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