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25 // 22 //
26 // 23 //
>> 24 // $Id: G4StatMFMicroCanonical.cc,v 1.5 2005/06/04 13:27:49 jwellisc Exp $
>> 25 // GEANT4 tag $Name: geant4-08-00-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 <numeric> <<
32 30
33 #include "G4StatMFMicroCanonical.hh" 31 #include "G4StatMFMicroCanonical.hh"
34 #include "G4PhysicalConstants.hh" <<
35 #include "G4SystemOfUnits.hh" <<
36 #include "G4HadronicException.hh" 32 #include "G4HadronicException.hh"
37 #include "G4Pow.hh" << 33 #include <numeric>
>> 34
>> 35
>> 36 // Copy constructor
>> 37 G4StatMFMicroCanonical::G4StatMFMicroCanonical(const G4StatMFMicroCanonical &
>> 38 ) : G4VStatMFEnsemble()
>> 39 {
>> 40 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMicroCanonical::copy_constructor meant to not be accessable");
>> 41 }
>> 42
>> 43 // Operators
>> 44
>> 45 G4StatMFMicroCanonical & G4StatMFMicroCanonical::
>> 46 operator=(const G4StatMFMicroCanonical & )
>> 47 {
>> 48 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMicroCanonical::operator= meant to not be accessable");
>> 49 return *this;
>> 50 }
>> 51
>> 52
>> 53 G4bool G4StatMFMicroCanonical::operator==(const G4StatMFMicroCanonical & ) const
>> 54 {
>> 55 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMicroCanonical::operator== meant to not be accessable");
>> 56 return false;
>> 57 }
>> 58
>> 59
>> 60 G4bool G4StatMFMicroCanonical::operator!=(const G4StatMFMicroCanonical & ) const
>> 61 {
>> 62 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMicroCanonical::operator!= meant to not be accessable");
>> 63 return true;
>> 64 }
>> 65
>> 66
38 67
39 // constructor 68 // constructor
40 G4StatMFMicroCanonical::G4StatMFMicroCanonical 69 G4StatMFMicroCanonical::G4StatMFMicroCanonical(G4Fragment const & theFragment)
41 { 70 {
42 // Perform class initialization << 71 // Perform class initialization
43 Initialize(theFragment); << 72 Initialize(theFragment);
>> 73
44 } 74 }
45 75
>> 76
46 // destructor 77 // destructor
47 G4StatMFMicroCanonical::~G4StatMFMicroCanonica 78 G4StatMFMicroCanonical::~G4StatMFMicroCanonical()
48 { 79 {
49 // garbage collection 80 // garbage collection
50 if (!_ThePartitionManagerVector.empty()) { 81 if (!_ThePartitionManagerVector.empty()) {
51 std::for_each(_ThePartitionManagerVector.b 82 std::for_each(_ThePartitionManagerVector.begin(),
52 _ThePartitionManagerVector.end(), 83 _ThePartitionManagerVector.end(),
53 DeleteFragment()); 84 DeleteFragment());
54 } 85 }
55 } 86 }
56 87
>> 88
>> 89
>> 90 // Initialization method
>> 91
57 void G4StatMFMicroCanonical::Initialize(const 92 void G4StatMFMicroCanonical::Initialize(const G4Fragment & theFragment)
58 { 93 {
59 94
60 std::vector<G4StatMFMicroManager*>::iterator 95 std::vector<G4StatMFMicroManager*>::iterator it;
61 96
62 // Excitation Energy 97 // Excitation Energy
63 G4double U = theFragment.GetExcitationEnergy 98 G4double U = theFragment.GetExcitationEnergy();
64 << 99
