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25 // 22 //
26 // 23 //
>> 24 // $Id: G4StatMF.cc,v 1.2 2003/11/03 17:53:05 hpw Exp $
>> 25 // GEANT4 tag $Name: geant4-06-00-patch-01 $
27 // 26 //
28 // Hadronic Process: Nuclear De-excitations 27 // Hadronic Process: Nuclear De-excitations
29 // by V. Lara 28 // by V. Lara
30 29
31 #include "G4StatMF.hh" 30 #include "G4StatMF.hh"
32 #include "G4PhysicalConstants.hh" <<
33 #include "G4SystemOfUnits.hh" <<
34 #include "G4Pow.hh" <<
35 #include "G4PhysicsModelCatalog.hh" <<
36 31
37 G4StatMF::G4StatMF() << 32
>> 33
>> 34 // Default constructor
>> 35 G4StatMF::G4StatMF() : _theEnsemble(0) {}
>> 36
>> 37
>> 38 // Destructor
>> 39 G4StatMF::~G4StatMF() {} //{if (_theEnsemble != 0) delete _theEnsemble;}
>> 40
>> 41
>> 42 // Copy constructor
>> 43 G4StatMF::G4StatMF(const G4StatMF & ) : G4VMultiFragmentation()
38 { 44 {
39 _secID = G4PhysicsModelCatalog::GetModelID(" << 45 throw G4HadronicException(__FILE__, __LINE__, "G4StatMF::copy_constructor meant to not be accessable");
40 } 46 }
41 47
42 G4StatMF::~G4StatMF() {} <<
43 48
44 G4FragmentVector* G4StatMF::BreakItUp(const G4 << 49 // Operators
>> 50
>> 51 G4StatMF & G4StatMF::operator=(const G4StatMF & )
>> 52 {
>> 53 throw G4HadronicException(__FILE__, __LINE__, "G4StatMF::operator= meant to not be accessable");
>> 54 return *this;
>> 55 }
>> 56
>> 57
>> 58 G4bool G4StatMF::operator==(const G4StatMF & )
>> 59 {
>> 60 throw G4HadronicException(__FILE__, __LINE__, "G4StatMF::operator== meant to not be accessable");
>> 61 return false;
>> 62 }
>> 63
>> 64
>> 65 G4bool G4StatMF::operator!=(const G4StatMF & )
45 { 66 {
>> 67 throw G4HadronicException(__FILE__, __LINE__, "G4StatMF::operator!= meant to not be accessable");
>> 68 return true;
>> 69 }
>> 70
>> 71
>> 72
>> 73
>> 74
>> 75 G4FragmentVector * G4StatMF::BreakItUp(const G4Fragment &theFragment)
>> 76 {
>> 77 // G4FragmentVector * theResult = new G4FragmentVector;
>> 78
46 if (theFragment.GetExcitationEnergy() <= 0.0 79 if (theFragment.GetExcitationEnergy() <= 0.0) {
47 return nullptr; << 80 G4FragmentVector * theResult = new G4FragmentVector;
>> 81 theResult->push_back(new G4Fragment(theFragment));
>> 82 return 0;
48 } 83 }
49 84
>> 85
50 // Maximun average multiplicity: M_0 = 2.6 f 86 // Maximun average multiplicity: M_0 = 2.6 for A ~ 200
51 // and M_0 = 3.3 for A <= 110 87 // and M_0 = 3.3 for A <= 110
52 G4double MaxAverageMultiplicity = 88 G4double MaxAverageMultiplicity =
53 G4StatMFParameters::GetMaxAverageMultiplic << 89 G4StatMFParameters::GetMaxAverageMultiplicity(static_cast<G4int>(theFragment.GetA()));
54 90
55 91
56 // We'll use two kinds of ensembles 92 // We'll use two kinds of ensembles
57 G4StatMFMicroCanonical * theMicrocanonicalEn 93 G4StatMFMicroCanonical * theMicrocanonicalEnsemble = 0;
58 G4StatMFMacroCanonical * theMacrocanonicalEn 94 G4StatMFMacroCanonical * theMacrocanonicalEnsemble = 0;
>> 95
59 96
60 //------------------------------------------ << 97 //-------------------------------------------------------
61 // Direct simulation part (Microcanonical en << 98 // Direct simulation part (Microcanonical ensemble)
62 //------------------------------------------ << 99 //-------------------------------------------------------
63 100
64 // Microcanonical ensemble initialization << 101 // Microcanonical ensemble initialization
