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26 // 26 //
>> 27 // $Id: G4StatMFMicroCanonical.cc,v 1.7 2008/07/25 11:20:47 vnivanch Exp $
>> 28 // GEANT4 tag $Name: geant4-09-02 $
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 <numeric> <<
32 33
33 #include "G4StatMFMicroCanonical.hh" 34 #include "G4StatMFMicroCanonical.hh"
34 #include "G4PhysicalConstants.hh" <<
35 #include "G4SystemOfUnits.hh" <<
36 #include "G4HadronicException.hh" 35 #include "G4HadronicException.hh"
37 #include "G4Pow.hh" << 36 #include <numeric>
>> 37
>> 38
>> 39 // Copy constructor
>> 40 G4StatMFMicroCanonical::G4StatMFMicroCanonical(const G4StatMFMicroCanonical &
>> 41 ) : G4VStatMFEnsemble()
>> 42 {
>> 43 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMicroCanonical::copy_constructor meant to not be accessable");
>> 44 }
>> 45
>> 46 // Operators
>> 47
>> 48 G4StatMFMicroCanonical & G4StatMFMicroCanonical::
>> 49 operator=(const G4StatMFMicroCanonical & )
>> 50 {
>> 51 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMicroCanonical::operator= meant to not be accessable");
>> 52 return *this;
>> 53 }
>> 54
>> 55
>> 56 G4bool G4StatMFMicroCanonical::operator==(const G4StatMFMicroCanonical & ) const
>> 57 {
>> 58 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMicroCanonical::operator== meant to not be accessable");
>> 59 return false;
>> 60 }
>> 61
>> 62
>> 63 G4bool G4StatMFMicroCanonical::operator!=(const G4StatMFMicroCanonical & ) const
>> 64 {
>> 65 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMicroCanonical::operator!= meant to not be accessable");
>> 66 return true;
>> 67 }
>> 68
>> 69
38 70
39 // constructor 71 // constructor
40 G4StatMFMicroCanonical::G4StatMFMicroCanonical 72 G4StatMFMicroCanonical::G4StatMFMicroCanonical(G4Fragment const & theFragment)
41 { 73 {
42 // Perform class initialization << 74 // Perform class initialization
43 Initialize(theFragment); << 75 Initialize(theFragment);
>> 76
44 } 77 }
45 78
>> 79
46 // destructor 80 // destructor
47 G4StatMFMicroCanonical::~G4StatMFMicroCanonica 81 G4StatMFMicroCanonical::~G4StatMFMicroCanonical()
48 { 82 {
49 // garbage collection 83 // garbage collection
50 if (!_ThePartitionManagerVector.empty()) { 84 if (!_ThePartitionManagerVector.empty()) {
51 std::for_each(_ThePartitionManagerVector.b 85 std::for_each(_ThePartitionManagerVector.begin(),
52 _ThePartitionManagerVector.end(), 86 _ThePartitionManagerVector.end(),
53 DeleteFragment()); 87 DeleteFragment());
54 } 88 }
55 } 89 }
56 90
>> 91
>> 92
>> 93 // Initialization method
>> 94
57 void G4StatMFMicroCanonical::Initialize(const 95 void G4StatMFMicroCanonical::Initialize(const G4Fragment & theFragment)
58 { 96 {
59 97
60 std::vector<G4StatMFMicroManager*>::iterator 98 std::vector<G4StatMFMicroManager*>::iterator it;
61 99
62 // Excitation Energy 100 // Excitation Energy
63 G4double U = theFragment.GetExcitationEnergy 101 G4double U = theFragment.GetExcitationEnergy();
64 << 102
65 G4int A = theFragment.GetA_asInt(); << 103 G4double A = theFragment.GetA();
