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26 // 26 //
>> 27 // $Id: G4StatMF.cc 67983 2013-03-13 10:42:03Z gcosmo $
27 // 28 //
28 // Hadronic Process: Nuclear De-excitations 29 // Hadronic Process: Nuclear De-excitations
29 // by V. Lara 30 // by V. Lara
30 31
31 #include "G4StatMF.hh" 32 #include "G4StatMF.hh"
32 #include "G4PhysicalConstants.hh" 33 #include "G4PhysicalConstants.hh"
33 #include "G4SystemOfUnits.hh" 34 #include "G4SystemOfUnits.hh"
34 #include "G4Pow.hh" 35 #include "G4Pow.hh"
35 #include "G4PhysicsModelCatalog.hh" <<
36 36
37 G4StatMF::G4StatMF() <<
38 { <<
39 _secID = G4PhysicsModelCatalog::GetModelID(" <<
40 } <<
41 37
42 G4StatMF::~G4StatMF() {} << 38 // Default constructor
>> 39 G4StatMF::G4StatMF() : _theEnsemble(0) {}
>> 40
>> 41
>> 42 // Destructor
>> 43 G4StatMF::~G4StatMF() {} //{if (_theEnsemble != 0) delete _theEnsemble;}
43 44
44 G4FragmentVector* G4StatMF::BreakItUp(const G4 << 45
>> 46 G4FragmentVector * G4StatMF::BreakItUp(const G4Fragment &theFragment)
45 { 47 {
>> 48 // G4FragmentVector * theResult = new G4FragmentVector;
>> 49
46 if (theFragment.GetExcitationEnergy() <= 0.0 50 if (theFragment.GetExcitationEnergy() <= 0.0) {
47 return nullptr; << 51 //G4FragmentVector * theResult = new G4FragmentVector;
>> 52 //theResult->push_back(new G4Fragment(theFragment));
>> 53 return 0;
48 } 54 }
49 55
>> 56
50 // Maximun average multiplicity: M_0 = 2.6 f 57 // Maximun average multiplicity: M_0 = 2.6 for A ~ 200
51 // and M_0 = 3.3 for A <= 110 58 // and M_0 = 3.3 for A <= 110
52 G4double MaxAverageMultiplicity = 59 G4double MaxAverageMultiplicity =
53 G4StatMFParameters::GetMaxAverageMultiplic 60 G4StatMFParameters::GetMaxAverageMultiplicity(theFragment.GetA_asInt());
54 61
55 62
56 // We'll use two kinds of ensembles 63 // We'll use two kinds of ensembles
57 G4StatMFMicroCanonical * theMicrocanonicalEn 64 G4StatMFMicroCanonical * theMicrocanonicalEnsemble = 0;
58 G4StatMFMacroCanonical * theMacrocanonicalEn 65 G4StatMFMacroCanonical * theMacrocanonicalEnsemble = 0;
>> 66
59 67
60 //------------------------------------------ << 68 //-------------------------------------------------------
61 // Direct simulation part (Microcanonical en << 69 // Direct simulation part (Microcanonical ensemble)
62 //------------------------------------------ << 70 //-------------------------------------------------------
63 71
64 // Microcanonical ensemble initialization << 72 // Microcanonical ensemble initialization
65 theMicrocanonicalEnsemble = new G4StatMFMicr 73 theMicrocanonicalEnsemble = new G4StatMFMicroCanonical(theFragment);
66 74
67 G4int Iterations = 0; 75 G4int Iterations = 0;
68 G4int IterationsLimit = 100000; 76 G4int IterationsLimit = 100000;
69 G4double Temperature = 0.0; 77 G4double Temperature = 0.0;
70 78
71 G4bool FirstTime = true; 79 G4bool FirstTime = true;
72 G4StatMFChannel * theChannel = 0; 80 G4StatMFChannel * theChannel = 0;
73 81
74 G4bool ChannelOk; 82 G4bool ChannelOk;
75 do { // Try to de-excite as much as Iterati 83 do { // Try to de-excite as much as IterationLimit permits