65 theMicrocanonicalEnsemble = new G4StatMFMicr 102 theMicrocanonicalEnsemble = new G4StatMFMicroCanonical(theFragment);
66 103
67 G4int Iterations = 0; 104 G4int Iterations = 0;
68 G4int IterationsLimit = 100000; <<
69 G4double Temperature = 0.0; 105 G4double Temperature = 0.0;
70 106
71 G4bool FirstTime = true; 107 G4bool FirstTime = true;
72 G4StatMFChannel * theChannel = 0; 108 G4StatMFChannel * theChannel = 0;
73 << 109
74 G4bool ChannelOk; 110 G4bool ChannelOk;
75 do { // Try to de-excite as much as Iterati << 111 do { // Try to de-excite as much as 10 times
76 do { 112 do {
77 113
78 G4double theMeanMult = theMicrocanonical 114 G4double theMeanMult = theMicrocanonicalEnsemble->GetMeanMultiplicity();
79 if (theMeanMult <= MaxAverageMultiplicit 115 if (theMeanMult <= MaxAverageMultiplicity) {
80 // G4cout << "MICROCANONICAL" << G4endl; 116 // G4cout << "MICROCANONICAL" << G4endl;
81 // Choose fragments atomic numbers and charg 117 // Choose fragments atomic numbers and charges from direct simulation
82 theChannel = theMicrocanonicalEnsemble->Choo 118 theChannel = theMicrocanonicalEnsemble->ChooseAandZ(theFragment);
83 _theEnsemble = theMicrocanonicalEnsemble; 119 _theEnsemble = theMicrocanonicalEnsemble;
84 } else { 120 } else {
85 //------------------------------------------ 121 //-----------------------------------------------------
86 // Non direct simulation part (Macrocanonica 122 // Non direct simulation part (Macrocanonical Ensemble)
87 //------------------------------------------ 123 //-----------------------------------------------------
88 if (FirstTime) { 124 if (FirstTime) {
89 // Macrocanonical ensemble initialization 125 // Macrocanonical ensemble initialization
90 theMacrocanonicalEnsemble = new G4StatMFMa 126 theMacrocanonicalEnsemble = new G4StatMFMacroCanonical(theFragment);
91 _theEnsemble = theMacrocanonicalEnsemble; 127 _theEnsemble = theMacrocanonicalEnsemble;
92 FirstTime = false; 128 FirstTime = false;
93 } 129 }
94 // G4cout << "MACROCANONICAL" << G4endl; 130 // G4cout << "MACROCANONICAL" << G4endl;
95 // Select calculated fragment total multipli 131 // Select calculated fragment total multiplicity,
96 // fragment atomic numbers and fragment char 132 // fragment atomic numbers and fragment charges.
97 theChannel = theMacrocanonicalEnsemble->Choo 133 theChannel = theMacrocanonicalEnsemble->ChooseAandZ(theFragment);
98 } 134 }
99 135
100 ChannelOk = theChannel->CheckFragments() << 136 if (!(ChannelOk = theChannel->CheckFragments())) delete theChannel;
101 if (!ChannelOk) delete theChannel; <<
102 137
103 // Loop checking, 05-Aug-2015, Vladimir <<
104 } while (!ChannelOk); 138 } while (!ChannelOk);
105 139
106 140
107 if (theChannel->GetMultiplicity() <= 1) { 141 if (theChannel->GetMultiplicity() <= 1) {
108 G4FragmentVector * theResult = new G4Fra 142 G4FragmentVector * theResult = new G4FragmentVector;
109 theResult->push_back(new G4Fragment(theF 143 theResult->push_back(new G4Fragment(theFragment));
110 delete theMicrocanonicalEnsemble; 144 delete theMicrocanonicalEnsemble;
111 if (theMacrocanonicalEnsemble != 0) dele 145 if (theMacrocanonicalEnsemble != 0) delete theMacrocanonicalEnsemble;
112 delete theChannel; 146 delete theChannel;
113 return theResult; 147 return theResult;
114 } 148 }
115 149
116 //-------------------------------------- 150 //--------------------------------------
117 // Second part of simulation procedure. 151 // Second part of simulation procedure.