66 G4int Z = theFragment.GetZ_asInt(); << 104 G4double Z = theFragment.GetZ();
67 G4double x = 1.0 - 2.0*Z/G4double(A); << 105
68 G4Pow* g4calc = G4Pow::GetInstance(); <<
69 <<
70 // Configuration temperature 106 // Configuration temperature
71 G4double TConfiguration = std::sqrt(8.0*U/G4 << 107 G4double TConfiguration = std::sqrt(8.0*U/A);
72 108
73 // Free internal energy at Temperature T = 0 109 // Free internal energy at Temperature T = 0
74 __FreeInternalE0 = A*( 110 __FreeInternalE0 = A*(
75 // Volume term (for T = 0) 111 // Volume term (for T = 0)
76 -G4StatMFParameters::GetE0() + 112 -G4StatMFParameters::GetE0() +
77 // Symmetry term 113 // Symmetry term
78 G4StatMFParameters::GetGamma0()*x*x << 114 G4StatMFParameters::GetGamma0()*(1.0-2.0*Z/A)*(1.0-2.0*Z/A)
79 ) + 115 ) +
80 // Surface term (for T = 0) 116 // Surface term (for T = 0)
81 G4StatMFParameters::GetBeta0()*g4calc->Z23 << 117 G4StatMFParameters::GetBeta0()*std::pow(A,2.0/3.0) +
82 // Coulomb term 118 // Coulomb term
83 elm_coupling*0.6*Z*Z/(G4StatMFParameters:: << 119 elm_coupling*(3.0/5.0)*Z*Z/(G4StatMFParameters::Getr0()*std::pow(A,1.0/3.0));
84 120
85 // Statistical weight 121 // Statistical weight
86 G4double W = 0.0; 122 G4double W = 0.0;
87 123
>> 124
88 // Mean breakup multiplicity 125 // Mean breakup multiplicity
89 __MeanMultiplicity = 0.0; 126 __MeanMultiplicity = 0.0;
90 127
91 // Mean channel temperature 128 // Mean channel temperature
92 __MeanTemperature = 0.0; 129 __MeanTemperature = 0.0;
93 130
94 // Mean channel entropy 131 // Mean channel entropy
95 __MeanEntropy = 0.0; 132 __MeanEntropy = 0.0;
96 133
97 // Calculate entropy of compound nucleus 134 // Calculate entropy of compound nucleus
98 G4double SCompoundNucleus = CalcEntropyOfCom 135 G4double SCompoundNucleus = CalcEntropyOfCompoundNucleus(theFragment,TConfiguration);
99 136
100 // Statistical weight of compound nucleus 137 // Statistical weight of compound nucleus
101 _WCompoundNucleus = 1.0; << 138 _WCompoundNucleus = 1.0; // std::exp(SCompoundNucleus - SCompoundNucleus);
102 139
103 W += _WCompoundNucleus; 140 W += _WCompoundNucleus;
104 << 141
>> 142
>> 143
105 // Maximal fragment multiplicity allowed in 144 // Maximal fragment multiplicity allowed in direct simulation
106 G4int MaxMult = G4StatMFMicroCanonical::MaxA 145 G4int MaxMult = G4StatMFMicroCanonical::MaxAllowedMultiplicity;
107 if (A > 110) MaxMult -= 1; 146 if (A > 110) MaxMult -= 1;
108 147
109 for (G4int im = 2; im <= MaxMult; im++) { << 148
>> 149
>> 150 for (G4int m = 2; m <= MaxMult; m++) {
110 G4StatMFMicroManager * aMicroManager = 151 G4StatMFMicroManager * aMicroManager =
111 new G4StatMFMicroManager(theFragment,im, << 152 new G4StatMFMicroManager(theFragment,m,__FreeInternalE0,SCompoundNucleus);
112 _ThePartitionManagerVector.push_back(aMicr 153 _ThePartitionManagerVector.push_back(aMicroManager);
113 } 154 }
114 155
115 // W is the total probability 156 // W is the total probability