76 do { 84 do {
77 85
78 G4double theMeanMult = theMicrocanonical 86 G4double theMeanMult = theMicrocanonicalEnsemble->GetMeanMultiplicity();
79 if (theMeanMult <= MaxAverageMultiplicit 87 if (theMeanMult <= MaxAverageMultiplicity) {
80 // G4cout << "MICROCANONICAL" << G4endl; 88 // G4cout << "MICROCANONICAL" << G4endl;
81 // Choose fragments atomic numbers and charg 89 // Choose fragments atomic numbers and charges from direct simulation
82 theChannel = theMicrocanonicalEnsemble->Choo 90 theChannel = theMicrocanonicalEnsemble->ChooseAandZ(theFragment);
83 _theEnsemble = theMicrocanonicalEnsemble; 91 _theEnsemble = theMicrocanonicalEnsemble;
84 } else { 92 } else {
85 //------------------------------------------ 93 //-----------------------------------------------------
86 // Non direct simulation part (Macrocanonica 94 // Non direct simulation part (Macrocanonical Ensemble)
87 //------------------------------------------ 95 //-----------------------------------------------------
88 if (FirstTime) { 96 if (FirstTime) {
89 // Macrocanonical ensemble initialization 97 // Macrocanonical ensemble initialization
90 theMacrocanonicalEnsemble = new G4StatMFMa 98 theMacrocanonicalEnsemble = new G4StatMFMacroCanonical(theFragment);
91 _theEnsemble = theMacrocanonicalEnsemble; 99 _theEnsemble = theMacrocanonicalEnsemble;
92 FirstTime = false; 100 FirstTime = false;
93 } 101 }
94 // G4cout << "MACROCANONICAL" << G4endl; 102 // G4cout << "MACROCANONICAL" << G4endl;
95 // Select calculated fragment total multipli 103 // Select calculated fragment total multiplicity,
96 // fragment atomic numbers and fragment char 104 // fragment atomic numbers and fragment charges.
97 theChannel = theMacrocanonicalEnsemble->Choo 105 theChannel = theMacrocanonicalEnsemble->ChooseAandZ(theFragment);
98 } 106 }
99 107
100 ChannelOk = theChannel->CheckFragments() 108 ChannelOk = theChannel->CheckFragments();
101 if (!ChannelOk) delete theChannel; 109 if (!ChannelOk) delete theChannel;
102 110
103 // Loop checking, 05-Aug-2015, Vladimir <<
104 } while (!ChannelOk); 111 } while (!ChannelOk);
105 112
106 113
107 if (theChannel->GetMultiplicity() <= 1) { 114 if (theChannel->GetMultiplicity() <= 1) {
108 G4FragmentVector * theResult = new G4Fra 115 G4FragmentVector * theResult = new G4FragmentVector;
109 theResult->push_back(new G4Fragment(theF 116 theResult->push_back(new G4Fragment(theFragment));
110 delete theMicrocanonicalEnsemble; 117 delete theMicrocanonicalEnsemble;
111 if (theMacrocanonicalEnsemble != 0) dele 118 if (theMacrocanonicalEnsemble != 0) delete theMacrocanonicalEnsemble;
112 delete theChannel; 119 delete theChannel;
113 return theResult; 120 return theResult;
114 } 121 }
115 122
116 //-------------------------------------- 123 //--------------------------------------
117 // Second part of simulation procedure. 124 // Second part of simulation procedure.
118 //-------------------------------------- 125 //--------------------------------------
119 126
120 // Find temperature of breaking channel. 127 // Find temperature of breaking channel.
