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25 // 25 //
26 // 26 //
>> 27 // $Id$
27 // 28 //
28 // Hadronic Process: Nuclear De-excitations 29 // Hadronic Process: Nuclear De-excitations
29 // by V. Lara 30 // by V. Lara
30 31
31 #include <numeric> 32 #include <numeric>
32 33
33 #include "G4StatMFMicroCanonical.hh" 34 #include "G4StatMFMicroCanonical.hh"
34 #include "G4PhysicalConstants.hh" 35 #include "G4PhysicalConstants.hh"
35 #include "G4SystemOfUnits.hh" 36 #include "G4SystemOfUnits.hh"
36 #include "G4HadronicException.hh" 37 #include "G4HadronicException.hh"
37 #include "G4Pow.hh" 38 #include "G4Pow.hh"
38 39
39 // constructor 40 // constructor
40 G4StatMFMicroCanonical::G4StatMFMicroCanonical 41 G4StatMFMicroCanonical::G4StatMFMicroCanonical(G4Fragment const & theFragment)
41 { 42 {
42 // Perform class initialization << 43 // Perform class initialization
43 Initialize(theFragment); << 44 Initialize(theFragment);
>> 45
44 } 46 }
45 47
>> 48
46 // destructor 49 // destructor
47 G4StatMFMicroCanonical::~G4StatMFMicroCanonica 50 G4StatMFMicroCanonical::~G4StatMFMicroCanonical()
48 { 51 {
49 // garbage collection 52 // garbage collection
50 if (!_ThePartitionManagerVector.empty()) { 53 if (!_ThePartitionManagerVector.empty()) {
51 std::for_each(_ThePartitionManagerVector.b 54 std::for_each(_ThePartitionManagerVector.begin(),
52 _ThePartitionManagerVector.end(), 55 _ThePartitionManagerVector.end(),
53 DeleteFragment()); 56 DeleteFragment());
54 } 57 }
55 } 58 }
56 59
>> 60
>> 61
>> 62 // Initialization method
>> 63
57 void G4StatMFMicroCanonical::Initialize(const 64 void G4StatMFMicroCanonical::Initialize(const G4Fragment & theFragment)
58 { 65 {
59 66
60 std::vector<G4StatMFMicroManager*>::iterator 67 std::vector<G4StatMFMicroManager*>::iterator it;
61 68
62 // Excitation Energy 69 // Excitation Energy
63 G4double U = theFragment.GetExcitationEnergy 70 G4double U = theFragment.GetExcitationEnergy();
64 71
65 G4int A = theFragment.GetA_asInt(); 72 G4int A = theFragment.GetA_asInt();
66 G4int Z = theFragment.GetZ_asInt(); 73 G4int Z = theFragment.GetZ_asInt();
67 G4double x = 1.0 - 2.0*Z/G4double(A); 74 G4double x = 1.0 - 2.0*Z/G4double(A);
68 G4Pow* g4calc = G4Pow::GetInstance(); << 75 G4Pow* g4pow = G4Pow::GetInstance();
69 76
70 // Configuration temperature 77 // Configuration temperature
71 G4double TConfiguration = std::sqrt(8.0*U/G4 78 G4double TConfiguration = std::sqrt(8.0*U/G4double(A));
72 79
73 // Free internal energy at Temperature T = 0 80 // Free internal energy at Temperature T = 0
74 __FreeInternalE0 = A*( 81 __FreeInternalE0 = A*(
75 // Volume term (for T = 0) 82 // Volume term (for T = 0)
76 -G4StatMFParameters::GetE0() + 83 -G4StatMFParameters::GetE0() +
77 // Symmetry term 84 // Symmetry term
78 G4StatMFParameters::GetGamma0()*x*x 85 G4StatMFParameters::GetGamma0()*x*x
79 ) + 86 ) +
80 // Surface term (for T = 0) 87 // Surface term (for T = 0)
81 G4StatMFParameters::GetBeta0()*g4calc->Z23 << 88 G4StatMFParameters::GetBeta0()*g4pow->Z23(A) +
82 // Coulomb term 89 // Coulomb term
83 elm_coupling*0.6*Z*Z/(G4StatMFParameters:: << 90 elm_coupling*(3.0/5.0)*Z*Z/(G4StatMFParameters::Getr0()*g4pow->Z13(A));
84 91
85 // Statistical weight 92 // Statistical weight
86 G4double W = 0.0; 93 G4double W = 0.0;
87 94
>> 95
88 // Mean breakup multiplicity 96 // Mean breakup multiplicity
89 __MeanMultiplicity = 0.0; 97 __MeanMultiplicity = 0.0;
90 98
91 // Mean channel temperature 99 // Mean channel temperature