116 W = std::accumulate(_ThePartitionManagerVect 157 W = std::accumulate(_ThePartitionManagerVector.begin(),
117 _ThePartitionManagerVector.end(), << 158 _ThePartitionManagerVector.end(),
118 W, [](const G4double& running_total, << 159 W,SumProbabilities());
119 G4StatMFMicroManag <<
120 { <<
121 return running_total + manager- <<
122 } ); <<
123 160
124 // Normalization of statistical weights 161 // Normalization of statistical weights
125 for (it = _ThePartitionManagerVector.begin( 162 for (it = _ThePartitionManagerVector.begin(); it != _ThePartitionManagerVector.end(); ++it)
126 { 163 {
127 (*it)->Normalize(W); 164 (*it)->Normalize(W);
128 } 165 }
129 166
130 _WCompoundNucleus /= W; 167 _WCompoundNucleus /= W;
131 168
132 __MeanMultiplicity += 1.0 * _WCompoundNucleu 169 __MeanMultiplicity += 1.0 * _WCompoundNucleus;
133 __MeanTemperature += TConfiguration * _WComp 170 __MeanTemperature += TConfiguration * _WCompoundNucleus;
134 __MeanEntropy += SCompoundNucleus * _WCompou 171 __MeanEntropy += SCompoundNucleus * _WCompoundNucleus;
135 172
>> 173
136 for (it = _ThePartitionManagerVector.begin( 174 for (it = _ThePartitionManagerVector.begin(); it != _ThePartitionManagerVector.end(); ++it)
137 { 175 {
138 __MeanMultiplicity += (*it)->GetMeanMult 176 __MeanMultiplicity += (*it)->GetMeanMultiplicity();
139 __MeanTemperature += (*it)->GetMeanTempe 177 __MeanTemperature += (*it)->GetMeanTemperature();
140 __MeanEntropy += (*it)->GetMeanEntropy() 178 __MeanEntropy += (*it)->GetMeanEntropy();
141 } 179 }
142 180
143 return; 181 return;
144 } 182 }
145 183
>> 184
>> 185
>> 186
>> 187
146 G4double G4StatMFMicroCanonical::CalcFreeInter 188 G4double G4StatMFMicroCanonical::CalcFreeInternalEnergy(const G4Fragment & theFragment,
147 G4double T) << 189 const G4double T)
148 { 190 {
149 G4int A = theFragment.GetA_asInt(); << 191 G4double A = theFragment.GetA();
150 G4int Z = theFragment.GetZ_asInt(); << 192 G4double Z = theFragment.GetZ();
151 G4double A13 = G4Pow::GetInstance()->Z13(A); << 193 G4double A13 = std::pow(A,1.0/3.0);
152 194
153 G4double InvLevelDensityPar = G4StatMFParame << 195 G4double InvLevelDensityPar = G4StatMFParameters::GetEpsilon0()*(1.0 + 3.0/(A-1.0));
154 *(1.0 + 3.0/G4double(A-1)); <<
155 196
156 G4double VolumeTerm = (-G4StatMFParameters:: 197 G4double VolumeTerm = (-G4StatMFParameters::GetE0()+T*T/InvLevelDensityPar)*A;
157 198
158 G4double SymmetryTerm = G4StatMFParameters:: << 199 G4double SymmetryTerm = G4StatMFParameters::GetGamma0()*(A - 2.0*Z)*(A - 2.0*Z)/A;
159 *(A - 2*Z)*(A - 2*Z)/G4double(A); <<
160 200
161 G4double SurfaceTerm = (G4StatMFParameters:: << 201 G4double SurfaceTerm = (G4StatMFParameters::Beta(T)-T*G4StatMFParameters::DBetaDT(T))*A13*A13;
162 - T*G4StatMFParameters::DBetaDT(T))*A1 <<
163 202
164 G4double CoulombTerm = elm_coupling*0.6*Z*Z/ << 203 G4double CoulombTerm = elm_coupling*(3.0/5.0)*Z*Z/(G4StatMFParameters::Getr0()*A13);
165 204
166 return VolumeTerm + SymmetryTerm + SurfaceTe 205 return VolumeTerm + SymmetryTerm + SurfaceTerm + CoulombTerm;
