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26 // 26 //
>> 27 // $Id: G4StatMF.cc,v 1.5 2006/06/29 20:24:43 gunter Exp $
>> 28 // GEANT4 tag $Name: geant4-08-02 $
27 // 29 //
28 // Hadronic Process: Nuclear De-excitations 30 // Hadronic Process: Nuclear De-excitations
29 // by V. Lara 31 // by V. Lara
30 32
31 #include "G4StatMF.hh" 33 #include "G4StatMF.hh"
32 #include "G4PhysicalConstants.hh" <<
33 #include "G4SystemOfUnits.hh" <<
34 #include "G4Pow.hh" <<
35 #include "G4PhysicsModelCatalog.hh" <<
36 34
37 G4StatMF::G4StatMF() << 35
>> 36
>> 37 // Default constructor
>> 38 G4StatMF::G4StatMF() : _theEnsemble(0) {}
>> 39
>> 40
>> 41 // Destructor
>> 42 G4StatMF::~G4StatMF() {} //{if (_theEnsemble != 0) delete _theEnsemble;}
>> 43
>> 44
>> 45 // Copy constructor
>> 46 G4StatMF::G4StatMF(const G4StatMF & ) : G4VMultiFragmentation()
38 { 47 {
39 _secID = G4PhysicsModelCatalog::GetModelID(" << 48 throw G4HadronicException(__FILE__, __LINE__, "G4StatMF::copy_constructor meant to not be accessable");
40 } 49 }
41 50
42 G4StatMF::~G4StatMF() {} <<
43 51
44 G4FragmentVector* G4StatMF::BreakItUp(const G4 << 52 // Operators
>> 53
>> 54 G4StatMF & G4StatMF::operator=(const G4StatMF & )
>> 55 {
>> 56 throw G4HadronicException(__FILE__, __LINE__, "G4StatMF::operator= meant to not be accessable");
>> 57 return *this;
>> 58 }
>> 59
>> 60
>> 61 G4bool G4StatMF::operator==(const G4StatMF & )
>> 62 {
>> 63 throw G4HadronicException(__FILE__, __LINE__, "G4StatMF::operator== meant to not be accessable");
>> 64 return false;
>> 65 }
>> 66
>> 67
>> 68 G4bool G4StatMF::operator!=(const G4StatMF & )
45 { 69 {
>> 70 throw G4HadronicException(__FILE__, __LINE__, "G4StatMF::operator!= meant to not be accessable");
>> 71 return true;
>> 72 }
>> 73
>> 74
>> 75
>> 76
>> 77
>> 78 G4FragmentVector * G4StatMF::BreakItUp(const G4Fragment &theFragment)
>> 79 {
>> 80 // G4FragmentVector * theResult = new G4FragmentVector;
>> 81
46 if (theFragment.GetExcitationEnergy() <= 0.0 82 if (theFragment.GetExcitationEnergy() <= 0.0) {
47 return nullptr; << 83 G4FragmentVector * theResult = new G4FragmentVector;
>> 84 theResult->push_back(new G4Fragment(theFragment));
>> 85 return 0;
48 } 86 }
49 87
>> 88
50 // Maximun average multiplicity: M_0 = 2.6 f 89 // Maximun average multiplicity: M_0 = 2.6 for A ~ 200
51 // and M_0 = 3.3 for A <= 110 90 // and M_0 = 3.3 for A <= 110
52 G4double MaxAverageMultiplicity = 91 G4double MaxAverageMultiplicity =
53 G4StatMFParameters::GetMaxAverageMultiplic << 92 G4StatMFParameters::GetMaxAverageMultiplicity(static_cast<G4int>(theFragment.GetA()));
54 93
55 94
56 // We'll use two kinds of ensembles 95 // We'll use two kinds of ensembles
57 G4StatMFMicroCanonical * theMicrocanonicalEn 96 G4StatMFMicroCanonical * theMicrocanonicalEnsemble = 0;
58 G4StatMFMacroCanonical * theMacrocanonicalEn 97 G4StatMFMacroCanonical * theMacrocanonicalEnsemble = 0;
>> 98
59 99
60 //------------------------------------------ << 100 //-------------------------------------------------------
61 // Direct simulation part (Microcanonical en << 101 // Direct simulation part (Microcanonical ensemble)
62 //------------------------------------------ << 102 //-------------------------------------------------------
63 103
64 // Microcanonical ensemble initialization << 104 // Microcanonical ensemble initialization
65 theMicrocanonicalEnsemble = new G4StatMFMicr 105 theMicrocanonicalEnsemble = new G4StatMFMicroCanonical(theFragment);