65 G4int A = theFragment.GetA_asInt(); << 100 G4double A = theFragment.GetA();
66 G4int Z = theFragment.GetZ_asInt(); << 101 G4double Z = theFragment.GetZ();
67 G4double x = 1.0 - 2.0*Z/G4double(A); << 102
68 G4Pow* g4calc = G4Pow::GetInstance(); <<
69 <<
70 // Configuration temperature 103 // Configuration temperature
71 G4double TConfiguration = std::sqrt(8.0*U/G4 << 104 G4double TConfiguration = std::sqrt(8.0*U/A);
72 105
73 // Free internal energy at Temperature T = 0 106 // Free internal energy at Temperature T = 0
74 __FreeInternalE0 = A*( 107 __FreeInternalE0 = A*(
75 // Volume term (for T = 0) 108 // Volume term (for T = 0)
76 -G4StatMFParameters::GetE0() + 109 -G4StatMFParameters::GetE0() +
77 // Symmetry term 110 // Symmetry term
78 G4StatMFParameters::GetGamma0()*x*x << 111 G4StatMFParameters::GetGamma0()*(1.0-2.0*Z/A)*(1.0-2.0*Z/A)
79 ) + 112 ) +
80 // Surface term (for T = 0) 113 // Surface term (for T = 0)
81 G4StatMFParameters::GetBeta0()*g4calc->Z23 << 114 G4StatMFParameters::GetBeta0()*std::pow(A,2.0/3.0) +
82 // Coulomb term 115 // Coulomb term
83 elm_coupling*0.6*Z*Z/(G4StatMFParameters:: << 116 elm_coupling*(3.0/5.0)*Z*Z/(G4StatMFParameters::Getr0()*std::pow(A,1.0/3.0));
84 117
85 // Statistical weight 118 // Statistical weight
86 G4double W = 0.0; 119 G4double W = 0.0;
87 120
>> 121
88 // Mean breakup multiplicity 122 // Mean breakup multiplicity
89 __MeanMultiplicity = 0.0; 123 __MeanMultiplicity = 0.0;
90 124
91 // Mean channel temperature 125 // Mean channel temperature
92 __MeanTemperature = 0.0; 126 __MeanTemperature = 0.0;
93 127
94 // Mean channel entropy 128 // Mean channel entropy
95 __MeanEntropy = 0.0; 129 __MeanEntropy = 0.0;
96 130
97 // Calculate entropy of compound nucleus 131 // Calculate entropy of compound nucleus
98 G4double SCompoundNucleus = CalcEntropyOfCom 132 G4double SCompoundNucleus = CalcEntropyOfCompoundNucleus(theFragment,TConfiguration);
99 133
100 // Statistical weight of compound nucleus 134 // Statistical weight of compound nucleus
101 _WCompoundNucleus = 1.0; << 135 _WCompoundNucleus = 1.0; // std::exp(SCompoundNucleus - SCompoundNucleus);
102 136
103 W += _WCompoundNucleus; 137 W += _WCompoundNucleus;
104 << 138
>> 139
>> 140
105 // Maximal fragment multiplicity allowed in 141 // Maximal fragment multiplicity allowed in direct simulation
106 G4int MaxMult = G4StatMFMicroCanonical::MaxA 142 G4int MaxMult = G4StatMFMicroCanonical::MaxAllowedMultiplicity;
107 if (A > 110) MaxMult -= 1; 143 if (A > 110) MaxMult -= 1;
108 144
109 for (G4int im = 2; im <= MaxMult; im++) { << 145
>> 146
>> 147 for (G4int m = 2; m <= MaxMult; m++) {
110 G4StatMFMicroManager * aMicroManager = 148 G4StatMFMicroManager * aMicroManager =
111 new G4StatMFMicroManager(theFragment,im, << 149 new G4StatMFMicroManager(theFragment,m,__FreeInternalE0,SCompoundNucleus);
112 _ThePartitionManagerVector.push_back(aMicr 150 _ThePartitionManagerVector.push_back(aMicroManager);
113 } 151 }
114 152
115 // W is the total probability 153 // W is the total probability