92 __MeanTemperature = 0.0; 100 __MeanTemperature = 0.0;
93 101
94 // Mean channel entropy 102 // Mean channel entropy
95 __MeanEntropy = 0.0; 103 __MeanEntropy = 0.0;
96 104
97 // Calculate entropy of compound nucleus 105 // Calculate entropy of compound nucleus
98 G4double SCompoundNucleus = CalcEntropyOfCom 106 G4double SCompoundNucleus = CalcEntropyOfCompoundNucleus(theFragment,TConfiguration);
99 107
100 // Statistical weight of compound nucleus 108 // Statistical weight of compound nucleus
101 _WCompoundNucleus = 1.0; << 109 _WCompoundNucleus = 1.0; // std::exp(SCompoundNucleus - SCompoundNucleus);
102 110
103 W += _WCompoundNucleus; 111 W += _WCompoundNucleus;
104 << 112
>> 113
>> 114
105 // Maximal fragment multiplicity allowed in 115 // Maximal fragment multiplicity allowed in direct simulation
106 G4int MaxMult = G4StatMFMicroCanonical::MaxA 116 G4int MaxMult = G4StatMFMicroCanonical::MaxAllowedMultiplicity;
107 if (A > 110) MaxMult -= 1; 117 if (A > 110) MaxMult -= 1;
108 118
>> 119
>> 120
109 for (G4int im = 2; im <= MaxMult; im++) { 121 for (G4int im = 2; im <= MaxMult; im++) {
110 G4StatMFMicroManager * aMicroManager = 122 G4StatMFMicroManager * aMicroManager =
111 new G4StatMFMicroManager(theFragment,im, 123 new G4StatMFMicroManager(theFragment,im,__FreeInternalE0,SCompoundNucleus);
112 _ThePartitionManagerVector.push_back(aMicr 124 _ThePartitionManagerVector.push_back(aMicroManager);
113 } 125 }
114 126
115 // W is the total probability 127 // W is the total probability
116 W = std::accumulate(_ThePartitionManagerVect 128 W = std::accumulate(_ThePartitionManagerVector.begin(),
117 _ThePartitionManagerVector.end(), << 129 _ThePartitionManagerVector.end(),
118 W, [](const G4double& running_total, << 130 W,SumProbabilities());
119 G4StatMFMicroManag <<
120 { <<
121 return running_total + manager- <<
122 } ); <<
123 131
124 // Normalization of statistical weights 132 // Normalization of statistical weights
125 for (it = _ThePartitionManagerVector.begin( 133 for (it = _ThePartitionManagerVector.begin(); it != _ThePartitionManagerVector.end(); ++it)
126 { 134 {
127 (*it)->Normalize(W); 135 (*it)->Normalize(W);
128 } 136 }
129 137
130 _WCompoundNucleus /= W; 138 _WCompoundNucleus /= W;
131 139
132 __MeanMultiplicity += 1.0 * _WCompoundNucleu 140 __MeanMultiplicity += 1.0 * _WCompoundNucleus;
133 __MeanTemperature += TConfiguration * _WComp 141 __MeanTemperature += TConfiguration * _WCompoundNucleus;
134 __MeanEntropy += SCompoundNucleus * _WCompou 142 __MeanEntropy += SCompoundNucleus * _WCompoundNucleus;
135 143
>> 144
136 for (it = _ThePartitionManagerVector.begin( 145 for (it = _ThePartitionManagerVector.begin(); it != _ThePartitionManagerVector.end(); ++it)
137 { 146 {
138 __MeanMultiplicity += (*it)->GetMeanMult 147 __MeanMultiplicity += (*it)->GetMeanMultiplicity();
139 __MeanTemperature += (*it)->GetMeanTempe 148 __MeanTemperature += (*it)->GetMeanTemperature();
140 __MeanEntropy += (*it)->GetMeanEntropy() 149 __MeanEntropy += (*it)->GetMeanEntropy();
141 } 150 }
142 151
143 return; 152 return;
144 } 153 }
145 154
>> 155
146 G4double G4StatMFMicroCanonical::CalcFreeInter 156 G4double G4StatMFMicroCanonical::CalcFreeInternalEnergy(const G4Fragment & theFragment,
147 G4double T) 157 G4double T)
148 { 158 {
149 G4int A = theFragment.GetA_asInt(); 159 G4int A = theFragment.GetA_asInt();
150 G4int Z = theFragment.GetZ_asInt(); 160 G4int Z = theFragment.GetZ_asInt();