66 106
67 G4int Iterations = 0; 107 G4int Iterations = 0;
68 G4int IterationsLimit = 100000; <<
69 G4double Temperature = 0.0; 108 G4double Temperature = 0.0;
70 109
71 G4bool FirstTime = true; 110 G4bool FirstTime = true;
72 G4StatMFChannel * theChannel = 0; 111 G4StatMFChannel * theChannel = 0;
73 << 112
74 G4bool ChannelOk; 113 G4bool ChannelOk;
75 do { // Try to de-excite as much as Iterati << 114 do { // Try to de-excite as much as 10 times
76 do { 115 do {
77 116
78 G4double theMeanMult = theMicrocanonical 117 G4double theMeanMult = theMicrocanonicalEnsemble->GetMeanMultiplicity();
79 if (theMeanMult <= MaxAverageMultiplicit 118 if (theMeanMult <= MaxAverageMultiplicity) {
80 // G4cout << "MICROCANONICAL" << G4endl; 119 // G4cout << "MICROCANONICAL" << G4endl;
81 // Choose fragments atomic numbers and charg 120 // Choose fragments atomic numbers and charges from direct simulation
82 theChannel = theMicrocanonicalEnsemble->Choo 121 theChannel = theMicrocanonicalEnsemble->ChooseAandZ(theFragment);
83 _theEnsemble = theMicrocanonicalEnsemble; 122 _theEnsemble = theMicrocanonicalEnsemble;
84 } else { 123 } else {
85 //------------------------------------------ 124 //-----------------------------------------------------
86 // Non direct simulation part (Macrocanonica 125 // Non direct simulation part (Macrocanonical Ensemble)
87 //------------------------------------------ 126 //-----------------------------------------------------
88 if (FirstTime) { 127 if (FirstTime) {
89 // Macrocanonical ensemble initialization 128 // Macrocanonical ensemble initialization
90 theMacrocanonicalEnsemble = new G4StatMFMa 129 theMacrocanonicalEnsemble = new G4StatMFMacroCanonical(theFragment);
91 _theEnsemble = theMacrocanonicalEnsemble; 130 _theEnsemble = theMacrocanonicalEnsemble;
92 FirstTime = false; 131 FirstTime = false;
93 } 132 }
94 // G4cout << "MACROCANONICAL" << G4endl; 133 // G4cout << "MACROCANONICAL" << G4endl;
95 // Select calculated fragment total multipli 134 // Select calculated fragment total multiplicity,
96 // fragment atomic numbers and fragment char 135 // fragment atomic numbers and fragment charges.
97 theChannel = theMacrocanonicalEnsemble->Choo 136 theChannel = theMacrocanonicalEnsemble->ChooseAandZ(theFragment);
98 } 137 }
99 138
100 ChannelOk = theChannel->CheckFragments() << 139 if (!(ChannelOk = theChannel->CheckFragments())) delete theChannel;
101 if (!ChannelOk) delete theChannel; <<
102 140
103 // Loop checking, 05-Aug-2015, Vladimir <<
104 } while (!ChannelOk); 141 } while (!ChannelOk);
105 142
106 143
107 if (theChannel->GetMultiplicity() <= 1) { 144 if (theChannel->GetMultiplicity() <= 1) {
108 G4FragmentVector * theResult = new G4Fra 145 G4FragmentVector * theResult = new G4FragmentVector;
109 theResult->push_back(new G4Fragment(theF 146 theResult->push_back(new G4Fragment(theFragment));
110 delete theMicrocanonicalEnsemble; 147 delete theMicrocanonicalEnsemble;
111 if (theMacrocanonicalEnsemble != 0) dele 148 if (theMacrocanonicalEnsemble != 0) delete theMacrocanonicalEnsemble;
112 delete theChannel; 149 delete theChannel;
113 return theResult; 150 return theResult;
114 } 151 }
115 152
116 //-------------------------------------- 153 //--------------------------------------
117 // Second part of simulation procedure. 154 // Second part of simulation procedure.
