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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: not supported by cvs2svn $
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 "G4Pow.hh"
>> 37 #include <numeric>
38 38
39 // constructor 39 // constructor
40 G4StatMFMicroCanonical::G4StatMFMicroCanonical 40 G4StatMFMicroCanonical::G4StatMFMicroCanonical(G4Fragment const & theFragment)
41 { 41 {
42 // Perform class initialization << 42 // Perform class initialization
43 Initialize(theFragment); << 43 Initialize(theFragment);
>> 44
44 } 45 }
45 46
>> 47
46 // destructor 48 // destructor
47 G4StatMFMicroCanonical::~G4StatMFMicroCanonica 49 G4StatMFMicroCanonical::~G4StatMFMicroCanonical()
48 { 50 {
49 // garbage collection 51 // garbage collection
50 if (!_ThePartitionManagerVector.empty()) { 52 if (!_ThePartitionManagerVector.empty()) {
51 std::for_each(_ThePartitionManagerVector.b 53 std::for_each(_ThePartitionManagerVector.begin(),
52 _ThePartitionManagerVector.end(), 54 _ThePartitionManagerVector.end(),
53 DeleteFragment()); 55 DeleteFragment());
54 } 56 }
55 } 57 }
56 58
>> 59
>> 60
>> 61 // Initialization method
>> 62
57 void G4StatMFMicroCanonical::Initialize(const 63 void G4StatMFMicroCanonical::Initialize(const G4Fragment & theFragment)
58 { 64 {
59 65
60 std::vector<G4StatMFMicroManager*>::iterator 66 std::vector<G4StatMFMicroManager*>::iterator it;
61 67
62 // Excitation Energy 68 // Excitation Energy
63 G4double U = theFragment.GetExcitationEnergy 69 G4double U = theFragment.GetExcitationEnergy();
64 70
65 G4int A = theFragment.GetA_asInt(); 71 G4int A = theFragment.GetA_asInt();
66 G4int Z = theFragment.GetZ_asInt(); 72 G4int Z = theFragment.GetZ_asInt();
67 G4double x = 1.0 - 2.0*Z/G4double(A); 73 G4double x = 1.0 - 2.0*Z/G4double(A);
68 G4Pow* g4calc = G4Pow::GetInstance(); << 74 G4Pow* g4pow = G4Pow::GetInstance();
69 75
70 // Configuration temperature 76 // Configuration temperature
71 G4double TConfiguration = std::sqrt(8.0*U/G4 77 G4double TConfiguration = std::sqrt(8.0*U/G4double(A));
72 78
73 // Free internal energy at Temperature T = 0 79 // Free internal energy at Temperature T = 0
74 __FreeInternalE0 = A*( 80 __FreeInternalE0 = A*(
75 // Volume term (for T = 0) 81 // Volume term (for T = 0)
76 -G4StatMFParameters::GetE0() + 82 -G4StatMFParameters::GetE0() +
77 // Symmetry term 83 // Symmetry term
78 G4StatMFParameters::GetGamma0()*x*x 84 G4StatMFParameters::GetGamma0()*x*x
79 ) + 85 ) +
80 // Surface term (for T = 0) 86 // Surface term (for T = 0)
81 G4StatMFParameters::GetBeta0()*g4calc->Z23 << 87 G4StatMFParameters::GetBeta0()*g4pow->Z23(A) +
82 // Coulomb term 88 // Coulomb term
83 elm_coupling*0.6*Z*Z/(G4StatMFParameters:: << 89 elm_coupling*(3.0/5.0)*Z*Z/(G4StatMFParameters::Getr0()*g4pow->Z13(A));
84 90
85 // Statistical weight 91 // Statistical weight
86 G4double W = 0.0; 92 G4double W = 0.0;
87 93
>> 94
88 // Mean breakup multiplicity 95 // Mean breakup multiplicity
89 __MeanMultiplicity = 0.0; 96 __MeanMultiplicity = 0.0;
90 97
91 // Mean channel temperature 98 // Mean channel temperature
92 __MeanTemperature = 0.0; 99 __MeanTemperature = 0.0;
93 100
94 // Mean channel entropy 101 // Mean channel entropy
95 __MeanEntropy = 0.0; 102 __MeanEntropy = 0.0;
96 103
97 // Calculate entropy of compound nucleus 104 // Calculate entropy of compound nucleus