167 } 206 }
168 207
169 G4double << 208
170 G4StatMFMicroCanonical::CalcEntropyOfCompoundN << 209
171 G4double & TConf) << 210 G4double G4StatMFMicroCanonical::CalcEntropyOfCompoundNucleus(const G4Fragment & theFragment,G4double & TConf)
172 // Calculates Temperature and Entropy of com 211 // Calculates Temperature and Entropy of compound nucleus
173 { 212 {
174 G4int A = theFragment.GetA_asInt(); << 213 const G4double A = theFragment.GetA();
175 G4double U = theFragment.GetExcitationEnergy << 214 // const G4double Z = theFragment.GetZ();
176 G4double A13 = G4Pow::GetInstance()->Z13(A); << 215 const G4double U = theFragment.GetExcitationEnergy();
>> 216 const G4double A13 = std::pow(A,1.0/3.0);
177 217
178 G4double Ta = std::max(std::sqrt(U/(0.125*A) 218 G4double Ta = std::max(std::sqrt(U/(0.125*A)),0.0012*MeV);
179 G4double Tb = Ta; 219 G4double Tb = Ta;
180 220
181 G4double ECompoundNucleus = CalcFreeInternal 221 G4double ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Ta);
182 G4double Da = (U+__FreeInternalE0-ECompoundN 222 G4double Da = (U+__FreeInternalE0-ECompoundNucleus)/U;
183 G4double Db = 0.0; 223 G4double Db = 0.0;
184 << 224
185 G4double InvLevelDensity = CalcInvLevelDensi << 225
>> 226 G4double InvLevelDensity = CalcInvLevelDensity(static_cast<G4int>(A));
>> 227
186 228
187 // bracketing the solution 229 // bracketing the solution
188 if (Da == 0.0) { 230 if (Da == 0.0) {
189 TConf = Ta; 231 TConf = Ta;
190 return 2*Ta*A/InvLevelDensity - G4StatMFPa 232 return 2*Ta*A/InvLevelDensity - G4StatMFParameters::DBetaDT(Ta)*A13*A13;
191 } else if (Da < 0.0) { 233 } else if (Da < 0.0) {
192 do { 234 do {
193 Tb -= 0.5*Tb; 235 Tb -= 0.5*Tb;
194 ECompoundNucleus = CalcFreeInternalEnerg 236 ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Tb);
195 Db = (U+__FreeInternalE0-ECompoundNucleu 237 Db = (U+__FreeInternalE0-ECompoundNucleus)/U;
196 } while (Db < 0.0); 238 } while (Db < 0.0);
197 } else { 239 } else {
198 do { 240 do {
199 Tb += 0.5*Tb; 241 Tb += 0.5*Tb;
200 ECompoundNucleus = CalcFreeInternalEnerg 242 ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Tb);
201 Db = (U+__FreeInternalE0-ECompoundNucleu 243 Db = (U+__FreeInternalE0-ECompoundNucleus)/U;
202 } while (Db > 0.0); 244 } while (Db > 0.0);
203 } 245 }
204 246
>> 247
205 G4double eps = 1.0e-14 * std::abs(Tb-Ta); 248 G4double eps = 1.0e-14 * std::abs(Tb-Ta);
206 249
207 for (G4int i = 0; i < 1000; i++) { 250 for (G4int i = 0; i < 1000; i++) {
208 G4double Tc = (Ta+Tb)*0.5; << 251 G4double Tc = (Ta+Tb)/2.0;
209 if (std::abs(Ta-Tb) <= eps) { 252 if (std::abs(Ta-Tb) <= eps) {
210 TConf = Tc; 253 TConf = Tc;
211 return 2*Tc*A/InvLevelDensity - G4StatMF 254 return 2*Tc*A/InvLevelDensity - G4StatMFParameters::DBetaDT(Tc)*A13*A13;
212 } 255 }
213 ECompoundNucleus = CalcFreeInternalEnergy( 256 ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Tc);
214 G4double Dc = (U+__FreeInternalE0-ECompoun 257 G4double Dc = (U+__FreeInternalE0-ECompoundNucleus)/U;
