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26 // 26 //
>> 27 // $Id: G4StatMFMacroTemperature.cc,v 1.9 2010-10-29 17:35:04 vnivanch Exp $
>> 28 // GEANT4 tag $Name: geant4-09-04-patch-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 // Modified: 33 // Modified:
32 // 25.07.08 I.Pshenichnov (in collaboration wi 34 // 25.07.08 I.Pshenichnov (in collaboration with Alexander Botvina and Igor
33 // Mishustin (FIAS, Frankfurt, INR, M 35 // Mishustin (FIAS, Frankfurt, INR, Moscow and Kurchatov Institute,
34 // Moscow, pshenich@fias.uni-frankfur 36 // Moscow, pshenich@fias.uni-frankfurt.de) make algorithm closer to
35 // original MF model 37 // original MF model
36 // 16.04.10 V.Ivanchenko improved logic of sol << 38 // 16.04.10 V.Ivanchenko improved logic of solving equation for tempetature
37 // to protect code from rare unwanted 39 // to protect code from rare unwanted exception; moved constructor
38 // and destructor to source 40 // and destructor to source
39 // 28.10.10 V.Ivanchenko defined members in co 41 // 28.10.10 V.Ivanchenko defined members in constructor and cleaned up
40 42
41 #include "G4StatMFMacroTemperature.hh" 43 #include "G4StatMFMacroTemperature.hh"
42 #include "G4PhysicalConstants.hh" <<
43 #include "G4SystemOfUnits.hh" <<
44 #include "G4Pow.hh" <<
45 44
46 G4StatMFMacroTemperature::G4StatMFMacroTempera 45 G4StatMFMacroTemperature::G4StatMFMacroTemperature(const G4double anA, const G4double aZ,
47 const G4double ExEnergy, const G4double Free 46 const G4double ExEnergy, const G4double FreeE0, const G4double kappa,
48 std::vector<G4VStatMFMacroCluster*> * Cluste 47 std::vector<G4VStatMFMacroCluster*> * ClusterVector) :
49 theA(anA), 48 theA(anA),
50 theZ(aZ), 49 theZ(aZ),
51 _ExEnergy(ExEnergy), 50 _ExEnergy(ExEnergy),
52 _FreeInternalE0(FreeE0), 51 _FreeInternalE0(FreeE0),
53 _Kappa(kappa), 52 _Kappa(kappa),
54 _MeanMultiplicity(0.0), 53 _MeanMultiplicity(0.0),
55 _MeanTemperature(0.0), 54 _MeanTemperature(0.0),
56 _ChemPotentialMu(0.0), 55 _ChemPotentialMu(0.0),
57 _ChemPotentialNu(0.0), 56 _ChemPotentialNu(0.0),
58 _MeanEntropy(0.0), 57 _MeanEntropy(0.0),
59 _theClusters(ClusterVector) 58 _theClusters(ClusterVector)
60 {} 59 {}
61 60
62 G4StatMFMacroTemperature::~G4StatMFMacroTemper 61 G4StatMFMacroTemperature::~G4StatMFMacroTemperature()
63 {} 62 {}
64 63
>> 64
65 G4double G4StatMFMacroTemperature::CalcTempera 65 G4double G4StatMFMacroTemperature::CalcTemperature(void)
66 { 66 {
67 // Inital guess for the interval of the ense << 67 // Inital guess for the interval of the ensemble temperature values
68 G4double Ta = 0.5; << 68 G4double Ta = 0.5;
69 G4double Tb = std::max(std::sqrt(_ExEnergy/( << 69 G4double Tb = std::max(std::sqrt(_ExEnergy/(theA*0.12)),0.01*MeV);
70 70
71 G4double fTa = this->operator()(Ta); << 71 G4double fTa = this->operator()(Ta);
72 G4double fTb = this->operator()(Tb); << 72 G4double fTb = this->operator()(Tb);
73 73
74 // Bracketing the solution << 74 // Bracketing the solution
75 // T should be greater than 0. << 75 // T should be greater than 0.
76 // The interval is [Ta,Tb] << 76 // The interval is [Ta,Tb]
77 // We start with a value for Ta = 0.5 MeV << 77 // We start with a value for Ta = 0.5 MeV
78 // it should be enough to have fTa > 0 If it << 78 // it should be enough to have fTa > 0 If it isn't
79 // the case, we decrease Ta. But carefully, << 79 // the case, we decrease Ta. But carefully, because
80 // fTa growes very fast when Ta is near 0 an << 80 // fTa growes very fast when Ta is near 0 and we could have
81 // an overflow. << 81 // an overflow.
