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>> 1 // This code implementation is the intellectual property of
>> 2 // the GEANT4 collaboration.
1 // 3 //
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15 // * use. Please see the license in the file <<
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17 // * <<
18 // * This code implementation is the result <<
19 // * technical work of the GEANT4 collaboratio <<
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21 // * any work based on the software) you ag <<
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25 // <<
26 // 7 //
>> 8 // $Id: G4Decay.cc,v 1.8 2001/02/22 13:29:31 kurasige Exp $
>> 9 // GEANT4 tag $Name: geant4-03-01 $
27 // 10 //
28 // 11 //
29 // ------------------------------------------- 12 // --------------------------------------------------------------
30 // GEANT 4 class implementation file 13 // GEANT 4 class implementation file
31 // 14 //
>> 15 // For information related to this code contact:
>> 16 // CERN, CN Division, ASD group
32 // History: first implementation, based o 17 // History: first implementation, based on object model of
33 // 2nd December 1995, G.Cosmo 18 // 2nd December 1995, G.Cosmo
34 // 7 July 1996 H.Kurashige 19 // 7 July 1996 H.Kurashige
35 // ------------------------------------------- 20 // ------------------------------------------------------------
36 // remove BuildPhysicsTable() 28 Nov. 1997 21 // remove BuildPhysicsTable() 28 Nov. 1997 H.Kurashige
37 // change DBL_EPSIRON to DBL_MIN 14 Dec. 19 22 // change DBL_EPSIRON to DBL_MIN 14 Dec. 1997 H.Kurashige
38 // modified for new ParticleChange 12 Mar. 1 23 // modified for new ParticleChange 12 Mar. 1998 H.Kurashige
39 // modified for "GoodForTrackingFlag" 19 Jun 24 // modified for "GoodForTrackingFlag" 19 June 1998 H.Kurashige
40 // rename thePhysicsTable to aPhyscisTable 2 25 // rename thePhysicsTable to aPhyscisTable 2 Aug. 1998 H.Kurashige
41 // modified IsApplicable in order to protect 26 // modified IsApplicable in order to protect the decay from registered
42 // to resonances 12 Dec. 1998 H.Kurashi 27 // to resonances 12 Dec. 1998 H.Kurashige
43 // remove G4ParticleMomentum 6 Feb. 99 H.Ku 28 // remove G4ParticleMomentum 6 Feb. 99 H.Kurashige
44 // modified IsApplicable to activate G4Deca 29 // modified IsApplicable to activate G4Decay for resonances 1 Mar. 00 H.Kurashige
45 // Add External Decayer 23 Feb. 2001 30 // Add External Decayer 23 Feb. 2001 H.Kurashige
46 // change LowestBinValue,HighestBinValue and <<
47 // 31 //
48 32
49 #include "G4Decay.hh" 33 #include "G4Decay.hh"
50 <<
51 #include "G4PhysicalConstants.hh" <<
52 #include "G4SystemOfUnits.hh" <<
53 #include "G4DynamicParticle.hh" 34 #include "G4DynamicParticle.hh"
54 #include "G4DecayProducts.hh" 35 #include "G4DecayProducts.hh"
55 #include "G4DecayTable.hh" 36 #include "G4DecayTable.hh"
56 #include "G4VDecayChannel.hh" <<
57 #include "G4PhysicsLogVector.hh" 37 #include "G4PhysicsLogVector.hh"
58 #include "G4ParticleChangeForDecay.hh" 38 #include "G4ParticleChangeForDecay.hh"
59 #include "G4VExtDecayer.hh" 39 #include "G4VExtDecayer.hh"
60 40
61 // constructor 41 // constructor
62 G4Decay::G4Decay(const G4String& processName) 42 G4Decay::G4Decay(const G4String& processName)
63 :G4VRestDiscret 43 :G4VRestDiscreteProcess(processName, fDecay),
>> 44 HighestBinValue(10.0),
>> 45 LowestBinValue(1.0e-3),
>> 46 TotBin(200),
64 verboseLevel(1), 47 verboseLevel(1),
65 HighestValue(2 << 48 pExtDecayer(0),
66 fRemainderLifeTime(-1.0), << 49 aPhysicsTable(0)
67 pExtDecayer(nu <<
68 { 50 {
69 // set Process Sub Type <<
70 SetProcessSubType(static_cast<int>(DECAY)); <<
71 <<
72 #ifdef G4VERBOSE 51 #ifdef G4VERBOSE
73 if (GetVerboseLevel()>1) { 52 if (GetVerboseLevel()>1) {
74 G4cout << "G4Decay constructor " << " Na << 53 G4cerr << "G4Decay constructor " << " Name:" << processName << G4endl;
75 } 54 }
76 #endif 55 #endif
77 <<
78 pParticleChange = &fParticleChangeForDecay; 56 pParticleChange = &fParticleChangeForDecay;
79 } 57 }
80 58
81 G4Decay::~G4Decay() 59 G4Decay::~G4Decay()
82 { 60 {
83 if (pExtDecayer != nullptr) { << 61 if (aPhysicsTable != 0) {
>> 62 aPhysicsTable->clearAndDestroy();
>> 63 delete aPhysicsTable;
>> 64 }
>> 65 if (pExtDecayer) {
84 delete pExtDecayer; 66 delete pExtDecayer;
85 } 67 }
86 } 68 }
87 69
88 G4bool G4Decay::IsApplicable(const G4ParticleD 70 G4bool G4Decay::IsApplicable(const G4ParticleDefinition& aParticleType)
89 { 71 {
90 // check if the particle is stable? 72 // check if the particle is stable?
