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