118 //-------------------------------------- 155 //--------------------------------------
119 156
120 // Find temperature of breaking channel. 157 // Find temperature of breaking channel.
121 Temperature = _theEnsemble->GetMeanTempera << 158 Temperature = _theEnsemble->GetMeanTemperature(); // Initial value for Temperature
122 << 159
123 if (FindTemperatureOfBreakingChannel(theFr 160 if (FindTemperatureOfBreakingChannel(theFragment,theChannel,Temperature)) break;
124 << 161
125 // Do not forget to delete this unusable c << 162 } while (Iterations++ < 10);
126 // otherwise for very proton-reach nuclei << 163
127 // number of iterations. N.B. "theChannel" << 164
128 << 165 // If Iterations >= 10 means that we couldn't solve for temperature
129 // G4cout << " Iteration # " << Iterations << 166 if (Iterations >= 10)
130 <<
131 delete theChannel; <<
132 <<
133 // Loop checking, 05-Aug-2015, Vladimir Iv <<
134 } while (Iterations++ < IterationsLimit ); <<
135 <<
136 // If Iterations >= IterationsLimit means th <<
137 if (Iterations >= IterationsLimit) <<
138 throw G4HadronicException(__FILE__, __LINE 167 throw G4HadronicException(__FILE__, __LINE__, "G4StatMF::BreakItUp: Was not possible to solve for temperature of breaking channel");
139 << 168
>> 169
140 G4FragmentVector * theResult = theChannel-> 170 G4FragmentVector * theResult = theChannel->
141 GetFragments(theFragment.GetA_asInt(),theF << 171 GetFragments(theFragment.GetA(),theFragment.GetZ(),Temperature);
142 << 172
>> 173
>> 174
143 // ~~~~~~ Energy conservation Patch !!!!!!!! 175 // ~~~~~~ Energy conservation Patch !!!!!!!!!!!!!!!!!!!!!!
144 // Original nucleus 4-momentum in CM system 176 // Original nucleus 4-momentum in CM system
145 G4LorentzVector InitialMomentum(theFragment. 177 G4LorentzVector InitialMomentum(theFragment.GetMomentum());
146 InitialMomentum.boost(-InitialMomentum.boost 178 InitialMomentum.boost(-InitialMomentum.boostVector());
147 G4double ScaleFactor = 0.0; 179 G4double ScaleFactor = 0.0;
148 G4double SavedScaleFactor = 0.0; 180 G4double SavedScaleFactor = 0.0;
149 do { 181 do {
150 G4double FragmentsEnergy = 0.0; 182 G4double FragmentsEnergy = 0.0;
151 for (auto const & ptr : *theResult) { << 183 G4FragmentVector::iterator j;
152 FragmentsEnergy += ptr->GetMomentum().e( << 184 for (j = theResult->begin(); j != theResult->end(); j++)
153 } << 185 FragmentsEnergy += (*j)->GetMomentum().e();
154 if (0.0 == FragmentsEnergy) { break; } <<
155 SavedScaleFactor = ScaleFactor; 186 SavedScaleFactor = ScaleFactor;
156 ScaleFactor = InitialMomentum.e()/Fragment 187 ScaleFactor = InitialMomentum.e()/FragmentsEnergy;
157 G4ThreeVector ScaledMomentum(0.0,0.0,0.0); 188 G4ThreeVector ScaledMomentum(0.0,0.0,0.0);
158 for (auto const & ptr : *theResult) { << 189 for (j = theResult->begin(); j != theResult->end(); j++) {
159 ScaledMomentum = ScaleFactor * ptr->GetM << 190 ScaledMomentum = ScaleFactor * (*j)->GetMomentum().vect();
