385 // normal case 425 if ( previousStepSize > 0.0){ 386 if ( previousStepSize > 0.0){ 426 // subtract NumberOfInteractionLengthLef 387 // subtract NumberOfInteractionLengthLeft 427 SubtractNumberOfInteractionLengthLeft(pr 388 SubtractNumberOfInteractionLengthLeft(previousStepSize); 428 if(theNumberOfInteractionLengthLeft<0.){ 389 if(theNumberOfInteractionLengthLeft<0.){ 429 theNumberOfInteractionLengthLeft=perMillion; 390 theNumberOfInteractionLengthLeft=perMillion; 430 } 391 } 431 fRemainderLifeTime = theNumberOfInteract 392 fRemainderLifeTime = theNumberOfInteractionLengthLeft*aLife; 432 } 393 } 433 // get mean free path 394 // get mean free path 434 currentInteractionLength = GetMeanFreePath 395 currentInteractionLength = GetMeanFreePath(track, previousStepSize, condition); 435 396 436 #ifdef G4VERBOSE 397 #ifdef G4VERBOSE 437 if ((currentInteractionLength <=0.0) || (v 398 if ((currentInteractionLength <=0.0) || (verboseLevel>2)){ 438 G4cout << "G4Decay::PostStepGetPhysicalI 399 G4cout << "G4Decay::PostStepGetPhysicalInteractionLength " << G4endl; 439 track.GetDynamicParticle()->DumpInfo(); 400 track.GetDynamicParticle()->DumpInfo(); 440 G4cout << " in Material " << track.GetM 401 G4cout << " in Material " << track.GetMaterial()->GetName() <<G4endl; 441 G4cout << "MeanFreePath = " << currentIn 402 G4cout << "MeanFreePath = " << currentInteractionLength/cm << "[cm]" <<G4endl; 442 } 403 } 443 #endif 404 #endif 444 405 445 G4double value; 406 G4double value; 446 if (currentInteractionLength <DBL_MAX) { 407 if (currentInteractionLength <DBL_MAX) { 447 value = theNumberOfInteractionLengthLeft 408 value = theNumberOfInteractionLengthLeft * currentInteractionLength; 448 //fRemainderLifeTime = theNumberOfIntera 409 //fRemainderLifeTime = theNumberOfInteractionLengthLeft*aLife; 449 } else { 410 } else { 450 value = DBL_MAX; 411 value = DBL_MAX; 451 } 412 } 452 413 453 return value; 414 return value; 454 415 455 } else { 416 } else { 456 //pre-assigned Decay time case 417 //pre-assigned Decay time case 457 // reminder proper time 418 // reminder proper time 458 fRemainderLifeTime = pTime - track.GetProp 419 fRemainderLifeTime = pTime - track.GetProperTime(); 459 if (fRemainderLifeTime <= 0.0) fRemainderL << 420 if (fRemainderLifeTime <= 0.0) fRemainderLifeTime = DBL_MIN; 460 421 461 G4double rvalue=0.0; 422 G4double rvalue=0.0; 462 // use pre-assigned Decay time to determin 423 // use pre-assigned Decay time to determine PIL 463 if (aLife>0.0) { 424 if (aLife>0.0) { 464 // ordinary particle 425 // ordinary particle 465 rvalue = (fRemainderLifeTime/aLife)*GetM 426 rvalue = (fRemainderLifeTime/aLife)*GetMeanFreePath(track, previousStepSize, condition); 466 } else { 427 } else { 467 // shortlived particle 428 // shortlived particle 468 rvalue = c_light * fRemainderLifeTime; 429 rvalue = c_light * fRemainderLifeTime; 469 // by using normalized kinetic energy (= 430 // by using normalized kinetic energy (= Ekin/mass) 470 G4double aMass = track.GetDynamicParti 431 G4double aMass = track.GetDynamicParticle()->GetMass(); 471 rvalue *= track.GetDynamicParticle()->Get 432 rvalue *= track.GetDynamicParticle()->GetTotalMomentum()/aMass; 472 } 433 } 473 return rvalue; 434 return rvalue; 474 } 435 } 475 } 436 } 476 437 477 G4double G4Decay::AtRestGetPhysicalInteraction 438 G4double G4Decay::AtRestGetPhysicalInteractionLength( 478 const G4Track& tr 439 const G4Track& track, 479 G4ForceCondition* 440 G4ForceCondition* condition 480 ) 441 ) 481 { 442 { 482 // condition is set to "Not Forced" 443 // condition is set to "Not Forced" 483 *condition = NotForced; 444 *condition = NotForced; 484 445 485 G4double pTime = track.GetDynamicParticle()- 446 G4double pTime = track.GetDynamicParticle()->GetPreAssignedDecayProperTime(); 486 if (pTime >= 0.) { 447 if (pTime >= 0.) { 487 fRemainderLifeTime = pTime - track.GetProp 448 fRemainderLifeTime = pTime - track.GetProperTime(); 488 if (fRemainderLifeTime <= 0.0) fRemainderL 449 if (fRemainderLifeTime <= 0.0) fRemainderLifeTime = DBL_MIN; 489 } else { 450 } else { 490 fRemainderLifeTime = 451 fRemainderLifeTime = 491 theNumberOfInteractionLengthLeft * GetMe 452 theNumberOfInteractionLengthLeft * GetMeanLifeTime(track, condition); 492 } 453 } 493 return fRemainderLifeTime; 454 return fRemainderLifeTime; 494 } 455 } 495 456 496 457 497 void G4Decay::SetExtDecayer(G4VExtDecayer* val 458 void G4Decay::SetExtDecayer(G4VExtDecayer* val) 498 { 459 { 499 pExtDecayer = val; 460 pExtDecayer = val; 500 461 501 // set Process Sub Type 462 // set Process Sub Type 502 if ( pExtDecayer !=0 ) { 463 if ( pExtDecayer !=0 ) { 503 SetProcessSubType(static_cast<int>(DECAY_E 464 SetProcessSubType(static_cast<int>(DECAY_External)); 504 } 465 } 505 } 466 } 506 467 507 G4VParticleChange* G4Decay::PostStepDoIt( 468 G4VParticleChange* G4Decay::PostStepDoIt( 508 const G4Track& aTrack, 469 const G4Track& aTrack, 509 const G4Step& aStep 470 const G4Step& aStep 510 ) 471 ) 511 { 472 { 512 if ( (aTrack.GetTrackStatus() == fStopButAli 473 if ( (aTrack.GetTrackStatus() == fStopButAlive ) || 513 (aTrack.GetTrackStatus() == fStopAndKil 474 (aTrack.GetTrackStatus() == fStopAndKill ) ){ 514 fParticleChangeForDecay.Initialize(aTrack) 475 fParticleChangeForDecay.Initialize(aTrack); 515 return &fParticleChangeForDecay; 476 return &fParticleChangeForDecay; 516 } else { 477 } else { 517 return DecayIt(aTrack, aStep); 478 return DecayIt(aTrack, aStep); 518 } 479 } 519 } 480 } 520 481 521 void G4Decay::ProcessDescription(std::ostream& << 522 { << 523 outFile << GetProcessName() << ": Decay of p << 524 << "kinematics of daughters are dertermine << 525 << " or by PreAssignedDecayProducts\ << 526 } << 527 482