91 if (aParticleType.GetPDGLifeTime() <0.0) { 73 if (aParticleType.GetPDGLifeTime() <0.0) {
92 return false; 74 return false;
93 } else if (aParticleType.GetPDGMass() <= 0. 75 } else if (aParticleType.GetPDGMass() <= 0.0*MeV) {
94 return false; 76 return false;
95 } else { 77 } else {
96 return true; 78 return true;
97 } 79 }
98 } 80 }
99 81
100 G4double G4Decay::GetMeanLifeTime(const G4Trac << 82 G4double G4Decay::GetMeanLifeTime(const G4Track& aTrack,
101 G4ForceCondi 83 G4ForceCondition*)
102 { 84 {
>> 85 // get particle type
>> 86 const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
>> 87
103 // returns the mean free path in GEANT4 int 88 // returns the mean free path in GEANT4 internal units
104 G4double meanlife; 89 G4double meanlife;
105 << 90 G4ParticleDefinition* aParticleDef = aParticle->GetDefinition();
106 // get particle <<
107 const G4DynamicParticle* aParticle = aTrack <<
108 const G4ParticleDefinition* aParticleDef = <<
109 G4double aLife = aParticleDef->GetPDGLifeTi 91 G4double aLife = aParticleDef->GetPDGLifeTime();
110 92
>> 93 #ifdef G4VERBOSE
>> 94 if (GetVerboseLevel()>1) {
>> 95 G4cerr << "G4Decay::GetMeanLifeTime() "<< G4endl;
>> 96 G4cerr << "KineticEnergy:" << aParticle->GetKineticEnergy()/GeV <<"[GeV]";
>> 97 G4cerr << "Mass:" << aParticle->GetMass()/GeV <<"[GeV]";
>> 98 G4cerr << "Life time: "<< aLife/ns << "[ns]" << G4endl;
>> 99 }
>> 100 #endif
>> 101
111 // check if the particle is stable? 102 // check if the particle is stable?