116 W = std::accumulate(_ThePartitionManagerVect 154 W = std::accumulate(_ThePartitionManagerVector.begin(),
117 _ThePartitionManagerVector.end(), << 155 _ThePartitionManagerVector.end(),
118 W, [](const G4double& running_total, << 156 W,SumProbabilities());
119 G4StatMFMicroManag <<
120 { <<
121 return running_total + manager- <<
122 } ); <<
123 157
124 // Normalization of statistical weights 158 // Normalization of statistical weights
125 for (it = _ThePartitionManagerVector.begin( 159 for (it = _ThePartitionManagerVector.begin(); it != _ThePartitionManagerVector.end(); ++it)
126 { 160 {
127 (*it)->Normalize(W); 161 (*it)->Normalize(W);
128 } 162 }
129 163
130 _WCompoundNucleus /= W; 164 _WCompoundNucleus /= W;
131 165
132 __MeanMultiplicity += 1.0 * _WCompoundNucleu 166 __MeanMultiplicity += 1.0 * _WCompoundNucleus;
133 __MeanTemperature += TConfiguration * _WComp 167 __MeanTemperature += TConfiguration * _WCompoundNucleus;
134 __MeanEntropy += SCompoundNucleus * _WCompou 168 __MeanEntropy += SCompoundNucleus * _WCompoundNucleus;
135 169
>> 170
136 for (it = _ThePartitionManagerVector.begin( 171 for (it = _ThePartitionManagerVector.begin(); it != _ThePartitionManagerVector.end(); ++it)
137 { 172 {
138 __MeanMultiplicity += (*it)->GetMeanMult 173 __MeanMultiplicity += (*it)->GetMeanMultiplicity();
139 __MeanTemperature += (*it)->GetMeanTempe 174 __MeanTemperature += (*it)->GetMeanTemperature();
140 __MeanEntropy += (*it)->GetMeanEntropy() 175 __MeanEntropy += (*it)->GetMeanEntropy();
141 } 176 }
142 177
143 return; 178 return;
144 } 179 }
145 180
>> 181
>> 182
>> 183
>> 184
146 G4double G4StatMFMicroCanonical::CalcFreeInter 185 G4double G4StatMFMicroCanonical::CalcFreeInternalEnergy(const G4Fragment & theFragment,
147 G4double T) << 186 const G4double T)
148 { 187 {
149 G4int A = theFragment.GetA_asInt(); << 188 G4double A = theFragment.GetA();
150 G4int Z = theFragment.GetZ_asInt(); << 189 G4double Z = theFragment.GetZ();
151 G4double A13 = G4Pow::GetInstance()->Z13(A); << 190 G4double A13 = std::pow(A,1.0/3.0);
152 191
153 G4double InvLevelDensityPar = G4StatMFParame << 192 G4double InvLevelDensityPar = G4StatMFParameters::GetEpsilon0()*(1.0 + 3.0/(A-1.0));
154 *(1.0 + 3.0/G4double(A-1)); <<
155 193
156 G4double VolumeTerm = (-G4StatMFParameters:: 194 G4double VolumeTerm = (-G4StatMFParameters::GetE0()+T*T/InvLevelDensityPar)*A;
157 195
158 G4double SymmetryTerm = G4StatMFParameters:: << 196 G4double SymmetryTerm = G4StatMFParameters::GetGamma0()*(A - 2.0*Z)*(A - 2.0*Z)/A;
159 *(A - 2*Z)*(A - 2*Z)/G4double(A); <<
160 197
161 G4double SurfaceTerm = (G4StatMFParameters:: << 198 G4double SurfaceTerm = (G4StatMFParameters::Beta(T)-T*G4StatMFParameters::DBetaDT(T))*A13*A13;
162 - T*G4StatMFParameters::DBetaDT(T))*A1 <<
163 199
164 G4double CoulombTerm = elm_coupling*0.6*Z*Z/ << 200 G4double CoulombTerm = elm_coupling*(3.0/5.0)*Z*Z/(G4StatMFParameters::Getr0()*A13);
165 201
166 return VolumeTerm + SymmetryTerm + SurfaceTe 202 return VolumeTerm + SymmetryTerm + SurfaceTerm + CoulombTerm;
