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1 // 1 // 2 // ******************************************* 2 // ******************************************************************** 3 // * License and Disclaimer << 3 // * DISCLAIMER * 4 // * 4 // * * 5 // * The Geant4 software is copyright of th << 5 // * The following disclaimer summarizes all the specific disclaimers * 6 // * the Geant4 Collaboration. It is provided << 6 // * of contributors to this software. The specific disclaimers,which * 7 // * conditions of the Geant4 Software License << 7 // * govern, are listed with their locations in: * 8 // * LICENSE and available at http://cern.ch/ << 8 // * http://cern.ch/geant4/license * 9 // * include a list of copyright holders. << 10 // * 9 // * * 11 // * Neither the authors of this software syst 10 // * Neither the authors of this software system, nor their employing * 12 // * institutes,nor the agencies providing fin 11 // * institutes,nor the agencies providing financial support for this * 13 // * work make any representation or warran 12 // * work make any representation or warranty, express or implied, * 14 // * regarding this software system or assum 13 // * regarding this software system or assume any liability for its * 15 // * use. Please see the license in the file << 14 // * use. * 16 // * for the full disclaimer and the limitatio << 17 // * 15 // * * 18 // * This code implementation is the result << 16 // * This code implementation is the intellectual property of the * 19 // * technical work of the GEANT4 collaboratio << 17 // * GEANT4 collaboration. * 20 // * By using, copying, modifying or distri << 18 // * By copying, distributing or modifying the Program (or any work * 21 // * any work based on the software) you ag << 19 // * based on the Program) you indicate your acceptance of this * 22 // * use in resulting scientific publicati << 20 // * statement, and all its terms. * 23 // * acceptance of all terms of the Geant4 Sof << 24 // ******************************************* 21 // ******************************************************************** 25 // 22 // 26 // 23 // >> 24 // $Id: G4Decay.cc,v 1.15 2002/02/12 08:57:20 kurasige Exp $ >> 25 // GEANT4 tag $Name: geant4-04-01 $ 27 // 26 // 28 // 27 // 29 // ------------------------------------------- 28 // -------------------------------------------------------------- 30 // GEANT 4 class implementation file 29 // GEANT 4 class implementation file 31 // 30 // 32 // History: first implementation, based o 31 // History: first implementation, based on object model of 33 // 2nd December 1995, G.Cosmo 32 // 2nd December 1995, G.Cosmo 34 // 7 July 1996 H.Kurashige 33 // 7 July 1996 H.Kurashige 35 // ------------------------------------------- 34 // ------------------------------------------------------------ 36 // remove BuildPhysicsTable() 28 Nov. 1997 35 // remove BuildPhysicsTable() 28 Nov. 1997 H.Kurashige 37 // change DBL_EPSIRON to DBL_MIN 14 Dec. 19 36 // change DBL_EPSIRON to DBL_MIN 14 Dec. 1997 H.Kurashige 38 // modified for new ParticleChange 12 Mar. 1 37 // modified for new ParticleChange 12 Mar. 1998 H.Kurashige 39 // modified for "GoodForTrackingFlag" 19 Jun 38 // modified for "GoodForTrackingFlag" 19 June 1998 H.Kurashige 40 // rename thePhysicsTable to aPhyscisTable 2 39 // rename thePhysicsTable to aPhyscisTable 2 Aug. 1998 H.Kurashige 41 // modified IsApplicable in order to protect 40 // modified IsApplicable in order to protect the decay from registered 42 // to resonances 12 Dec. 