151 G4double A13 = G4Pow::GetInstance()->Z13(A); 161 G4double A13 = G4Pow::GetInstance()->Z13(A);
152 162
153 G4double InvLevelDensityPar = G4StatMFParame << 163 G4double InvLevelDensityPar = G4StatMFParameters::GetEpsilon0()*(1.0 + 3.0/G4double(A-1));
154 *(1.0 + 3.0/G4double(A-1)); <<
155 164
156 G4double VolumeTerm = (-G4StatMFParameters:: 165 G4double VolumeTerm = (-G4StatMFParameters::GetE0()+T*T/InvLevelDensityPar)*A;
157 166
158 G4double SymmetryTerm = G4StatMFParameters:: << 167 G4double SymmetryTerm = G4StatMFParameters::GetGamma0()*(A - 2*Z)*(A - 2*Z)/G4double(A);
159 *(A - 2*Z)*(A - 2*Z)/G4double(A); <<
160 168
161 G4double SurfaceTerm = (G4StatMFParameters:: << 169 G4double SurfaceTerm = (G4StatMFParameters::Beta(T)-T*G4StatMFParameters::DBetaDT(T))*A13*A13;
162 - T*G4StatMFParameters::DBetaDT(T))*A1 <<
163 170
164 G4double CoulombTerm = elm_coupling*0.6*Z*Z/ << 171 G4double CoulombTerm = elm_coupling*(3.0/5.0)*Z*Z/(G4StatMFParameters::Getr0()*A13);
165 172
166 return VolumeTerm + SymmetryTerm + SurfaceTe 173 return VolumeTerm + SymmetryTerm + SurfaceTerm + CoulombTerm;
167 } 174 }
168 175
169 G4double 176 G4double
170 G4StatMFMicroCanonical::CalcEntropyOfCompoundN 177 G4StatMFMicroCanonical::CalcEntropyOfCompoundNucleus(const G4Fragment & theFragment,
171 G4double & TConf) 178 G4double & TConf)
172 // Calculates Temperature and Entropy of com 179 // Calculates Temperature and Entropy of compound nucleus
173 { 180 {
174 G4int A = theFragment.GetA_asInt(); 181 G4int A = theFragment.GetA_asInt();
>> 182 // const G4double Z = theFragment.GetZ();
175 G4double U = theFragment.GetExcitationEnergy 183 G4double U = theFragment.GetExcitationEnergy();
176 G4double A13 = G4Pow::GetInstance()->Z13(A); 184 G4double A13 = G4Pow::GetInstance()->Z13(A);
177 185
178 G4double Ta = std::max(std::sqrt(U/(0.125*A) 186 G4double Ta = std::max(std::sqrt(U/(0.125*A)),0.0012*MeV);
179 G4double Tb = Ta; 187 G4double Tb = Ta;
180 188
181 G4double ECompoundNucleus = CalcFreeInternal 189 G4double ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Ta);
182 G4double Da = (U+__FreeInternalE0-ECompoundN 190 G4double Da = (U+__FreeInternalE0-ECompoundNucleus)/U;
183 G4double Db = 0.0; 191 G4double Db = 0.0;
184 192
185 G4double InvLevelDensity = CalcInvLevelDensi << 193 G4double InvLevelDensity = CalcInvLevelDensity(static_cast<G4int>(A));
186 194
187 // bracketing the solution 195 // bracketing the solution
188 if (Da == 0.0) { 196 if (Da == 0.0) {
189 TConf = Ta; 197 TConf = Ta;
190 return 2*Ta*A/InvLevelDensity - G4StatMFPa 198 return 2*Ta*A/InvLevelDensity - G4StatMFParameters::DBetaDT(Ta)*A13*A13;
191 } else if (Da < 0.0) { 199 } else if (Da < 0.0) {
192 do { 200 do {
193 Tb -= 0.5*Tb; 201 Tb -= 0.5*Tb;
194 ECompoundNucleus = CalcFreeInternalEnerg 202 ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Tb);
195 Db = (U+__FreeInternalE0-ECompoundNucleu 203 Db = (U+__FreeInternalE0-ECompoundNucleus)/U;
196 } while (Db < 0.0); 204 } while (Db < 0.0);
197 } else { 205 } else {
198 do { 206 do {
199 Tb += 0.5*Tb; 207 Tb += 0.5*Tb;
200 ECompoundNucleus = CalcFreeInternalEnerg 208 ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Tb);
201 Db = (U+__FreeInternalE0-ECompoundNucleu 209 Db = (U+__FreeInternalE0-ECompoundNucleus)/U;
202 } while (Db > 0.0); 210 } while (Db > 0.0);
203 } 211 }
204 212
205 G4double eps = 1.0e-14 * std::abs(Tb-Ta); << 213 G4double eps = 1.0e-14 * std::fabs(Tb-Ta);
206 214
207 for (G4int i = 0; i < 1000; i++) { 215 for (G4int i = 0; i < 1000; i++) {