167 } 203 }
168 204
169 G4double << 205
170 G4StatMFMicroCanonical::CalcEntropyOfCompoundN << 206
171 G4double & TConf) << 207 G4double G4StatMFMicroCanonical::CalcEntropyOfCompoundNucleus(const G4Fragment & theFragment,G4double & TConf)
172 // Calculates Temperature and Entropy of com 208 // Calculates Temperature and Entropy of compound nucleus
173 { 209 {
174 G4int A = theFragment.GetA_asInt(); << 210 const G4double A = theFragment.GetA();
175 G4double U = theFragment.GetExcitationEnergy << 211 // const G4double Z = theFragment.GetZ();
176 G4double A13 = G4Pow::GetInstance()->Z13(A); << 212 const G4double U = theFragment.GetExcitationEnergy();
>> 213 const G4double A13 = std::pow(A,1.0/3.0);
177 214
178 G4double Ta = std::max(std::sqrt(U/(0.125*A) 215 G4double Ta = std::max(std::sqrt(U/(0.125*A)),0.0012*MeV);
179 G4double Tb = Ta; 216 G4double Tb = Ta;
180 217
181 G4double ECompoundNucleus = CalcFreeInternal 218 G4double ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Ta);
182 G4double Da = (U+__FreeInternalE0-ECompoundN 219 G4double Da = (U+__FreeInternalE0-ECompoundNucleus)/U;
183 G4double Db = 0.0; 220 G4double Db = 0.0;
184 << 221
185 G4double InvLevelDensity = CalcInvLevelDensi << 222
>> 223 G4double InvLevelDensity = CalcInvLevelDensity(static_cast<G4int>(A));
>> 224
186 225
187 // bracketing the solution 226 // bracketing the solution
188 if (Da == 0.0) { 227 if (Da == 0.0) {
189 TConf = Ta; 228 TConf = Ta;
190 return 2*Ta*A/InvLevelDensity - G4StatMFPa 229 return 2*Ta*A/InvLevelDensity - G4StatMFParameters::DBetaDT(Ta)*A13*A13;
191 } else if (Da < 0.0) { 230 } else if (Da < 0.0) {
192 do { 231 do {
193 Tb -= 0.5*Tb; 232 Tb -= 0.5*Tb;
194 ECompoundNucleus = CalcFreeInternalEnerg 233 ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Tb);
195 Db = (U+__FreeInternalE0-ECompoundNucleu 234 Db = (U+__FreeInternalE0-ECompoundNucleus)/U;
196 } while (Db < 0.0); 235 } while (Db < 0.0);
197 } else { 236 } else {
198 do { 237 do {
199 Tb += 0.5*Tb; 238 Tb += 0.5*Tb;
200 ECompoundNucleus = CalcFreeInternalEnerg 239 ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Tb);
201 Db = (U+__FreeInternalE0-ECompoundNucleu 240 Db = (U+__FreeInternalE0-ECompoundNucleus)/U;
202 } while (Db > 0.0); 241 } while (Db > 0.0);
203 } 242 }
204 243
>> 244
205 G4double eps = 1.0e-14 * std::abs(Tb-Ta); 245 G4double eps = 1.0e-14 * std::abs(Tb-Ta);
206 246
207 for (G4int i = 0; i < 1000; i++) { 247 for (G4int i = 0; i < 1000; i++) {
208 G4double Tc = (Ta+Tb)*0.5; << 248 G4double Tc = (Ta+Tb)/2.0;
209 if (std::abs(Ta-Tb) <= eps) { 249 if (std::abs(Ta-Tb) <= eps) {
210 TConf = Tc; 250 TConf = Tc;
211 return 2*Tc*A/InvLevelDensity - G4StatMF 251 return 2*Tc*A/InvLevelDensity - G4StatMFParameters::DBetaDT(Tc)*A13*A13;
212 } 252 }
213 ECompoundNucleus = CalcFreeInternalEnergy( 253 ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Tc);
214 G4double Dc = (U+__FreeInternalE0-ECompoun 254 G4double Dc = (U+__FreeInternalE0-ECompoundNucleus)/U;