121 Temperature = _theEnsemble->GetMeanTempera 128 Temperature = _theEnsemble->GetMeanTemperature(); // Initial guess for Temperature
122 129
123 if (FindTemperatureOfBreakingChannel(theFr 130 if (FindTemperatureOfBreakingChannel(theFragment,theChannel,Temperature)) break;
124 131
125 // Do not forget to delete this unusable c 132 // Do not forget to delete this unusable channel, for which we failed to find the temperature,
126 // otherwise for very proton-reach nuclei 133 // otherwise for very proton-reach nuclei it would lead to memory leak due to large
127 // number of iterations. N.B. "theChannel" 134 // number of iterations. N.B. "theChannel" is created in G4StatMFMacroCanonical::ChooseZ()
128 135
129 // G4cout << " Iteration # " << Iterations 136 // G4cout << " Iteration # " << Iterations << " Mean Temperature = " << Temperature << G4endl;
130 137
131 delete theChannel; 138 delete theChannel;
132 139
133 // Loop checking, 05-Aug-2015, Vladimir Iv <<
134 } while (Iterations++ < IterationsLimit ); 140 } while (Iterations++ < IterationsLimit );
>> 141
>> 142
135 143
136 // If Iterations >= IterationsLimit means th 144 // If Iterations >= IterationsLimit means that we couldn't solve for temperature
137 if (Iterations >= IterationsLimit) 145 if (Iterations >= IterationsLimit)
138 throw G4HadronicException(__FILE__, __LINE 146 throw G4HadronicException(__FILE__, __LINE__, "G4StatMF::BreakItUp: Was not possible to solve for temperature of breaking channel");
139 << 147
>> 148
140 G4FragmentVector * theResult = theChannel-> 149 G4FragmentVector * theResult = theChannel->
141 GetFragments(theFragment.GetA_asInt(),theF 150 GetFragments(theFragment.GetA_asInt(),theFragment.GetZ_asInt(),Temperature);
142 << 151
>> 152
>> 153
143 // ~~~~~~ Energy conservation Patch !!!!!!!! 154 // ~~~~~~ Energy conservation Patch !!!!!!!!!!!!!!!!!!!!!!
144 // Original nucleus 4-momentum in CM system 155 // Original nucleus 4-momentum in CM system
145 G4LorentzVector InitialMomentum(theFragment. 156 G4LorentzVector InitialMomentum(theFragment.GetMomentum());
146 InitialMomentum.boost(-InitialMomentum.boost 157 InitialMomentum.boost(-InitialMomentum.boostVector());
147 G4double ScaleFactor = 0.0; 158 G4double ScaleFactor = 0.0;
148 G4double SavedScaleFactor = 0.0; 159 G4double SavedScaleFactor = 0.0;
149 do { 160 do {
150 G4double FragmentsEnergy = 0.0; 161 G4double FragmentsEnergy = 0.0;
151 for (auto const & ptr : *theResult) { << 162 G4FragmentVector::iterator j;
152 FragmentsEnergy += ptr->GetMomentum().e( << 163 for (j = theResult->begin(); j != theResult->end(); j++)
153 } << 164 FragmentsEnergy += (*j)->GetMomentum().e();
154 if (0.0 == FragmentsEnergy) { break; } <<
155 SavedScaleFactor = ScaleFactor; 165 SavedScaleFactor = ScaleFactor;
156 ScaleFactor = InitialMomentum.e()/Fragment 166 ScaleFactor = InitialMomentum.e()/FragmentsEnergy;
157 G4ThreeVector ScaledMomentum(0.0,0.0,0.0); 167 G4ThreeVector ScaledMomentum(0.0,0.0,0.0);
158 for (auto const & ptr : *theResult) { << 168 for (j = theResult->begin(); j != theResult->end(); j++) {