98 G4double SCompoundNucleus = CalcEntropyOfCom 105 G4double SCompoundNucleus = CalcEntropyOfCompoundNucleus(theFragment,TConfiguration);
99 106
100 // Statistical weight of compound nucleus 107 // Statistical weight of compound nucleus
101 _WCompoundNucleus = 1.0; << 108 _WCompoundNucleus = 1.0; // std::exp(SCompoundNucleus - SCompoundNucleus);
102 109
103 W += _WCompoundNucleus; 110 W += _WCompoundNucleus;
104 << 111
>> 112
>> 113
105 // Maximal fragment multiplicity allowed in 114 // Maximal fragment multiplicity allowed in direct simulation
106 G4int MaxMult = G4StatMFMicroCanonical::MaxA 115 G4int MaxMult = G4StatMFMicroCanonical::MaxAllowedMultiplicity;
107 if (A > 110) MaxMult -= 1; 116 if (A > 110) MaxMult -= 1;
108 117
109 for (G4int im = 2; im <= MaxMult; im++) { << 118
>> 119
>> 120 for (G4int m = 2; m <= MaxMult; m++) {
110 G4StatMFMicroManager * aMicroManager = 121 G4StatMFMicroManager * aMicroManager =
111 new G4StatMFMicroManager(theFragment,im, << 122 new G4StatMFMicroManager(theFragment,m,__FreeInternalE0,SCompoundNucleus);
112 _ThePartitionManagerVector.push_back(aMicr 123 _ThePartitionManagerVector.push_back(aMicroManager);
113 } 124 }
114 125
115 // W is the total probability 126 // W is the total probability
116 W = std::accumulate(_ThePartitionManagerVect 127 W = std::accumulate(_ThePartitionManagerVector.begin(),
117 _ThePartitionManagerVector.end(), << 128 _ThePartitionManagerVector.end(),
118 W, [](const G4double& running_total, << 129 W,SumProbabilities());
119 G4StatMFMicroManag <<
120 { <<
121 return running_total + manager- <<
122 } ); <<
123 130
124 // Normalization of statistical weights 131 // Normalization of statistical weights
125 for (it = _ThePartitionManagerVector.begin( 132 for (it = _ThePartitionManagerVector.begin(); it != _ThePartitionManagerVector.end(); ++it)
126 { 133 {
127 (*it)->Normalize(W); 134 (*it)->Normalize(W);
128 } 135 }
129 136
130 _WCompoundNucleus /= W; 137 _WCompoundNucleus /= W;
131 138
132 __MeanMultiplicity += 1.0 * _WCompoundNucleu 139 __MeanMultiplicity += 1.0 * _WCompoundNucleus;
133 __MeanTemperature += TConfiguration * _WComp 140 __MeanTemperature += TConfiguration * _WCompoundNucleus;
134 __MeanEntropy += SCompoundNucleus * _WCompou 141 __MeanEntropy += SCompoundNucleus * _WCompoundNucleus;
135 142
>> 143
136 for (it = _ThePartitionManagerVector.begin( 144 for (it = _ThePartitionManagerVector.begin(); it != _ThePartitionManagerVector.end(); ++it)
137 { 145 {
138 __MeanMultiplicity += (*it)->GetMeanMult 146 __MeanMultiplicity += (*it)->GetMeanMultiplicity();
139 __MeanTemperature += (*it)->GetMeanTempe 147 __MeanTemperature += (*it)->GetMeanTemperature();
140 __MeanEntropy += (*it)->GetMeanEntropy() 148 __MeanEntropy += (*it)->GetMeanEntropy();
141 } 149 }
142 150
143 return; 151 return;
144 } 152 }
145 153
>> 154
146 G4double G4StatMFMicroCanonical::CalcFreeInter 155 G4double G4StatMFMicroCanonical::CalcFreeInternalEnergy(const G4Fragment & theFragment,
147 G4double T) 156 G4double T)
148 { 157 {
149 G4int A = theFragment.GetA_asInt(); 158 G4int A = theFragment.GetA_asInt();
150 G4int Z = theFragment.GetZ_asInt(); 159 G4int Z = theFragment.GetZ_asInt();
151 G4double A13 = G4Pow::GetInstance()->Z13(A); 160 G4double A13 = G4Pow::GetInstance()->Z13(A);
152 161
153 G4double InvLevelDensityPar = G4StatMFParame << 162 G4double InvLevelDensityPar = G4StatMFParameters::GetEpsilon0()*(1.0 + 3.0/G4double(A-1));