112 if (aParticleDef->GetPDGStable()) { 103 if (aParticleDef->GetPDGStable()) {
113 //1000000 times the life time of the unive << 104 meanlife = DBL_MAX;
114 meanlife = 1e24 * s; <<
115 105
>> 106 } else if (aLife < 0.0) {
>> 107 meanlife = DBL_MAX;
>> 108
116 } else { 109 } else {
117 meanlife = aLife; 110 meanlife = aLife;
118 } 111 }
119 112
120 #ifdef G4VERBOSE 113 #ifdef G4VERBOSE
121 if (GetVerboseLevel()>1) { 114 if (GetVerboseLevel()>1) {
122 G4cout << "mean life time: "<< meanlife/n << 115 G4cerr << "mean life time: "<< meanlife/ns << "[ns]" << G4endl;
123 } 116 }
124 #endif 117 #endif
125 118
126 return meanlife; 119 return meanlife;
127 } 120 }
128 121
129 G4double G4Decay::GetMeanFreePath(const G4Trac 122 G4double G4Decay::GetMeanFreePath(const G4Track& aTrack,G4double, G4ForceCondition*)
130 { 123 {
>> 124 // constants
>> 125 G4bool isOutRange ;
>> 126
131 // get particle 127 // get particle
132 const G4DynamicParticle* aParticle = aTrack 128 const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
133 const G4ParticleDefinition* aParticleDef = <<
134 G4double aMass = aParticle->GetMass(); <<
135 G4double aLife = aParticleDef->GetPDGLifeTi <<
136 <<
137 129
138 // returns the mean free path in GEANT4 in << 130 // returns the mean free path in GEANT4 internal units
139 G4double pathlength; 131 G4double pathlength;
140 G4double aCtau = c_light * aLife; << 132 G4ParticleDefinition* aParticleDef = aParticle->GetDefinition();
>> 133 G4double aCtau = c_light * aParticleDef->GetPDGLifeTime();
>> 134 G4double aMass = aParticle->GetMass();
>> 135
>> 136 #ifdef G4VERBOSE
>> 137 if (GetVerboseLevel()>1) {
>> 138 G4cerr << "G4Decay::GetMeanFreePath() "<< G4endl;
>> 139 G4cerr << "KineticEnergy:" << aParticle->GetKineticEnergy()/GeV <<"[GeV]";
>> 140 G4cerr << "Mass:" << aMass/GeV <<"[GeV]";
>> 141 G4cerr << "c*Tau:" << aCtau/m <<"[m]" <<G4endl;
>> 142 }
>> 143 #endif
141 144
142 // check if the particle is stable? 145 // check if the particle is stable?
143 if (aParticleDef->GetPDGStable()) { 146 if (aParticleDef->GetPDGStable()) {
144 pathlength = DBL_MAX; 147 pathlength = DBL_MAX;
145 148
>> 149 } else if (aCtau < 0.0) {
>> 150 pathlength = DBL_MAX;
>> 151
146 //check if the particle has very short life 152 //check if the particle has very short life time ?
147 } else if (aCtau < DBL_MIN) { 153 } else if (aCtau < DBL_MIN) {
148 pathlength = DBL_MIN; 154 pathlength = DBL_MIN;
149 155
>> 156 //check if zero mass
>> 157 } else if (aMass < DBL_MIN) {
>> 158 pathlength = DBL_MAX;
>> 159 #ifdef G4VERBOSE
>> 160 if (GetVerboseLevel()>1) {
>> 161 G4cerr << " Zero Mass particle " << G4endl;
>> 162 }
>> 163 #endif
150 } else { 164 } else {
151 //calculate the mean free path 165 //calculate the mean free path
152 // by using normalized kinetic energy (= E 166 // by using normalized kinetic energy (= Ekin/mass)
153 G4double rKineticEnergy = aParticle->Ge 167 G4double rKineticEnergy = aParticle->GetKineticEnergy()/aMass;
154 if ( rKineticEnergy > HighestValue) { << 168 if ( rKineticEnergy > HighestBinValue) {
155 // gamma >> 1 << 169 // beta >> 1
156 pathlength = ( rKineticEnergy + 1.0)* a 170 pathlength = ( rKineticEnergy + 1.0)* aCtau;
>> 171 } else if ( rKineticEnergy > LowestBinValue) {
>> 172 // check if aPhysicsTable exists
>> 173 if (aPhysicsTable == NULL) BuildPhysicsTable(*aParticleDef);
>> 174 // beta is in the range valid for PhysicsTable
>> 175 pathlength = aCtau *
>> 176 ((*aPhysicsTable)(0))-> GetValue(rKineticEnergy,isOutRange);
157 } else if ( rKineticEnergy < DBL_MIN ) { 177 } else if ( rKineticEnergy < DBL_MIN ) {
158 // too slow particle 178 // too slow particle