1998 H.Kurashi 41 // to resonances 12 Dec. 1998 H.Kurashige 43 // remove G4ParticleMomentum 6 Feb. 99 H.Ku 42 // remove G4ParticleMomentum 6 Feb. 99 H.Kurashige 44 // modified IsApplicable to activate G4Deca 43 // modified IsApplicable to activate G4Decay for resonances 1 Mar. 00 H.Kurashige 45 // Add External Decayer 23 Feb. 2001 44 // Add External Decayer 23 Feb. 2001 H.Kurashige 46 // change LowestBinValue,HighestBinValue and 45 // change LowestBinValue,HighestBinValue and TotBin(200) 9 Feb. 2002 47 // 46 // 48 47 49 #include "G4Decay.hh" 48 #include "G4Decay.hh" 50 << 51 #include "G4PhysicalConstants.hh" << 52 #include "G4SystemOfUnits.hh" << 53 #include "G4DynamicParticle.hh" 49 #include "G4DynamicParticle.hh" 54 #include "G4DecayProducts.hh" 50 #include "G4DecayProducts.hh" 55 #include "G4DecayTable.hh" 51 #include "G4DecayTable.hh" 56 #include "G4VDecayChannel.hh" << 57 #include "G4PhysicsLogVector.hh" 52 #include "G4PhysicsLogVector.hh" 58 #include "G4ParticleChangeForDecay.hh" 53 #include "G4ParticleChangeForDecay.hh" 59 #include "G4VExtDecayer.hh" 54 #include "G4VExtDecayer.hh" 60 55 61 // constructor 56 // constructor 62 G4Decay::G4Decay(const G4String& processName) 57 G4Decay::G4Decay(const G4String& processName) 63 :G4VRestDiscret 58 :G4VRestDiscreteProcess(processName, fDecay), 64 verboseLevel(1), 59 verboseLevel(1), 65 HighestValue(2 60 HighestValue(20.0), 66 fRemainderLifeTime(-1.0), << 61 pExtDecayer(0) 67 pExtDecayer(nu << 68 { 62 { 69 // set Process Sub Type << 70 SetProcessSubType(static_cast<int>(DECAY)); << 71 << 72 #ifdef G4VERBOSE 63 #ifdef G4VERBOSE 73 if (GetVerboseLevel()>1) { 64 if (GetVerboseLevel()>1) { 74 G4cout << "G4Decay constructor " << " Na << 65 G4cerr << "G4Decay constructor " << " Name:" << processName << G4endl; 75 } 66 } 76 #endif 67 #endif 77 << 78 pParticleChange = &fParticleChangeForDecay; 68 pParticleChange = &fParticleChangeForDecay; 79 } 69 } 80 70 81 G4Decay::~G4Decay() 71 G4Decay::~G4Decay() 82 { 72 { 83 if (pExtDecayer != nullptr) { << 73 if (pExtDecayer) { 84 delete pExtDecayer; 74 delete pExtDecayer; 85 } 75 } 86 } 76 } 87 77 88 G4bool G4Decay::IsApplicable(const G4ParticleD 78 G4bool G4Decay::IsApplicable(const G4ParticleDefinition& aParticleType) 89 { 79 { 90 // check if the particle is stable? 80 // check if the particle is stable? 91 if (aParticleType.GetPDGLifeTime() <0.0) { 81 if (aParticleType.GetPDGLifeTime() <0.0) { 92 return false; 82 return false; 93 } else if (aParticleType.GetPDGMass() <= 0. 83 } else if (aParticleType.GetPDGMass() <= 0.0*MeV) { 94 return false; 84 return false; 95 } else { 85 } else { 96 return true; 86 return true; 97 } 87 } 98 } 88 } 99 89 100 G4double G4Decay::GetMeanLifeTime(const G4Trac << 90 G4double G4Decay::GetMeanLifeTime(const G4Track& aTrack, 101 G4ForceCondi 91 G4ForceCondition*) 102 { 92 { >> 93 // get particle type >> 94 const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle(); >> 95 103 // returns the mean free path in GEANT4 int 96 // returns the mean free path in GEANT4 internal units 104 G4double meanlife; 97 G4double meanlife; 105 << 98 G4ParticleDefinition* aParticleDef = aParticle->GetDefinition(); 106 // get particle << 107 const G4DynamicParticle* aParticle = aTrack << 108 const G4ParticleDefinition* aParticleDef = << 109 G4double aLife = aParticleDef->GetPDGLifeTi 99 G4double aLife = aParticleDef->GetPDGLifeTime(); 110 100 111 // check if the particle is stable? 101 // check if the particle is stable? 