118 //-------------------------------------- 152 //--------------------------------------
119 153
120 // Find temperature of breaking channel. 154 // Find temperature of breaking channel.
121 Temperature = _theEnsemble->GetMeanTempera << 155 Temperature = _theEnsemble->GetMeanTemperature(); // Initial value for Temperature
122 << 156
123 if (FindTemperatureOfBreakingChannel(theFr 157 if (FindTemperatureOfBreakingChannel(theFragment,theChannel,Temperature)) break;
124 << 158
125 // Do not forget to delete this unusable c << 159 } while (Iterations++ < 10);
126 // otherwise for very proton-reach nuclei << 160
127 // number of iterations. N.B. "theChannel" << 161
128 << 162 // If Iterations >= 10 means that we couldn't solve for temperature
129 // G4cout << " Iteration # " << Iterations << 163 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 164 throw G4HadronicException(__FILE__, __LINE__, "G4StatMF::BreakItUp: Was not possible to solve for temperature of breaking channel");
139 << 165
>> 166
140 G4FragmentVector * theResult = theChannel-> 167 G4FragmentVector * theResult = theChannel->
141 GetFragments(theFragment.GetA_asInt(),theF << 168 GetFragments(theFragment.GetA(),theFragment.GetZ(),Temperature);
142 << 169
>> 170
>> 171
143 // ~~~~~~ Energy conservation Patch !!!!!!!! 172 // ~~~~~~ Energy conservation Patch !!!!!!!!!!!!!!!!!!!!!!
144 // Original nucleus 4-momentum in CM system 173 // Original nucleus 4-momentum in CM system
145 G4LorentzVector InitialMomentum(theFragment. 174 G4LorentzVector InitialMomentum(theFragment.GetMomentum());
146 InitialMomentum.boost(-InitialMomentum.boost 175 InitialMomentum.boost(-InitialMomentum.boostVector());
147 G4double ScaleFactor = 0.0; 176 G4double ScaleFactor = 0.0;
148 G4double SavedScaleFactor = 0.0; 177 G4double SavedScaleFactor = 0.0;
149 do { 178 do {
150 G4double FragmentsEnergy = 0.0; 179 G4double FragmentsEnergy = 0.0;
151 for (auto const & ptr : *theResult) { << 180 G4FragmentVector::iterator j;
152 FragmentsEnergy += ptr->GetMomentum().e( << 181 for (j = theResult->begin(); j != theResult->end(); j++)
153 } << 182 FragmentsEnergy += (*j)->GetMomentum().e();
154 if (0.0 == FragmentsEnergy) { break; } <<
155 SavedScaleFactor = ScaleFactor; 183 SavedScaleFactor = ScaleFactor;
156 ScaleFactor = InitialMomentum.e()/Fragment 184 ScaleFactor = InitialMomentum.e()/FragmentsEnergy;
157 G4ThreeVector ScaledMomentum(0.0,0.0,0.0); 185 G4ThreeVector ScaledMomentum(0.0,0.0,0.0);
158 for (auto const & ptr : *theResult) { << 186 for (j = theResult->begin(); j != theResult->end(); j++) {
159 ScaledMomentum = ScaleFactor * ptr->GetM << 187 ScaledMomentum = ScaleFactor * (*j)->GetMomentum().vect();
160 G4double Mass = ptr->GetMomentum().mag() << 188 G4double Mass = (*j)->GetMomentum().m();
161 G4LorentzVector NewMomentum; 189 G4LorentzVector NewMomentum;
162 NewMomentum.setVect(ScaledMomentum); 190 NewMomentum.setVect(ScaledMomentum);