160 G4double Mass = ptr->GetMomentum().mag() << 191 G4double Mass = (*j)->GetMomentum().m();
161 G4LorentzVector NewMomentum; 192 G4LorentzVector NewMomentum;
162 NewMomentum.setVect(ScaledMomentum); 193 NewMomentum.setVect(ScaledMomentum);
163 NewMomentum.setE(std::sqrt(ScaledMomentu 194 NewMomentum.setE(std::sqrt(ScaledMomentum.mag2()+Mass*Mass));
164 ptr->SetMomentum(NewMomentum); << 195 (*j)->SetMomentum(NewMomentum);
165 } 196 }
166 // Loop checking, 05-Aug-2015, Vladimir Iv <<
167 } while (ScaleFactor > 1.0+1.e-5 && std::abs 197 } while (ScaleFactor > 1.0+1.e-5 && std::abs(ScaleFactor-SavedScaleFactor)/ScaleFactor > 1.e-10);
168 // ~~~~~~ End of patch !!!!!!!!!!!!!!!!!!!!! 198 // ~~~~~~ End of patch !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
169 199
170 // Perform Lorentz boost 200 // Perform Lorentz boost
171 G4FragmentVector::iterator i; 201 G4FragmentVector::iterator i;
172 for (i = theResult->begin(); i != theResult- 202 for (i = theResult->begin(); i != theResult->end(); i++) {
173 G4LorentzVector FourMom = (*i)->GetMomentu 203 G4LorentzVector FourMom = (*i)->GetMomentum();
174 FourMom.boost(theFragment.GetMomentum().bo 204 FourMom.boost(theFragment.GetMomentum().boostVector());
175 (*i)->SetMomentum(FourMom); 205 (*i)->SetMomentum(FourMom);
176 (*i)->SetCreatorModelID(_secID); << 206 #ifdef PRECOMPOUND_TEST
>> 207 (*i)->SetCreatorModel(G4String("G4StatMF"));
>> 208 #endif
177 } 209 }
178 210
179 // garbage collection 211 // garbage collection
180 delete theMicrocanonicalEnsemble; 212 delete theMicrocanonicalEnsemble;
181 if (theMacrocanonicalEnsemble != 0) delete t 213 if (theMacrocanonicalEnsemble != 0) delete theMacrocanonicalEnsemble;
182 delete theChannel; 214 delete theChannel;
183 215
184 return theResult; 216 return theResult;
185 } 217 }
186 218
187 219
188 G4bool G4StatMF::FindTemperatureOfBreakingChan 220 G4bool G4StatMF::FindTemperatureOfBreakingChannel(const G4Fragment & theFragment,
189 const G4StatMFChannel * aChannel 221 const G4StatMFChannel * aChannel,
190 G4double & Temperature) 222 G4double & Temperature)
191 // This finds temperature of breaking channe 223 // This finds temperature of breaking channel.
192 { 224 {
193 G4int A = theFragment.GetA_asInt(); << 225 G4double A = theFragment.GetA();
194 G4int Z = theFragment.GetZ_asInt(); << 226 G4double Z = theFragment.GetZ();
195 G4double U = theFragment.GetExcitationEnergy 227 G4double U = theFragment.GetExcitationEnergy();
196 228
197 G4double T = std::max(Temperature,0.0012*MeV << 229 G4double T = std::max(Temperature,0.0012*MeV);
>> 230
198 G4double Ta = T; 231 G4double Ta = T;
>> 232 G4double Tb = T;
>> 233
>> 234
199 G4double TotalEnergy = CalcEnergy(A,Z,aChann 235 G4double TotalEnergy = CalcEnergy(A,Z,aChannel,T);
200 236
201 G4double Da = (U - TotalEnergy)/U; 237 G4double Da = (U - TotalEnergy)/U;
202 G4double Db = 0.0; 238 G4double Db = 0.0;
203 239
204 // bracketing the solution 240 // bracketing the solution
205 if (Da == 0.0) { 241 if (Da == 0.0) {
206 Temperature = T; 242 Temperature = T;