159 ScaledMomentum = ScaleFactor * ptr->GetM << 169 ScaledMomentum = ScaleFactor * (*j)->GetMomentum().vect();
160 G4double Mass = ptr->GetMomentum().mag() << 170 G4double Mass = (*j)->GetMomentum().m();
161 G4LorentzVector NewMomentum; 171 G4LorentzVector NewMomentum;
162 NewMomentum.setVect(ScaledMomentum); 172 NewMomentum.setVect(ScaledMomentum);
163 NewMomentum.setE(std::sqrt(ScaledMomentu 173 NewMomentum.setE(std::sqrt(ScaledMomentum.mag2()+Mass*Mass));
164 ptr->SetMomentum(NewMomentum); << 174 (*j)->SetMomentum(NewMomentum);
165 } 175 }
166 // Loop checking, 05-Aug-2015, Vladimir Iv <<
167 } while (ScaleFactor > 1.0+1.e-5 && std::abs 176 } while (ScaleFactor > 1.0+1.e-5 && std::abs(ScaleFactor-SavedScaleFactor)/ScaleFactor > 1.e-10);
168 // ~~~~~~ End of patch !!!!!!!!!!!!!!!!!!!!! 177 // ~~~~~~ End of patch !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
169 178
170 // Perform Lorentz boost 179 // Perform Lorentz boost
171 G4FragmentVector::iterator i; 180 G4FragmentVector::iterator i;
172 for (i = theResult->begin(); i != theResult- 181 for (i = theResult->begin(); i != theResult->end(); i++) {
173 G4LorentzVector FourMom = (*i)->GetMomentu 182 G4LorentzVector FourMom = (*i)->GetMomentum();
174 FourMom.boost(theFragment.GetMomentum().bo 183 FourMom.boost(theFragment.GetMomentum().boostVector());
175 (*i)->SetMomentum(FourMom); 184 (*i)->SetMomentum(FourMom);
176 (*i)->SetCreatorModelID(_secID); << 185 #ifdef PRECOMPOUND_TEST
>> 186 (*i)->SetCreatorModel(G4String("G4StatMF"));
>> 187 #endif
177 } 188 }
178 189
179 // garbage collection 190 // garbage collection
180 delete theMicrocanonicalEnsemble; 191 delete theMicrocanonicalEnsemble;
181 if (theMacrocanonicalEnsemble != 0) delete t 192 if (theMacrocanonicalEnsemble != 0) delete theMacrocanonicalEnsemble;
182 delete theChannel; 193 delete theChannel;
183 194
184 return theResult; 195 return theResult;
185 } 196 }
186 197
187 198
188 G4bool G4StatMF::FindTemperatureOfBreakingChan 199 G4bool G4StatMF::FindTemperatureOfBreakingChannel(const G4Fragment & theFragment,
189 const G4StatMFChannel * aChannel 200 const G4StatMFChannel * aChannel,
190 G4double & Temperature) 201 G4double & Temperature)
191 // This finds temperature of breaking channe 202 // This finds temperature of breaking channel.
192 { 203 {
193 G4int A = theFragment.GetA_asInt(); 204 G4int A = theFragment.GetA_asInt();
194 G4int Z = theFragment.GetZ_asInt(); 205 G4int Z = theFragment.GetZ_asInt();
195 G4double U = theFragment.GetExcitationEnergy 206 G4double U = theFragment.GetExcitationEnergy();
196 207
197 G4double T = std::max(Temperature,0.0012*MeV << 208 G4double T = std::max(Temperature,0.0012*MeV);
>> 209
198 G4double Ta = T; 210 G4double Ta = T;
>> 211 G4double Tb = T;
>> 212
>> 213
199 G4double TotalEnergy = CalcEnergy(A,Z,aChann 214 G4double TotalEnergy = CalcEnergy(A,Z,aChannel,T);
200 215
201 G4double Da = (U - TotalEnergy)/U; 216 G4double Da = (U - TotalEnergy)/U;
202 G4double Db = 0.0; 217 G4double Db = 0.0;
203 218