112 if (aParticleDef->GetPDGStable()) { 102 if (aParticleDef->GetPDGStable()) { 113 //1000000 times the life time of the unive << 103 meanlife = DBL_MAX; 114 meanlife = 1e24 * s; << 115 104 >> 105 } else if (aLife < 0.0) { >> 106 meanlife = DBL_MAX; >> 107 116 } else { 108 } else { 117 meanlife = aLife; 109 meanlife = aLife; 118 } 110 } 119 111 120 #ifdef G4VERBOSE 112 #ifdef G4VERBOSE 121 if (GetVerboseLevel()>1) { 113 if (GetVerboseLevel()>1) { 122 G4cout << "mean life time: "<< meanlife/n 114 G4cout << "mean life time: "<< meanlife/ns << "[ns]" << G4endl; 123 } 115 } 124 #endif 116 #endif 125 117 126 return meanlife; 118 return meanlife; 127 } 119 } 128 120 129 G4double G4Decay::GetMeanFreePath(const G4Trac 121 G4double G4Decay::GetMeanFreePath(const G4Track& aTrack,G4double, G4ForceCondition*) 130 { 122 { 131 // get particle 123 // get particle 132 const G4DynamicParticle* aParticle = aTrack 124 const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle(); 133 const G4ParticleDefinition* aParticleDef = << 134 G4double aMass = aParticle->GetMass(); << 135 G4double aLife = aParticleDef->GetPDGLifeTi << 136 125 137 << 126 // returns the mean free path in GEANT4 internal units 138 // returns the mean free path in GEANT4 in << 139 G4double pathlength; 127 G4double pathlength; 140 G4double aCtau = c_light * aLife; << 128 G4ParticleDefinition* aParticleDef = aParticle->GetDefinition(); >> 129 G4double aCtau = c_light * aParticleDef->GetPDGLifeTime(); >> 130 G4double aMass = aParticle->GetMass(); 141 131 142 // check if the particle is stable? 132 // check if the particle is stable? 143 if (aParticleDef->GetPDGStable()) { 133 if (aParticleDef->GetPDGStable()) { 144 pathlength = DBL_MAX; 134 pathlength = DBL_MAX; 145 135 >> 136 } else if (aCtau < 0.0) { >> 137 pathlength = DBL_MAX; >> 138 146 //check if the particle has very short life 139 //check if the particle has very short life time ? 147 } else if (aCtau < DBL_MIN) { 140 } else if (aCtau < DBL_MIN) { 148 pathlength = DBL_MIN; 141 pathlength = DBL_MIN; 149 142 >> 143 //check if zero mass >> 144 } else if (aMass < DBL_MIN) { >> 145 pathlength = DBL_MAX; >> 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 G4cerr << "G4Decay::GetMeanFreePath() !!particle stops!!"; 162 G4cout << aParticleDef->GetParticleNa << 159 G4cerr << aParticleDef->GetParticleName() << G4endl; 163 G4cout << "KineticEnergy:" << aParticle->Ge << 160 G4cerr << "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 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 ){ >> 208 #ifdef G4VERBOSE 211 if (GetVerboseLevel()>0) { 209 if (GetVerboseLevel()>0) { 212 G4cout << "G4Decay::DoIt : decay table << 210 G4cerr << "G4Decay::DoIt : decay table not defined for "; 213 G4cout << aParticle->GetDefinition()->Ge << 211 G4cerr << aParticle->GetDefinition()->GetParticleName()<< G4endl; 214 } 212 } 215 G4ExceptionDescription ed; << 213 #endif 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 214 fParticleChangeForDecay.SetNumberOfSecondaries(0); 225 // Kill the parent particle 215 // Kill the parent particle 226 fParticleChangeForDecay.ProposeTrackStatus << 216 fParticleChangeForDecay.SetStatusChange( fStopAndKill ) ; 227 fParticleChangeForDecay.ProposeLocalEnergy << 217 fParticleChangeForDecay.SetLocalEnergyDeposit(0.0); 228 218 229 ClearNumberOfInteractionLengthLeft(); 219 ClearNumberOfInteractionLengthLeft(); 230 return &fParticleChangeForDecay ; 220 return &fParticleChangeForDecay ; 231 } 221 } 232 222 233 if (isPreAssigned) { 223 if (isPreAssigned) { 234 // copy decay products 224 // copy decay