159 #ifdef G4VERBOSE 179 #ifdef G4VERBOSE
160 if (GetVerboseLevel()>1) { 180 if (GetVerboseLevel()>1) {
161 G4cout << "G4Decay::GetMeanFreePath() !!p << 181 G4cerr << "G4Decay::GetMeanFreePath() !!particle stops!!";
162 G4cout << aParticleDef->GetParticleNa << 182 G4cerr << aParticleDef->GetParticleName() << G4endl;
163 G4cout << "KineticEnergy:" << aParticle->Ge << 183 G4cerr << "KineticEnergy:" << aParticle->GetKineticEnergy()/GeV <<"[GeV]";
164 } 184 }
165 #endif 185 #endif
166 pathlength = DBL_MIN; 186 pathlength = DBL_MIN;
167 } else { 187 } else {
168 // beta <1 << 188 // beta << 1
169 pathlength = (aParticle->GetTotalMoment 189 pathlength = (aParticle->GetTotalMomentum())/aMass*aCtau ;
170 } 190 }
171 } 191 }
172 return pathlength; << 192 #ifdef G4VERBOSE
>> 193 if (GetVerboseLevel()>1) {
>> 194 G4cerr << "mean free path: "<< pathlength/m << "[m]" << G4endl;
>> 195 }
>> 196 #endif
>> 197 return pathlength;
173 } 198 }
174 199
175 void G4Decay::BuildPhysicsTable(const G4Partic 200 void G4Decay::BuildPhysicsTable(const G4ParticleDefinition&)
176 { 201 {
177 return; << 202 // if aPhysicsTableis has already been created, do nothing
>> 203 if (aPhysicsTable != NULL) return;
>> 204
>> 205 // create aPhysicsTable
>> 206 if (GetVerboseLevel()>1) G4cerr <<" G4Decay::BuildPhysicsTable() "<< G4endl;
>> 207 aPhysicsTable = new G4PhysicsTable(1);
>> 208
>> 209 //create physics vector
>> 210 G4PhysicsLogVector* aVector = new G4PhysicsLogVector(
>> 211 LowestBinValue,
>> 212 HighestBinValue,
>> 213 TotBin);
>> 214
>> 215 G4double beta, gammainv;
>> 216 // fill physics Vector
>> 217 G4int i;
>> 218 for ( i = 0 ; i < TotBin ; i++ ) {
>> 219 gammainv = 1.0/(aVector->GetLowEdgeEnergy(i) + 1.0);
>> 220 beta = sqrt((1.0 - gammainv)*(1.0 +gammainv));
>> 221 aVector->PutValue(i, beta/gammainv);
>> 222 }
>> 223 aPhysicsTable->insert(aVector);
178 } 224 }
179 225
180 G4VParticleChange* G4Decay::DecayIt(const G4Tr 226 G4VParticleChange* G4Decay::DecayIt(const G4Track& aTrack, const G4Step& )
181 { 227 {
182 // The DecayIt() method returns by pointer a 228 // The DecayIt() method returns by pointer a particle-change object.
183 // Units are expressed in GEANT4 internal un 229 // Units are expressed in GEANT4 internal units.
184 230
185 // Initialize ParticleChange 231 // Initialize ParticleChange
186 // all members of G4VParticleChange are 232 // all members of G4VParticleChange are set to equal to
187 // corresponding member in G4Track 233 // corresponding member in G4Track
188 fParticleChangeForDecay.Initialize(aTrack); 234 fParticleChangeForDecay.Initialize(aTrack);
189 235
190 // get particle 236 // get particle
191 const G4DynamicParticle* aParticle = aTrack. 237 const G4DynamicParticle* aParticle = aTrack.GetDynamicParticle();
192 const G4ParticleDefinition* aParticleDef = a << 238 G4ParticleDefinition* aParticleDef = aParticle->GetDefinition();
193 239
194 // check if the particle is stable 240 // check if the particle is stable
195 if (aParticleDef->GetPDGStable()) return &fP 241 if (aParticleDef->GetPDGStable()) return &fParticleChangeForDecay ;
196 242
197 243
198 //check if thePreAssignedDecayProducts exist 244 //check if thePreAssignedDecayProducts exists
199 const G4DecayProducts* o_products = (aPartic 245 const G4DecayProducts* o_products = (aParticle->GetPreAssignedDecayProducts());
200 G4bool isPreAssigned = (o_products != nullpt << 246 G4bool isPreAssigned = (o_products != 0);
201 G4DecayProducts* products = nullptr; << 247 G4DecayProducts* products = 0;
202 248
203 // decay table 249 // decay table
204 G4DecayTable *decaytable = aParticleDef->G 250 G4DecayTable *decaytable = aParticleDef->GetDecayTable();