82 << 82
83 G4int iterations = 0; << 83 G4int iterations = 0;
84 // Loop checking, 05-Aug-2015, Vladimir Ivan << 84 while (fTa < 0.0 && ++iterations < 10) {
85 while (fTa < 0.0 && ++iterations < 10) { << 85 Ta -= 0.5*Ta;
86 Ta -= 0.5*Ta; << 86 fTa = this->operator()(Ta);
87 fTa = this->operator()(Ta); << 87 }
88 } << 88 // Usually, fTb will be less than 0, but if it is not the case:
89 // Usually, fTb will be less than 0, but if << 89 iterations = 0;
90 iterations = 0; << 90 while (fTa*fTb > 0.0 && iterations++ < 10) {
91 // Loop checking, 05-Aug-2015, Vladimir Ivan << 91 Tb += 2.*std::fabs(Tb-Ta);
92 while (fTa*fTb > 0.0 && iterations++ < 10) { << 92 fTb = this->operator()(Tb);
93 Tb += 2.*std::fabs(Tb-Ta); << 93 }
94 fTb = this->operator()(Tb); <<
95 } <<
96 94
97 if (fTa*fTb > 0.0) { << 95 if (fTa*fTb > 0.0) {
98 G4cerr <<"G4StatMFMacroTemperature:"<<" Ta << 96 G4cerr <<"G4StatMFMacroTemperature:"<<" Ta="<<Ta<<" Tb="<<Tb<< G4endl;
99 G4cerr <<"G4StatMFMacroTemperature:"<<" fT << 97 G4cerr <<"G4StatMFMacroTemperature:"<<" fTa="<<fTa<<" fTb="<<fTb<< G4endl;
100 throw G4HadronicException(__FILE__, __LINE << 98 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroTemperature::CalcTemperature: I couldn't bracket the solution.");
101 } << 99 }
102 <<
103 G4Solver<G4StatMFMacroTemperature> * theSolv <<
104 new G4Solver<G4StatMFMacroTemperature>(100 <<
105 theSolver->SetIntervalLimits(Ta,Tb); <<
106 if (!theSolver->Crenshaw(*this)){ <<
107 G4cout <<"G4StatMFMacroTemperature, Crensh <<
108 <<Ta<<" Tb="<<Tb<< G4endl; <<
109 G4cout <<"G4StatMFMacroTemperature, Crensh <<
110 <<fTa<<" fTb="<<fTb<< G4endl; <<
111 } <<
112 _MeanTemperature = theSolver->GetRoot(); <<
113 G4double FunctionValureAtRoot = this->opera <<
114 delete theSolver; <<
115 <<
116 // Verify if the root is found and it is ind <<
117 // say, between 1 and 50 MeV, otherwise try <<
118 if (std::fabs(FunctionValureAtRoot) > 5.e-2) <<
119 if (_MeanTemperature < 1. || _MeanTemperat <<
120 G4cout << "Crenshaw method failed; funct <<
121 << " solution? = " << _MeanTemperature <<
122 G4Solver<G4StatMFMacroTemperature> * the <<
123 new G4Solver<G4StatMFMacroTemperature>(200,1 <<
124 theSolverBrent->SetIntervalLimits(Ta,Tb) <<
125 if (!theSolverBrent->Brent(*this)){ <<
126 G4cout <<"G4StatMFMacroTemperature, Brent me <<
127 <<" Ta="<<Ta<<" Tb="<<Tb<< G4endl; <<
128 G4cout <<"G4StatMFMacroTemperature, Brent me <<
129 <<" fTa="<<fTa<<" fTb="<<fTb<< G4endl <<
130 throw G4HadronicException(__FILE__, __LINE__ <<
131 } <<
132 100
133 _MeanTemperature = theSolverBrent->GetRo << 101 G4Solver<G4StatMFMacroTemperature> * theSolver = new G4Solver<G4StatMFMacroTemperature>(100,1.e-4);
134 FunctionValureAtRoot = this->operator() << 102 theSolver->SetIntervalLimits(Ta,Tb);
135 delete theSolverBrent; << 103 if (!theSolver->Crenshaw(*this)){
>> 104 G4cout <<"G4StatMFMacroTemperature, Crenshaw method failed:"<<" Ta="<<Ta<<" Tb="<<Tb<< G4endl;
>> 105 G4cout <<"G4StatMFMacroTemperature, Crenshaw method failed:"<<" fTa="<<fTa<<" fTb="<<fTb<< G4endl;
136 } 106 }
137 if (std::abs(FunctionValureAtRoot) > 5.e-2 << 107 _MeanTemperature = theSolver->GetRoot();
138 G4cout << "Brent method failed; function << 108 G4double FunctionValureAtRoot = this->operator()(_MeanTemperature);
139 << " solution? = " << _MeanTemperature << 109 delete theSolver;
140 throw G4HadronicException(__FILE__, __LI << 110
>> 111 // Verify if the root is found and it is indeed within the physical domain,
>> 112 // say, between 1 and 50 MeV, otherwise try Brent method:
>> 113 if (std::fabs(FunctionValureAtRoot) > 5.e-2) {
>> 114 if (_MeanTemperature < 1. || _MeanTemperature > 50.) {