163 NewMomentum.setE(std::sqrt(ScaledMomentu << 191 NewMomentum.setE(sqrt(ScaledMomentum.mag2()+Mass*Mass));
164 ptr->SetMomentum(NewMomentum); << 192 (*j)->SetMomentum(NewMomentum);
165 } 193 }
166 // Loop checking, 05-Aug-2015, Vladimir Iv << 194 } while (ScaleFactor > 1.0+1.e-5 && abs(ScaleFactor-SavedScaleFactor)/ScaleFactor > 1.e-10);
167 } while (ScaleFactor > 1.0+1.e-5 && std::abs <<
168 // ~~~~~~ End of patch !!!!!!!!!!!!!!!!!!!!! 195 // ~~~~~~ End of patch !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
169 196
170 // Perform Lorentz boost 197 // Perform Lorentz boost
171 G4FragmentVector::iterator i; 198 G4FragmentVector::iterator i;
172 for (i = theResult->begin(); i != theResult- 199 for (i = theResult->begin(); i != theResult->end(); i++) {
173 G4LorentzVector FourMom = (*i)->GetMomentu 200 G4LorentzVector FourMom = (*i)->GetMomentum();
174 FourMom.boost(theFragment.GetMomentum().bo 201 FourMom.boost(theFragment.GetMomentum().boostVector());
175 (*i)->SetMomentum(FourMom); 202 (*i)->SetMomentum(FourMom);
176 (*i)->SetCreatorModelID(_secID); << 203 #ifdef PRECOMPOUND_TEST
>> 204 (*i)->SetCreatorModel(G4String("G4StatMF"));
>> 205 #endif
177 } 206 }
178 207
179 // garbage collection 208 // garbage collection
180 delete theMicrocanonicalEnsemble; 209 delete theMicrocanonicalEnsemble;
181 if (theMacrocanonicalEnsemble != 0) delete t 210 if (theMacrocanonicalEnsemble != 0) delete theMacrocanonicalEnsemble;
182 delete theChannel; 211 delete theChannel;
183 212
184 return theResult; 213 return theResult;
185 } 214 }
186 215
187 216
188 G4bool G4StatMF::FindTemperatureOfBreakingChan 217 G4bool G4StatMF::FindTemperatureOfBreakingChannel(const G4Fragment & theFragment,
189 const G4StatMFChannel * aChannel 218 const G4StatMFChannel * aChannel,
190 G4double & Temperature) 219 G4double & Temperature)
191 // This finds temperature of breaking channe 220 // This finds temperature of breaking channel.
192 { 221 {
193 G4int A = theFragment.GetA_asInt(); << 222 G4double A = theFragment.GetA();
194 G4int Z = theFragment.GetZ_asInt(); << 223 G4double Z = theFragment.GetZ();
195 G4double U = theFragment.GetExcitationEnergy 224 G4double U = theFragment.GetExcitationEnergy();
196 225
197 G4double T = std::max(Temperature,0.0012*MeV << 226 G4double T = std::max(Temperature,0.0012*MeV);
>> 227
198 G4double Ta = T; 228 G4double Ta = T;
>> 229 G4double Tb = T;
>> 230
>> 231
199 G4double TotalEnergy = CalcEnergy(A,Z,aChann 232 G4double TotalEnergy = CalcEnergy(A,Z,aChannel,T);
200 233
201 G4double Da = (U - TotalEnergy)/U; 234 G4double Da = (U - TotalEnergy)/U;
202 G4double Db = 0.0; 235 G4double Db = 0.0;
203 236
204 // bracketing the solution 237 // bracketing the solution
205 if (Da == 0.0) { 238 if (Da == 0.0) {
206 Temperature = T; 239 Temperature = T;
207 return true; 240 return true;