215 255
216 if (Dc == 0.0) { 256 if (Dc == 0.0) {
217 TConf = Tc; 257 TConf = Tc;
218 return 2*Tc*A/InvLevelDensity - G4StatMF 258 return 2*Tc*A/InvLevelDensity - G4StatMFParameters::DBetaDT(Tc)*A13*A13;
219 } 259 }
220 260
221 if (Da*Dc < 0.0) { 261 if (Da*Dc < 0.0) {
222 Tb = Tc; 262 Tb = Tc;
223 Db = Dc; 263 Db = Dc;
224 } else { 264 } else {
225 Ta = Tc; 265 Ta = Tc;
226 Da = Dc; 266 Da = Dc;
227 } 267 }
228 } 268 }
229 269
230 G4cout << << 270 G4cerr <<
231 "G4StatMFMicrocanoncal::CalcEntropyOfCompo 271 "G4StatMFMicrocanoncal::CalcEntropyOfCompoundNucleus: I can't calculate the temperature"
232 << G4endl; 272 << G4endl;
233 273
234 return 0.0; 274 return 0.0;
235 } 275 }
236 276
>> 277
>> 278
>> 279
237 G4StatMFChannel * G4StatMFMicroCanonical::Cho 280 G4StatMFChannel * G4StatMFMicroCanonical::ChooseAandZ(const G4Fragment & theFragment)
238 // Choice of fragment atomic numbers and cha 281 // Choice of fragment atomic numbers and charges
239 { 282 {
240 // We choose a multiplicity (1,2,3,...) and << 283 // We choose a multiplicity (1,2,3,...) and then a channel
241 G4double RandNumber = G4UniformRand(); << 284 G4double RandNumber = G4UniformRand();
242 285
243 if (RandNumber < _WCompoundNucleus) { << 286 if (RandNumber < _WCompoundNucleus) {
244 287
245 G4StatMFChannel * aChannel = new G4StatMFC << 288 G4StatMFChannel * aChannel = new G4StatMFChannel;
246 aChannel->CreateFragment(theFragment.GetA_ << 289 aChannel->CreateFragment(theFragment.GetA(),theFragment.GetZ());
247 return aChannel; << 290 return aChannel;
248 291
249 } else { << 292 } else {
250 293
251 G4double AccumWeight = _WCompoundNucleus; << 294 G4double AccumWeight = _WCompoundNucleus;
252 std::vector<G4StatMFMicroManager*>::iterat << 295 std::vector<G4StatMFMicroManager*>::iterator it;
253 for (it = _ThePartitionManagerVector.begin << 296 for (it = _ThePartitionManagerVector.begin(); it != _ThePartitionManagerVector.end(); ++it) {
254 AccumWeight += (*it)->GetProbability(); << 297 AccumWeight += (*it)->GetProbability();
255 if (RandNumber < AccumWeight) { << 298 if (RandNumber < AccumWeight) {
256 return (*it)->ChooseChannel(theFragment.GetA << 299 return (*it)->ChooseChannel(theFragment.GetA(),theFragment.GetZ(),__MeanTemperature);
257 } << 300 }
>> 301 }
>> 302 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMicroCanonical::ChooseAandZ: wrong normalization!");
258 } 303 }
259 throw G4HadronicException(__FILE__, __LINE <<
260 } <<
261 304
262 return 0; << 305 return 0;
263 } 306 }
264 307
265 G4double G4StatMFMicroCanonical::CalcInvLevelD << 308
>> 309
>> 310
>> 311 G4double G4StatMFMicroCanonical::CalcInvLevelDensity(const G4int anA)
266 { 312 {
267 G4double res = 0.0; << 313 // Calculate Inverse Density Level
268 if (anA > 1) { << 314 // Epsilon0*(1 + 3 /(Af - 1))
269 res = G4StatMFParameters::GetEpsilon0()*(1 << 315 if (anA == 1) return 0.0;
270 } << 316 else return
271 return res; << 317 G4StatMFParameters::GetEpsilon0()*(1.0+3.0/(anA - 1.0));
272 } 318 }
273 319