208 G4double Tc = (Ta+Tb)*0.5; << 216 G4double Tc = (Ta+Tb)/2.0;
209 if (std::abs(Ta-Tb) <= eps) { 217 if (std::abs(Ta-Tb) <= eps) {
210 TConf = Tc; 218 TConf = Tc;
211 return 2*Tc*A/InvLevelDensity - G4StatMF 219 return 2*Tc*A/InvLevelDensity - G4StatMFParameters::DBetaDT(Tc)*A13*A13;
212 } 220 }
213 ECompoundNucleus = CalcFreeInternalEnergy( 221 ECompoundNucleus = CalcFreeInternalEnergy(theFragment,Tc);
214 G4double Dc = (U+__FreeInternalE0-ECompoun 222 G4double Dc = (U+__FreeInternalE0-ECompoundNucleus)/U;
215 223
216 if (Dc == 0.0) { 224 if (Dc == 0.0) {
217 TConf = Tc; 225 TConf = Tc;
218 return 2*Tc*A/InvLevelDensity - G4StatMF 226 return 2*Tc*A/InvLevelDensity - G4StatMFParameters::DBetaDT(Tc)*A13*A13;
219 } 227 }
220 228
221 if (Da*Dc < 0.0) { 229 if (Da*Dc < 0.0) {
222 Tb = Tc; 230 Tb = Tc;
223 Db = Dc; 231 Db = Dc;
224 } else { 232 } else {
225 Ta = Tc; 233 Ta = Tc;
226 Da = Dc; 234 Da = Dc;
227 } 235 }
228 } 236 }
229 237
230 G4cout << << 238 G4cerr <<
231 "G4StatMFMicrocanoncal::CalcEntropyOfCompo 239 "G4StatMFMicrocanoncal::CalcEntropyOfCompoundNucleus: I can't calculate the temperature"
232 << G4endl; 240 << G4endl;
233 241
234 return 0.0; 242 return 0.0;
235 } 243 }
236 244
237 G4StatMFChannel * G4StatMFMicroCanonical::Cho 245 G4StatMFChannel * G4StatMFMicroCanonical::ChooseAandZ(const G4Fragment & theFragment)
238 // Choice of fragment atomic numbers and cha 246 // Choice of fragment atomic numbers and charges
239 { 247 {
240 // We choose a multiplicity (1,2,3,...) and << 248 // We choose a multiplicity (1,2,3,...) and then a channel
241 G4double RandNumber = G4UniformRand(); << 249 G4double RandNumber = G4UniformRand();
242 250
243 if (RandNumber < _WCompoundNucleus) { << 251 if (RandNumber < _WCompoundNucleus) {
244 252
245 G4StatMFChannel * aChannel = new G4StatMFC << 253 G4StatMFChannel * aChannel = new G4StatMFChannel;
246 aChannel->CreateFragment(theFragment.GetA_ << 254 aChannel->CreateFragment(theFragment.GetA_asInt(),theFragment.GetZ_asInt());
247 return aChannel; << 255 return aChannel;
248 256
249 } else { << 257 } else {
250 258
251 G4double AccumWeight = _WCompoundNucleus; << 259 G4double AccumWeight = _WCompoundNucleus;
252 std::vector<G4StatMFMicroManager*>::iterat << 260 std::vector<G4StatMFMicroManager*>::iterator it;
253 for (it = _ThePartitionManagerVector.begin << 261 for (it = _ThePartitionManagerVector.begin(); it != _ThePartitionManagerVector.end(); ++it) {
254 AccumWeight += (*it)->GetProbability(); << 262 AccumWeight += (*it)->GetProbability();
255 if (RandNumber < AccumWeight) { << 263 if (RandNumber < AccumWeight) {
256 return (*it)->ChooseChannel(theFragment.GetA << 264 return (*it)->ChooseChannel(theFragment.GetA(),theFragment.GetZ(),__MeanTemperature);
257 } << 265 }
>> 266 }
>> 267 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMicroCanonical::ChooseAandZ: wrong normalization!");
258 } 268 }
259 throw G4HadronicException(__FILE__, __LINE <<
260 } <<
261 269
262 return 0; << 270 return 0;
263 } 271 }
264 272
265 G4double G4StatMFMicroCanonical::CalcInvLevelD 273 G4double G4StatMFMicroCanonical::CalcInvLevelDensity(G4int anA)
266 { 274 {
267 G4double res = 0.0; << 275 // Calculate Inverse Density Level
268 if (anA > 1) { << 276 // Epsilon0*(1 + 3 /(Af - 1))
269 res = G4StatMFParameters::GetEpsilon0()*(1 << 277 if (anA == 1) return 0.0;
270 } << 278 else return
271 return res; << 279 G4StatMFParameters::GetEpsilon0()*(1.0+3.0/(anA - 1.0));
272 } 280 }
273 281