154 *(1.0 + 3.0/G4double(A-1)); <<
155 163
156 G4double VolumeTerm = (-G4StatMFParameters:: 164 G4double VolumeTerm = (-G4StatMFParameters::GetE0()+T*T/InvLevelDensityPar)*A;
157 165
158 G4double SymmetryTerm = G4StatMFParameters:: << 166 G4double SymmetryTerm = G4StatMFParameters::GetGamma0()*(A - 2*Z)*(A - 2*Z)/G4double(A);
159 *(A - 2*Z)*(A - 2*Z)/G4double(A); <<
160 167
161 G4double SurfaceTerm = (G4StatMFParameters:: << 168 G4double SurfaceTerm = (G4StatMFParameters::Beta(T)-T*G4StatMFParameters::DBetaDT(T))*A13*A13;
162 - T*G4StatMFParameters::DBetaDT(T))*A1 <<
163 169
164 G4double CoulombTerm = elm_coupling*0.6*Z*Z/ << 170 G4double CoulombTerm = elm_coupling*(3.0/5.0)*Z*Z/(G4StatMFParameters::Getr0()*A13);
165 171
166 return VolumeTerm + SymmetryTerm + SurfaceTe 172 return VolumeTerm + SymmetryTerm + SurfaceTerm + CoulombTerm;
167 } 173 }
168 174
169 G4double 175 G4double
170 G4StatMFMicroCanonical::CalcEntropyOfCompoundN 176 G4StatMFMicroCanonical::CalcEntropyOfCompoundNucleus(const G4Fragment & theFragment,
171 G4double & TConf) 177 G4double & TConf)
172 // Calculates Temperature and Entropy of com 178 // Calculates Temperature and Entropy of compound nucleus
173 { 179 {
174 G4int A = theFragment.GetA_asInt(); 180 G4int A = theFragment.GetA_asInt();
>> 181 // const G4double Z = theFragment.GetZ();
175 G4double U = theFragment.GetExcitationEnergy 182 G4double U = theFragment.GetExcitationEnergy();
176 G4double A13 = G4Pow::GetInstance()->Z13(A); 183 G4double A13 = G4Pow::GetInstance()->Z13(A);
177 184
178 G4double Ta = std::max(std::sqrt(U/(0.125*A) 185 G4double Ta = std::max(std::sqrt(U/(0.125*A)),0.0012*MeV);
179 G4double Tb = Ta; 186 G4double Tb = Ta;
180 187
181 G4double ECompoundNucleus = CalcFreeInternal 188 G4double ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Ta);
182 G4double Da = (U+__FreeInternalE0-ECompoundN 189 G4double Da = (U+__FreeInternalE0-ECompoundNucleus)/U;
183 G4double Db = 0.0; 190 G4double Db = 0.0;
184 191
185 G4double InvLevelDensity = CalcInvLevelDensi << 192 G4double InvLevelDensity = CalcInvLevelDensity(static_cast<G4int>(A));
186 193
187 // bracketing the solution 194 // bracketing the solution
188 if (Da == 0.0) { 195 if (Da == 0.0) {
189 TConf = Ta; 196 TConf = Ta;
190 return 2*Ta*A/InvLevelDensity - G4StatMFPa 197 return 2*Ta*A/InvLevelDensity - G4StatMFParameters::DBetaDT(Ta)*A13*A13;
191 } else if (Da < 0.0) { 198 } else if (Da < 0.0) {
192 do { 199 do {
193 Tb -= 0.5*Tb; 200 Tb -= 0.5*Tb;
194 ECompoundNucleus = CalcFreeInternalEnerg 201 ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Tb);
195 Db = (U+__FreeInternalE0-ECompoundNucleu 202 Db = (U+__FreeInternalE0-ECompoundNucleus)/U;
196 } while (Db < 0.0); 203 } while (Db < 0.0);
197 } else { 204 } else {
198 do { 205 do {
199 Tb += 0.5*Tb; 206 Tb += 0.5*Tb;
200 ECompoundNucleus = CalcFreeInternalEnerg 207 ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Tb);
201 Db = (U+__FreeInternalE0-ECompoundNucleu 208 Db = (U+__FreeInternalE0-ECompoundNucleus)/U;
202 } while (Db > 0.0); 209 } while (Db > 0.0);
203 } 210 }
204 211
205 G4double eps = 1.0e-14 * std::abs(Tb-Ta); << 212 G4double eps = 1.0e-14 * std::fabs(Tb-Ta);
206 213
207 for (G4int i = 0; i < 1000; i++) { 214 for (G4int i = 0; i < 1000; i++) {
208 G4double Tc = (Ta+Tb)*0.5; << 215 G4double Tc = (Ta+Tb)/2.0;