205 251
206 // check if external decayer exists 252 // check if external decayer exists
207 G4bool isExtDecayer = (decaytable == nullptr << 253 G4bool isExtDecayer = (decaytable == 0) && (pExtDecayer !=0);
208 254
209 // Error due to NO Decay Table 255 // Error due to NO Decay Table
210 if ( (decaytable == nullptr) && !isExtDecaye << 256 if ( (decaytable == 0) && !isExtDecayer &&!isPreAssigned ){
>> 257 #ifdef G4VERBOSE
211 if (GetVerboseLevel()>0) { 258 if (GetVerboseLevel()>0) {
212 G4cout << "G4Decay::DoIt : decay table << 259 G4cerr << "G4Decay::DoIt : decay table not defined for ";
213 G4cout << aParticle->GetDefinition()->Ge << 260 G4cerr << aParticle->GetDefinition()->GetParticleName()<< G4endl;
214 } 261 }
215 G4ExceptionDescription ed; << 262 #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 263 fParticleChangeForDecay.SetNumberOfSecondaries(0);
225 // Kill the parent particle 264 // Kill the parent particle
226 fParticleChangeForDecay.ProposeTrackStatus << 265 fParticleChangeForDecay.SetStatusChange( fStopAndKill ) ;
227 fParticleChangeForDecay.ProposeLocalEnergy << 266 fParticleChangeForDecay.SetLocalEnergyDeposit(0.0);
228 267
229 ClearNumberOfInteractionLengthLeft(); 268 ClearNumberOfInteractionLengthLeft();
230 return &fParticleChangeForDecay ; 269 return &fParticleChangeForDecay ;
231 } 270 }
232 271
233 if (isPreAssigned) { 272 if (isPreAssigned) {
234 // copy decay products 273 // copy decay products
235 products = new G4DecayProducts(*o_products 274 products = new G4DecayProducts(*o_products);
236 } else if ( isExtDecayer ) { 275 } else if ( isExtDecayer ) {
237 // decay according to external decayer 276 // decay according to external decayer
238 products = pExtDecayer->ImportDecayProduct 277 products = pExtDecayer->ImportDecayProducts(aTrack);
239 } else { 278 } else {
240 // Decay according to decay table. << 279 // decay acoording to decay table
241 // Keep trying to choose a candidate decay << 280 // choose a decay channel
242 // of the decaying particle is below the s << 281 G4VDecayChannel *decaychannel = decaytable->SelectADecayChannel();
243 // candidate daughter particles. << 282 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 283 // decay channel not found
258 G4ExceptionDescription ed; << 284 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 { 285 } else {
>> 286 G4int temp;
285 // execute DecayIt() 287 // execute DecayIt()
286 #ifdef G4VERBOSE 288 #ifdef G4VERBOSE
287 G4int temp = decaychannel->GetVerboseLev <<
288 if (GetVerboseLevel()>1) { 289 if (GetVerboseLevel()>1) {
289 G4cout << "G4Decay::DoIt : selected decay c << 290 G4cerr << "G4Decay::DoIt : selected decay channel addr:" << decaychannel <<G4endl;
290 << decaychannel <<G4endl; << 291 temp = decaychannel->GetVerboseLevel();
291 decaychannel->SetVerboseLevel(GetVerboseLeve 292 decaychannel->SetVerboseLevel(GetVerboseLevel());
292 } 293 }
293 #endif 294 #endif
294 products = decaychannel->DecayIt(aPartic 295 products = decaychannel->DecayIt(aParticle->GetMass());
295 #ifdef G4VERBOSE 296 #ifdef G4VERBOSE
296 if (GetVerboseLevel()>1) { 297 if (GetVerboseLevel()>1) {
297 decaychannel->SetVerboseLevel(temp); 298 decaychannel->SetVerboseLevel(temp);
298 } 299 }
299 #endif 300 #endif
300 #ifdef G4VERBOSE 301 #ifdef G4VERBOSE
301 if (GetVerboseLevel()>2) { << 302 // for debug
302 if (! products->IsChecked() ) products->Dump << 303 //if (! products->IsChecked() ) products->DumpInfo();
303 } <<
304 #endif 304 #endif
305 } 305 }
306 } 306 }
307 307
308 // get parent particle information ......... 308 // get parent particle information ...................................