products 235 products = new G4DecayProducts(*o_products 225 products = new G4DecayProducts(*o_products); 236 } else if ( isExtDecayer ) { 226 } else if ( isExtDecayer ) { 237 // decay according to external decayer 227 // decay according to external decayer 238 products = pExtDecayer->ImportDecayProduct 228 products = pExtDecayer->ImportDecayProducts(aTrack); 239 } else { 229 } else { 240 // Decay according to decay table. << 230 // decay acoording to decay table 241 // Keep trying to choose a candidate decay << 231 // choose a decay channel 242 // of the decaying particle is below the s << 232 G4VDecayChannel *decaychannel = decaytable->SelectADecayChannel(); 243 // candidate daughter particles. << 233 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 234 // decay channel not found 258 G4ExceptionDescription ed; << 235 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 { 236 } else { >> 237 G4int temp = decaychannel->GetVerboseLevel(); 285 // execute DecayIt() 238 // execute DecayIt() 286 #ifdef G4VERBOSE 239 #ifdef G4VERBOSE 287 G4int temp = decaychannel->GetVerboseLev << 288 if (GetVerboseLevel()>1) { 240 if (GetVerboseLevel()>1) { 289 G4cout << "G4Decay::DoIt : selected decay c << 241 G4cerr << "G4Decay::DoIt : selected decay channel addr:" << decaychannel <<G4endl; 290 << decaychannel <<G4endl; << 291 decaychannel->SetVerboseLevel(GetVerboseLeve 242 decaychannel->SetVerboseLevel(GetVerboseLevel()); 292 } 243 } 293 #endif 244 #endif 294 products = decaychannel->DecayIt(aPartic 245 products = decaychannel->DecayIt(aParticle->GetMass()); 295 #ifdef G4VERBOSE 246 #ifdef G4VERBOSE 296 if (GetVerboseLevel()>1) { 247 if (GetVerboseLevel()>1) { 297 decaychannel->SetVerboseLevel(temp); 248 decaychannel->SetVerboseLevel(temp); 298 } 249 } 299 #endif 250 #endif 300 #ifdef G4VERBOSE 251 #ifdef G4VERBOSE 301 if (GetVerboseLevel()>2) { << 252 // for debug 302 if (! products->IsChecked() ) products->Dump << 253 //if (! products->IsChecked() ) products->DumpInfo(); 303 } << 304 #endif 254 #endif 305 } 255 } 306 } 256 } 307 257 308 // get parent particle information ......... 258 // get parent particle information ................................... 309 G4double ParentEnergy = aParticle->GetTot 259 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 260 G4ThreeVector ParentDirection(aParticle->GetMomentumDirection()); 323 261 324 //boost all decay products to laboratory fra 262 //boost all decay products to laboratory frame 325 G4double energyDeposit = 0.0; 263 G4double energyDeposit = 0.0; 326 G4double finalGlobalTime = aTrack.GetGlobalT 264 G4double finalGlobalTime = aTrack.GetGlobalTime(); 327 G4double finalLocalTime = aTrack.GetLocalTim << 328 if (aTrack.GetTrackStatus() == fStopButAlive 265 if (aTrack.GetTrackStatus() == fStopButAlive ){ 329 // AtRest case 266 // AtRest case 330 finalGlobalTime += fRemainderLifeTime; 267 finalGlobalTime += fRemainderLifeTime; 331 finalLocalTime += fRemainderLifeTime; << 332 energyDeposit += aParticle->GetKineticEner 268 energyDeposit += aParticle->GetKineticEnergy(); 333 if (isPreAssigned) products->Boost( Parent << 269 if (isPreAssigned) products->Boost( ParentEnergy, ParentDirection); 334 } else { 270 } else { 335 // PostStep case 271 // PostStep case 336 if (!isExtDecayer) products->Boost( Parent << 272 if (!isExtDecayer) products->Boost( ParentEnergy, ParentDirection); 337 } 273 } 338 // set polarization for daughter particles << 339 DaughterPolarization(aTrack, products); << 340 << 341 274 342 //add products in