208 } else if (Da < 0.0) { 241 } else if (Da < 0.0) {
209 do { 242 do {
210 T *= 0.5; << 243 Tb -= 0.5 * abs(Tb);
211 if (T < 0.001*MeV) return false; << 244 T = Tb;
>> 245 if (Tb < 0.001*MeV) return false;
212 246
213 TotalEnergy = CalcEnergy(A,Z,aChannel,T) 247 TotalEnergy = CalcEnergy(A,Z,aChannel,T);
214 248
215 Db = (U - TotalEnergy)/U; 249 Db = (U - TotalEnergy)/U;
216 // Loop checking, 05-Aug-2015, Vladimir <<
217 } while (Db < 0.0); 250 } while (Db < 0.0);
218 251
219 } else { 252 } else {
220 do { 253 do {
221 T *= 1.5; << 254 Tb += 0.5 * abs(Tb);
>> 255 T = Tb;
222 256
223 TotalEnergy = CalcEnergy(A,Z,aChannel,T) 257 TotalEnergy = CalcEnergy(A,Z,aChannel,T);
224 258
225 Db = (U - TotalEnergy)/U; 259 Db = (U - TotalEnergy)/U;
226 // Loop checking, 05-Aug-2015, Vladimir <<
227 } while (Db > 0.0); 260 } while (Db > 0.0);
228 } 261 }
229 262
230 G4double eps = 1.0e-14 * std::abs(T-Ta); << 263 G4double eps = 1.0e-14 * abs(Tb-Ta);
231 //G4double eps = 1.0e-3 ; 264 //G4double eps = 1.0e-3 ;
232 265
233 // Start the bisection method 266 // Start the bisection method
234 for (G4int j = 0; j < 1000; j++) { 267 for (G4int j = 0; j < 1000; j++) {
235 G4double Tc = (Ta+T)*0.5; << 268 G4double Tc = (Ta+Tb)/2.0;
236 if (std::abs(Ta-Tc) <= eps) { << 269 if (abs(Ta-Tc) <= eps) {
237 Temperature = Tc; 270 Temperature = Tc;
238 return true; 271 return true;
239 } 272 }
240 273
241 T = Tc; << 274 T = Tc;
>> 275
242 TotalEnergy = CalcEnergy(A,Z,aChannel,T); 276 TotalEnergy = CalcEnergy(A,Z,aChannel,T);
>> 277
243 G4double Dc = (U - TotalEnergy)/U; 278 G4double Dc = (U - TotalEnergy)/U;
244 279
245 if (Dc == 0.0) { 280 if (Dc == 0.0) {
246 Temperature = Tc; 281 Temperature = Tc;
247 return true; 282 return true;
248 } 283 }
>> 284
249 if (Da*Dc < 0.0) { 285 if (Da*Dc < 0.0) {
250 T = Tc; << 286 Tb = Tc;
251 Db = Dc; 287 Db = Dc;
252 } else { 288 } else {
253 Ta = Tc; 289 Ta = Tc;
254 Da = Dc; 290 Da = Dc;
255 } 291 }
256 } 292 }
257 293
258 Temperature = (Ta+T)*0.5; << 294 Temperature = (Ta+Tb)/2.0;
259 return false; 295 return false;
260 } 296 }
261 297
262 G4double G4StatMF::CalcEnergy(G4int A, G4int Z << 298
263 G4double T) << 299
>> 300 G4double G4StatMF::CalcEnergy(const G4double A, const G4double Z, const G4StatMFChannel * aChannel,
>> 301 const G4double T)
264 { 302 {
265 G4double MassExcess0 = G4NucleiProperties::G << 303 G4double MassExcess0 = G4NucleiProperties::GetMassExcess(static_cast<G4int>(A),static_cast<G4int>(Z));
266 G4double ChannelEnergy = aChannel->GetFragme << 304
267 return -MassExcess0 + G4StatMFParameters::Ge << 305 G4double Coulomb = (3./5.)*(elm_coupling*Z*Z)*pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.)/
>> 306 (G4StatMFParameters::Getr0()*pow(A,1./3.));
>> 307
>> 308 G4double ChannelEnergy = aChannel->GetFragmentsEnergy(T);
>> 309
>> 310 return -MassExcess0 + Coulomb + ChannelEnergy;
>> 311
268 } 312 }
269 313
270 314
271 315
272 316