309 G4double ParentEnergy = aParticle->GetTot 309 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 310 G4ThreeVector ParentDirection(aParticle->GetMomentumDirection());
323 311
324 //boost all decay products to laboratory fra 312 //boost all decay products to laboratory frame
325 G4double energyDeposit = 0.0; 313 G4double energyDeposit = 0.0;
326 G4double finalGlobalTime = aTrack.GetGlobalT 314 G4double finalGlobalTime = aTrack.GetGlobalTime();
327 G4double finalLocalTime = aTrack.GetLocalTim <<
328 if (aTrack.GetTrackStatus() == fStopButAlive 315 if (aTrack.GetTrackStatus() == fStopButAlive ){
329 // AtRest case 316 // AtRest case
330 finalGlobalTime += fRemainderLifeTime; 317 finalGlobalTime += fRemainderLifeTime;
331 finalLocalTime += fRemainderLifeTime; <<
332 energyDeposit += aParticle->GetKineticEner 318 energyDeposit += aParticle->GetKineticEnergy();
333 if (isPreAssigned) products->Boost( Parent << 319 if (isPreAssigned) products->Boost( ParentEnergy, ParentDirection);
334 } else { 320 } else {
335 // PostStep case 321 // PostStep case
336 if (!isExtDecayer) products->Boost( Parent << 322 if (!isExtDecayer) products->Boost( ParentEnergy, ParentDirection);
337 } 323 }
338 // set polarization for daughter particles <<
339 DaughterPolarization(aTrack, products); <<
340 <<
341 324
342 //add products in fParticleChangeForDecay 325 //add products in fParticleChangeForDecay
343 G4int numberOfSecondaries = products->entrie 326 G4int numberOfSecondaries = products->entries();
344 fParticleChangeForDecay.SetNumberOfSecondari 327 fParticleChangeForDecay.SetNumberOfSecondaries(numberOfSecondaries);
345 #ifdef G4VERBOSE 328 #ifdef G4VERBOSE
346 if (GetVerboseLevel()>1) { 329 if (GetVerboseLevel()>1) {
347 G4cout << "G4Decay::DoIt : Decay vertex : << 330 G4cerr << "G4Decay::DoIt : Decay vertex :";
348 G4cout << " Time: " << finalGlobalTime/ns << 331 G4cerr << " Time: " << finalGlobalTime/ns << "[ns]";
349 G4cout << " X:" << (aTrack.GetPosition()). << 332 G4cerr << " X:" << (aTrack.GetPosition()).x() /cm << "[cm]";
350 G4cout << " Y:" << (aTrack.GetPosition()). << 333 G4cerr << " Y:" << (aTrack.GetPosition()).y() /cm << "[cm]";
351 G4cout << " Z:" << (aTrack.GetPosition()). << 334 G4cerr << " Z:" << (aTrack.GetPosition()).z() /cm << "[cm]";
352 G4cout << G4endl; << 335 G4cerr << G4endl;
353 G4cout << "G4Decay::DoIt : decay products << 336 G4cerr << "G4Decay::DoIt : decay products in Lab. Frame" << G4endl;
354 products->DumpInfo(); 337 products->DumpInfo();
355 } 338 }
356 #endif 339 #endif
357 G4int index; 340 G4int index;
358 G4ThreeVector currentPosition; 341 G4ThreeVector currentPosition;
359 const G4TouchableHandle thand = aTrack.GetTo << 342 for (index=0; index < numberOfSecondaries; index++)
360 for (index=0; index < numberOfSecondaries; i << 343 {
361 // get current position of the track << 344 // get current position of the track
362 currentPosition = aTrack.GetPosition(); << 345 currentPosition = aTrack.GetPosition();
363 // create a new track object << 346 // create a new track object
364 G4Track* secondary = new G4Track( products << 347 G4Track* secondary = new G4Track( products->PopProducts(),
365 finalGlobalTime , 348 finalGlobalTime ,
366 currentPosition ); 349 currentPosition );
367 // switch on good for tracking flag << 350 // switch on good for tracking flag
368 secondary->SetGoodForTrackingFlag(); << 351 secondary->SetGoodForTrackingFlag();
369 secondary->SetTouchableHandle(thand); << 352 // add the secondary track in the List
370 // add the secondary track in the List << 353 fParticleChangeForDecay.AddSecondary(secondary);
371 fParticleChangeForDecay.AddSecondary(secon <<