204 // bracketing the solution 219 // bracketing the solution
205 if (Da == 0.0) { 220 if (Da == 0.0) {
206 Temperature = T; 221 Temperature = T;
207 return true; 222 return true;
208 } else if (Da < 0.0) { 223 } else if (Da < 0.0) {
209 do { 224 do {
210 T *= 0.5; << 225 Tb -= 0.5 * std::fabs(Tb);
211 if (T < 0.001*MeV) return false; << 226 T = Tb;
>> 227 if (Tb < 0.001*MeV) return false;
212 228
213 TotalEnergy = CalcEnergy(A,Z,aChannel,T) 229 TotalEnergy = CalcEnergy(A,Z,aChannel,T);
214 230
215 Db = (U - TotalEnergy)/U; 231 Db = (U - TotalEnergy)/U;
216 // Loop checking, 05-Aug-2015, Vladimir <<
217 } while (Db < 0.0); 232 } while (Db < 0.0);
218 233
219 } else { 234 } else {
220 do { 235 do {
221 T *= 1.5; << 236 Tb += 0.5 * std::fabs(Tb);
>> 237 T = Tb;
222 238
223 TotalEnergy = CalcEnergy(A,Z,aChannel,T) 239 TotalEnergy = CalcEnergy(A,Z,aChannel,T);
224 240
225 Db = (U - TotalEnergy)/U; 241 Db = (U - TotalEnergy)/U;
226 // Loop checking, 05-Aug-2015, Vladimir <<
227 } while (Db > 0.0); 242 } while (Db > 0.0);
228 } 243 }
229 244
230 G4double eps = 1.0e-14 * std::abs(T-Ta); << 245 G4double eps = 1.0e-14 * std::abs(Tb-Ta);
231 //G4double eps = 1.0e-3 ; 246 //G4double eps = 1.0e-3 ;
232 247
233 // Start the bisection method 248 // Start the bisection method
234 for (G4int j = 0; j < 1000; j++) { 249 for (G4int j = 0; j < 1000; j++) {
235 G4double Tc = (Ta+T)*0.5; << 250 G4double Tc = (Ta+Tb)/2.0;
236 if (std::abs(Ta-Tc) <= eps) { 251 if (std::abs(Ta-Tc) <= eps) {
237 Temperature = Tc; 252 Temperature = Tc;
238 return true; 253 return true;
239 } 254 }
240 255
241 T = Tc; << 256 T = Tc;
>> 257
242 TotalEnergy = CalcEnergy(A,Z,aChannel,T); 258 TotalEnergy = CalcEnergy(A,Z,aChannel,T);
>> 259
243 G4double Dc = (U - TotalEnergy)/U; 260 G4double Dc = (U - TotalEnergy)/U;
244 261
245 if (Dc == 0.0) { 262 if (Dc == 0.0) {
246 Temperature = Tc; 263 Temperature = Tc;
247 return true; 264 return true;
248 } 265 }
>> 266
249 if (Da*Dc < 0.0) { 267 if (Da*Dc < 0.0) {
250 T = Tc; << 268 Tb = Tc;
251 Db = Dc; 269 Db = Dc;
252 } else { 270 } else {
253 Ta = Tc; 271 Ta = Tc;
254 Da = Dc; 272 Da = Dc;
255 } 273 }
256 } 274 }
257 275
258 Temperature = (Ta+T)*0.5; << 276 Temperature = (Ta+Tb)/2.0;
259 return false; 277 return false;
260 } 278 }
261 279
262 G4double G4StatMF::CalcEnergy(G4int A, G4int Z 280 G4double G4StatMF::CalcEnergy(G4int A, G4int Z, const G4StatMFChannel * aChannel,
263 G4double T) 281 G4double T)
264 { 282 {
265 G4double MassExcess0 = G4NucleiProperties::G << 283 G4double MassExcess0 = G4NucleiProperties::GetMassExcess(A,Z);
266 G4double ChannelEnergy = aChannel->GetFragme << 284
267 return -MassExcess0 + G4StatMFParameters::Ge << 285 G4double Coulomb = (3./5.)*(elm_coupling*Z*Z)
>> 286 *std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.)/
>> 287 (G4StatMFParameters::Getr0()*G4Pow::GetInstance()->Z13(A));
>> 288
>> 289 G4double ChannelEnergy = aChannel->GetFragmentsEnergy(T);
>> 290
>> 291 return -MassExcess0 + Coulomb + ChannelEnergy;
>> 292
268 } 293 }
269 294
270 295
271 296
272 297