215 258
216 if (Dc == 0.0) { 259 if (Dc == 0.0) {
217 TConf = Tc; 260 TConf = Tc;
218 return 2*Tc*A/InvLevelDensity - G4StatMF 261 return 2*Tc*A/InvLevelDensity - G4StatMFParameters::DBetaDT(Tc)*A13*A13;
219 } 262 }
220 263
221 if (Da*Dc < 0.0) { 264 if (Da*Dc < 0.0) {
222 Tb = Tc; 265 Tb = Tc;
223 Db = Dc; 266 Db = Dc;
224 } else { 267 } else {
225 Ta = Tc; 268 Ta = Tc;
226 Da = Dc; 269 Da = Dc;
227 } 270 }
228 } 271 }
229 272
230 G4cout << << 273 G4cerr <<
231 "G4StatMFMicrocanoncal::CalcEntropyOfCompo 274 "G4StatMFMicrocanoncal::CalcEntropyOfCompoundNucleus: I can't calculate the temperature"
232 << G4endl; 275 << G4endl;
233 276
234 return 0.0; 277 return 0.0;
235 } 278 }
236 279
>> 280
>> 281
>> 282
237 G4StatMFChannel * G4StatMFMicroCanonical::Cho 283 G4StatMFChannel * G4StatMFMicroCanonical::ChooseAandZ(const G4Fragment & theFragment)
238 // Choice of fragment atomic numbers and cha 284 // Choice of fragment atomic numbers and charges
239 { 285 {
240 // We choose a multiplicity (1,2,3,...) and << 286 // We choose a multiplicity (1,2,3,...) and then a channel
241 G4double RandNumber = G4UniformRand(); << 287 G4double RandNumber = G4UniformRand();
242 288
243 if (RandNumber < _WCompoundNucleus) { << 289 if (RandNumber < _WCompoundNucleus) {
244 290
245 G4StatMFChannel * aChannel = new G4StatMFC << 291 G4StatMFChannel * aChannel = new G4StatMFChannel;
246 aChannel->CreateFragment(theFragment.GetA_ << 292 aChannel->CreateFragment(theFragment.GetA(),theFragment.GetZ());
247 return aChannel; << 293 return aChannel;
248 294
249 } else { << 295 } else {
250 296
251 G4double AccumWeight = _WCompoundNucleus; << 297 G4double AccumWeight = _WCompoundNucleus;
252 std::vector<G4StatMFMicroManager*>::iterat << 298 std::vector<G4StatMFMicroManager*>::iterator it;
253 for (it = _ThePartitionManagerVector.begin << 299 for (it = _ThePartitionManagerVector.begin(); it != _ThePartitionManagerVector.end(); ++it) {
254 AccumWeight += (*it)->GetProbability(); << 300 AccumWeight += (*it)->GetProbability();
255 if (RandNumber < AccumWeight) { << 301 if (RandNumber < AccumWeight) {
256 return (*it)->ChooseChannel(theFragment.GetA << 302 return (*it)->ChooseChannel(theFragment.GetA(),theFragment.GetZ(),__MeanTemperature);
257 } << 303 }
>> 304 }
>> 305 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMicroCanonical::ChooseAandZ: wrong normalization!");
258 } 306 }
259 throw G4HadronicException(__FILE__, __LINE <<
260 } <<
261 307
262 return 0; << 308 return 0;
263 } 309 }
264 310
265 G4double G4StatMFMicroCanonical::CalcInvLevelD << 311
>> 312
>> 313
>> 314 G4double G4StatMFMicroCanonical::CalcInvLevelDensity(const G4int anA)
266 { 315 {
267 G4double res = 0.0; << 316 // Calculate Inverse Density Level
268 if (anA > 1) { << 317 // Epsilon0*(1 + 3 /(Af - 1))
269 res = G4StatMFParameters::GetEpsilon0()*(1 << 318 if (anA == 1) return 0.0;
270 } << 319 else return
271 return res; << 320 G4StatMFParameters::GetEpsilon0()*(1.0+3.0/(anA - 1.0));
272 } 321 }
273 322