209 if (std::abs(Ta-Tb) <= eps) { 216 if (std::abs(Ta-Tb) <= eps) {
210 TConf = Tc; 217 TConf = Tc;
211 return 2*Tc*A/InvLevelDensity - G4StatMF 218 return 2*Tc*A/InvLevelDensity - G4StatMFParameters::DBetaDT(Tc)*A13*A13;
212 } 219 }
213 ECompoundNucleus = CalcFreeInternalEnergy( 220 ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Tc);
214 G4double Dc = (U+__FreeInternalE0-ECompoun 221 G4double Dc = (U+__FreeInternalE0-ECompoundNucleus)/U;
215 222
216 if (Dc == 0.0) { 223 if (Dc == 0.0) {
217 TConf = Tc; 224 TConf = Tc;
218 return 2*Tc*A/InvLevelDensity - G4StatMF 225 return 2*Tc*A/InvLevelDensity - G4StatMFParameters::DBetaDT(Tc)*A13*A13;
219 } 226 }
220 227
221 if (Da*Dc < 0.0) { 228 if (Da*Dc < 0.0) {
222 Tb = Tc; 229 Tb = Tc;
223 Db = Dc; 230 Db = Dc;
224 } else { 231 } else {
225 Ta = Tc; 232 Ta = Tc;
226 Da = Dc; 233 Da = Dc;
227 } 234 }
228 } 235 }
229 236
230 G4cout << << 237 G4cerr <<
231 "G4StatMFMicrocanoncal::CalcEntropyOfCompo 238 "G4StatMFMicrocanoncal::CalcEntropyOfCompoundNucleus: I can't calculate the temperature"
232 << G4endl; 239 << G4endl;
233 240
234 return 0.0; 241 return 0.0;
235 } 242 }
236 243
237 G4StatMFChannel * G4StatMFMicroCanonical::Cho 244 G4StatMFChannel * G4StatMFMicroCanonical::ChooseAandZ(const G4Fragment & theFragment)
238 // Choice of fragment atomic numbers and cha 245 // Choice of fragment atomic numbers and charges
239 { 246 {
240 // We choose a multiplicity (1,2,3,...) and << 247 // We choose a multiplicity (1,2,3,...) and then a channel
241 G4double RandNumber = G4UniformRand(); << 248 G4double RandNumber = G4UniformRand();
242 249
243 if (RandNumber < _WCompoundNucleus) { << 250 if (RandNumber < _WCompoundNucleus) {
244 251
245 G4StatMFChannel * aChannel = new G4StatMFC << 252 G4StatMFChannel * aChannel = new G4StatMFChannel;
246 aChannel->CreateFragment(theFragment.GetA_ << 253 aChannel->CreateFragment(theFragment.GetA_asInt(),theFragment.GetZ_asInt());
247 return aChannel; << 254 return aChannel;
248 255
249 } else { << 256 } else {
250 257
251 G4double AccumWeight = _WCompoundNucleus; << 258 G4double AccumWeight = _WCompoundNucleus;
252 std::vector<G4StatMFMicroManager*>::iterat << 259 std::vector<G4StatMFMicroManager*>::iterator it;
253 for (it = _ThePartitionManagerVector.begin << 260 for (it = _ThePartitionManagerVector.begin(); it != _ThePartitionManagerVector.end(); ++it) {
254 AccumWeight += (*it)->GetProbability(); << 261 AccumWeight += (*it)->GetProbability();
255 if (RandNumber < AccumWeight) { << 262 if (RandNumber < AccumWeight) {
256 return (*it)->ChooseChannel(theFragment.GetA << 263 return (*it)->ChooseChannel(theFragment.GetA(),theFragment.GetZ(),__MeanTemperature);
257 } << 264 }
>> 265 }
>> 266 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMicroCanonical::ChooseAandZ: wrong normalization!");
258 } 267 }
259 throw G4HadronicException(__FILE__, __LINE <<
260 } <<
261 268
262 return 0; << 269 return 0;
263 } 270 }
264 271
265 G4double G4StatMFMicroCanonical::CalcInvLevelD 272 G4double G4StatMFMicroCanonical::CalcInvLevelDensity(G4int anA)
266 { 273 {
267 G4double res = 0.0; << 274 // Calculate Inverse Density Level
268 if (anA > 1) { << 275 // Epsilon0*(1 + 3 /(Af - 1))
269 res = G4StatMFParameters::GetEpsilon0()*(1 << 276 if (anA == 1) return 0.0;
270 } << 277 else return
271 return res; << 278 G4StatMFParameters::GetEpsilon0()*(1.0+3.0/(anA - 1.0));
272 } 279 }
273 280