207 return true; 243 return true;
208 } else if (Da < 0.0) { 244 } else if (Da < 0.0) {
209 do { 245 do {
210 T *= 0.5; << 246 Tb -= 0.5 * std::abs(Tb);
211 if (T < 0.001*MeV) return false; << 247 T = Tb;
>> 248 if (Tb < 0.001*MeV) return false;
212 249
213 TotalEnergy = CalcEnergy(A,Z,aChannel,T) 250 TotalEnergy = CalcEnergy(A,Z,aChannel,T);
214 251
215 Db = (U - TotalEnergy)/U; 252 Db = (U - TotalEnergy)/U;
216 // Loop checking, 05-Aug-2015, Vladimir <<
217 } while (Db < 0.0); 253 } while (Db < 0.0);
218 254
219 } else { 255 } else {
220 do { 256 do {
221 T *= 1.5; << 257 Tb += 0.5 * std::abs(Tb);
>> 258 T = Tb;
222 259
223 TotalEnergy = CalcEnergy(A,Z,aChannel,T) 260 TotalEnergy = CalcEnergy(A,Z,aChannel,T);
224 261
225 Db = (U - TotalEnergy)/U; 262 Db = (U - TotalEnergy)/U;
226 // Loop checking, 05-Aug-2015, Vladimir <<
227 } while (Db > 0.0); 263 } while (Db > 0.0);
228 } 264 }
229 265
230 G4double eps = 1.0e-14 * std::abs(T-Ta); << 266 G4double eps = 1.0e-14 * std::abs(Tb-Ta);
231 //G4double eps = 1.0e-3 ; 267 //G4double eps = 1.0e-3 ;
232 268
233 // Start the bisection method 269 // Start the bisection method
234 for (G4int j = 0; j < 1000; j++) { 270 for (G4int j = 0; j < 1000; j++) {
235 G4double Tc = (Ta+T)*0.5; << 271 G4double Tc = (Ta+Tb)/2.0;
236 if (std::abs(Ta-Tc) <= eps) { 272 if (std::abs(Ta-Tc) <= eps) {
237 Temperature = Tc; 273 Temperature = Tc;
238 return true; 274 return true;
239 } 275 }
240 276
241 T = Tc; << 277 T = Tc;
>> 278
242 TotalEnergy = CalcEnergy(A,Z,aChannel,T); 279 TotalEnergy = CalcEnergy(A,Z,aChannel,T);
>> 280
243 G4double Dc = (U - TotalEnergy)/U; 281 G4double Dc = (U - TotalEnergy)/U;
244 282
245 if (Dc == 0.0) { 283 if (Dc == 0.0) {
246 Temperature = Tc; 284 Temperature = Tc;
247 return true; 285 return true;
248 } 286 }
>> 287
249 if (Da*Dc < 0.0) { 288 if (Da*Dc < 0.0) {
250 T = Tc; << 289 Tb = Tc;
251 Db = Dc; 290 Db = Dc;
252 } else { 291 } else {
253 Ta = Tc; 292 Ta = Tc;
254 Da = Dc; 293 Da = Dc;
255 } 294 }
256 } 295 }
257 296
258 Temperature = (Ta+T)*0.5; << 297 Temperature = (Ta+Tb)/2.0;
259 return false; 298 return false;
260 } 299 }
261 300
262 G4double G4StatMF::CalcEnergy(G4int A, G4int Z << 301
263 G4double T) << 302
>> 303 G4double G4StatMF::CalcEnergy(const G4double A, const G4double Z, const G4StatMFChannel * aChannel,
>> 304 const G4double T)
264 { 305 {
265 G4double MassExcess0 = G4NucleiProperties::G << 306 G4double MassExcess0 = G4NucleiProperties::GetMassExcess(static_cast<G4int>(A),static_cast<G4int>(Z));
266 G4double ChannelEnergy = aChannel->GetFragme << 307
267 return -MassExcess0 + G4StatMFParameters::Ge << 308 G4double Coulomb = (3./5.)*(elm_coupling*Z*Z)*std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.)/
>> 309 (G4StatMFParameters::Getr0()*std::pow(A,1./3.));
>> 310
>> 311 G4double ChannelEnergy = aChannel->GetFragmentsEnergy(T);
>> 312
>> 313 return -MassExcess0 + Coulomb + ChannelEnergy;
>> 314
268 } 315 }
269 316
270 317
271 318
272 319