372 } 354 }
373 delete products; 355 delete products;
374 << 356
375 // Kill the parent particle 357 // Kill the parent particle
376 fParticleChangeForDecay.ProposeTrackStatus( << 358 fParticleChangeForDecay.SetStatusChange( fStopAndKill ) ;
377 fParticleChangeForDecay.ProposeLocalEnergyDe << 359 fParticleChangeForDecay.SetLocalEnergyDeposit(energyDeposit);
378 fParticleChangeForDecay.ProposeLocalTime( fi << 360 fParticleChangeForDecay.SetTimeChange( finalGlobalTime );
379 << 361 // reset NumberOfInteractionLengthLeft
380 // Clear NumberOfInteractionLengthLeft <<
381 ClearNumberOfInteractionLengthLeft(); 362 ClearNumberOfInteractionLengthLeft();
382 << 363
383 return &fParticleChangeForDecay ; 364 return &fParticleChangeForDecay ;
384 } 365 }
385 366
386 void G4Decay::DaughterPolarization(const G4Tra <<
387 { <<
388 // empty implementation <<
389 } <<
390 367
391 368
392 369
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(); <<
405 370
406 currentInteractionLength = -1.0; <<
407 } <<
408 <<
409 <<
410 G4double G4Decay::PostStepGetPhysicalInteracti <<
411 const G4Track& tr <<
412 G4double previo <<
413 G4ForceCondition* <<
414 ) <<
415 { <<
416 // condition is set to "Not Forced" <<
417 *condition = NotForced; <<
418 <<
419 // pre-assigned Decay time <<
420 G4double pTime = track.GetDynamicParticle()- <<
421 G4double aLife = track.GetDynamicParticle()- <<
422 <<
423 if (pTime < 0.) { <<
424 // normal case <<
425 if ( previousStepSize > 0.0){ <<
426 // subtract NumberOfInteractionLengthLef <<
427 SubtractNumberOfInteractionLengthLeft(pr <<
428 if(theNumberOfInteractionLengthLeft<0.){ <<
429 theNumberOfInteractionLengthLeft=perMillion; <<
430 } <<
431 fRemainderLifeTime = theNumberOfInteract <<
432 } <<
433 // get mean free path <<
434 currentInteractionLength = GetMeanFreePath <<
435 <<
436 #ifdef G4VERBOSE <<
437 if ((currentInteractionLength <=0.0) || (v <<
438 G4cout << "G4Decay::PostStepGetPhysicalI <<
439 track.GetDynamicParticle()->DumpInfo(); <<
440 G4cout << " in Material " << track.GetM <<
441 G4cout << "MeanFreePath = " << currentIn <<
442 } <<
443 #endif <<
444 <<
445 G4double value; <<
446 if (currentInteractionLength <DBL_MAX) { <<
447 value = theNumberOfInteractionLengthLeft <<
448 //fRemainderLifeTime = theNumberOfIntera <<
449 } else { <<
450 value = DBL_MAX; <<
451 } <<
452 <<
453 return value; <<
454 <<
455 } else { <<
456 //pre-assigned Decay time case <<
457 // reminder proper time <<
458 fRemainderLifeTime = pTime - track.GetProp <<
459 if (fRemainderLifeTime <= 0.0) fRemainderL <<
460 <<
461 G4double rvalue=0.0; <<
462 // use pre-assigned Decay time to determin <<
463 if (aLife>0.0) { <<
464 // ordinary particle <<
465 rvalue = (fRemainderLifeTime/aLife)*GetM <<
466 } else { <<
467 // shortlived particle <<
468 rvalue = c_light * fRemainderLifeTime; <<
469 // by using normalized kinetic energy (= <<
470 G4double aMass = track.GetDynamicParti <<
471 rvalue *= track.GetDynamicParticle()->Get <<
472 } <<
473 return rvalue; <<
474 } <<
475 } <<
476 <<
477 G4double G4Decay::AtRestGetPhysicalInteraction <<
478 const G4Track& tr <<
479 G4ForceCondition* <<
480 ) <<
481 { <<
482 // condition is set to "Not Forced" <<
483 *condition = NotForced; <<
484 <<
485 G4double pTime = track.GetDynamicParticle()- <<
486 if (pTime >= 0.) { <<
487 fRemainderLifeTime = pTime - track.GetProp <<
488 if (fRemainderLifeTime <= 0.0) fRemainderL <<
489 } else { <<
490 fRemainderLifeTime = <<
491 theNumberOfInteractionLengthLeft * GetMe <<
492 } <<
493 return fRemainderLifeTime; <<
494 } <<
495 <<
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 } <<
527 371