fParticleChangeForDecay 275 //add products in fParticleChangeForDecay 343 G4int numberOfSecondaries = products->entrie 276 G4int numberOfSecondaries = products->entries(); 344 fParticleChangeForDecay.SetNumberOfSecondari 277 fParticleChangeForDecay.SetNumberOfSecondaries(numberOfSecondaries); 345 #ifdef G4VERBOSE 278 #ifdef G4VERBOSE 346 if (GetVerboseLevel()>1) { 279 if (GetVerboseLevel()>1) { 347 G4cout << "G4Decay::DoIt : Decay vertex : << 280 G4cerr << "G4Decay::DoIt : Decay vertex :"; 348 G4cout << " Time: " << finalGlobalTime/ns << 281 G4cerr << " Time: " << finalGlobalTime/ns << "[ns]"; 349 G4cout << " X:" << (aTrack.GetPosition()). << 282 G4cerr << " X:" << (aTrack.GetPosition()).x() /cm << "[cm]"; 350 G4cout << " Y:" << (aTrack.GetPosition()). << 283 G4cerr << " Y:" << (aTrack.GetPosition()).y() /cm << "[cm]"; 351 G4cout << " Z:" << (aTrack.GetPosition()). << 284 G4cerr << " Z:" << (aTrack.GetPosition()).z() /cm << "[cm]"; 352 G4cout << G4endl; << 285 G4cerr << G4endl; 353 G4cout << "G4Decay::DoIt : decay products << 286 G4cerr << "G4Decay::DoIt : decay products in Lab. Frame" << G4endl; 354 products->DumpInfo(); 287 products->DumpInfo(); 355 } 288 } 356 #endif 289 #endif 357 G4int index; 290 G4int index; 358 G4ThreeVector currentPosition; 291 G4ThreeVector currentPosition; 359 const G4TouchableHandle thand = aTrack.GetTo << 292 for (index=0; index < numberOfSecondaries; index++) 360 for (index=0; index < numberOfSecondaries; i << 293 { 361 // get current position of the track << 294 // get current position of the track 362 currentPosition = aTrack.GetPosition(); << 295 currentPosition = aTrack.GetPosition(); 363 // create a new track object << 296 // create a new track object 364 G4Track* secondary = new G4Track( products << 297 G4Track* secondary = new G4Track( products->PopProducts(), 365 finalGlobalTime , 298 finalGlobalTime , 366 currentPosition ); 299 currentPosition ); 367 // switch on good for tracking flag << 300 // switch on good for tracking flag 368 secondary->SetGoodForTrackingFlag(); << 301 secondary->SetGoodForTrackingFlag(); 369 secondary->SetTouchableHandle(thand); << 302 // add the secondary track in the List 370 // add the secondary track in the List << 303 fParticleChangeForDecay.AddSecondary(secondary); 371 fParticleChangeForDecay.AddSecondary(secon << 372 } 304 } 373 delete products; 305 delete products; 374 << 306 375 // Kill the parent particle 307 // Kill the parent particle 376 fParticleChangeForDecay.ProposeTrackStatus( << 308 fParticleChangeForDecay.SetStatusChange( fStopAndKill ) ; 377 fParticleChangeForDecay.ProposeLocalEnergyDe << 309 fParticleChangeForDecay.SetLocalEnergyDeposit(energyDeposit); 378 fParticleChangeForDecay.ProposeLocalTime( fi << 310 fParticleChangeForDecay.SetTimeChange( finalGlobalTime ); 379 << 311 // reset NumberOfInteractionLengthLeft 380 // Clear NumberOfInteractionLengthLeft << 381 ClearNumberOfInteractionLengthLeft(); 312 ClearNumberOfInteractionLengthLeft(); 382 << 313 383 return &fParticleChangeForDecay ; 314 return &fParticleChangeForDecay ; 384 } 315 } 385 316 386 void G4Decay::DaughterPolarization(const G4Tra << 387 { << 388 // empty implementation << 389 } << 390 << 391 317 392 318 393 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(); << 405 319 406 currentInteractionLength = -1.0; << 407 } << 408 320 409 321 410 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 << 496 << 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 << 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 } << 527 322