>> 115 G4cout << "Crenshaw method failed; function = " << FunctionValureAtRoot
>> 116 << " solution? = " << _MeanTemperature << " MeV " << G4endl;
>> 117 G4Solver<G4StatMFMacroTemperature> * theSolverBrent = new G4Solver<G4StatMFMacroTemperature>(200,1.e-3);
>> 118 theSolverBrent->SetIntervalLimits(Ta,Tb);
>> 119 if (!theSolverBrent->Brent(*this)){
>> 120 G4cout <<"G4StatMFMacroTemperature, Brent method failed:"<<" Ta="<<Ta<<" Tb="<<Tb<< G4endl;
>> 121 G4cout <<"G4StatMFMacroTemperature, Brent method failed:"<<" fTa="<<fTa<<" fTb="<<fTb<< G4endl;
>> 122 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroTemperature::CalcTemperature: I couldn't find the root with any method.");
>> 123 }
>> 124
>> 125 _MeanTemperature = theSolverBrent->GetRoot();
>> 126 FunctionValureAtRoot = this->operator()(_MeanTemperature);
>> 127 delete theSolverBrent;
>> 128 }
>> 129 if (std::abs(FunctionValureAtRoot) > 5.e-2) {
>> 130 //if (_MeanTemperature < 1. || _MeanTemperature > 50. || std::abs(FunctionValureAtRoot) > 5.e-2) {
>> 131 G4cout << "Brent method failed; function = " << FunctionValureAtRoot << " solution? = " << _MeanTemperature << " MeV " << G4endl;
>> 132 throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroTemperature::CalcTemperature: I couldn't find the root with any method.");
>> 133 }
141 } 134 }
142 } << 135 //G4cout << "G4StatMFMacroTemperature::CalcTemperature: function = " << FunctionValureAtRoot
143 //G4cout << "G4StatMFMacroTemperature::CalcT << 136 // << " T(MeV)= " << _MeanTemperature << G4endl;
144 //<< FunctionValureAtRoot << 137 return _MeanTemperature;
145 // << " T(MeV)= " << _MeanTemperature << <<
146 return _MeanTemperature; <<
147 } 138 }
148 139
>> 140
>> 141
149 G4double G4StatMFMacroTemperature::FragsExcitE 142 G4double G4StatMFMacroTemperature::FragsExcitEnergy(const G4double T)
150 // Calculates excitation energy per nucleon an << 143 // Calculates excitation energy per nucleon and summed fragment multiplicity and entropy
151 // multiplicity and entropy <<
152 { 144 {
153 // Model Parameters << 145
154 G4Pow* g4calc = G4Pow::GetInstance(); << 146 // Model Parameters
155 G4double R0 = G4StatMFParameters::Getr0()*g4 << 147 G4double R0 = G4StatMFParameters::Getr0()*std::pow(theA,1./3.);
156 G4double R = R0*g4calc->A13(1.0+G4StatMFPara << 148 G4double R = R0*std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(), 1./3.);
157 G4double FreeVol = _Kappa*(4.*pi/3.)*R0*R0*R << 149 G4double FreeVol = _Kappa*(4.*pi/3.)*R0*R0*R0;
158 150
159 // Calculate Chemical potentials << 151
160 CalcChemicalPotentialNu(T); << 152 // Calculate Chemical potentials
>> 153 CalcChemicalPotentialNu(T);
161 154
162 155
163 // Average total fragment energy << 156 // Average total fragment energy
164 G4double AverageEnergy = 0.0; << 157 G4double AverageEnergy = 0.0;
165 std::vector<G4VStatMFMacroCluster*>::iterato << 158 std::vector<G4VStatMFMacroCluster*>::iterator i;
166 for (i = _theClusters->begin(); i != _theCl << 159 for (i = _theClusters->begin(); i != _theClusters->end(); ++i)
167 { << 160 {
168 AverageEnergy += (*i)->GetMeanMultiplici << 161 AverageEnergy += (*i)->GetMeanMultiplicity() * (*i)->CalcEnergy(T);
169 } << 162 }
170 163
171 // Add Coulomb energy << 164 // Add Coulomb energy
172 AverageEnergy += 0.6*elm_coupling*theZ*theZ/ << 165 AverageEnergy += (3./5.)*elm_coupling*theZ*theZ/R;
173 166
174 // Calculate mean entropy << 167 // Calculate mean entropy
175 _MeanEntropy = 0.0; << 168 _MeanEntropy = 0.0;
176 for (i = _theClusters->begin(); i != _theClu << 169 for (i = _theClusters->begin(); i != _theClusters->end(); ++i)
177 { << 170 {
178 _MeanEntropy += (*i)->CalcEntropy(T,Free << 171 _MeanEntropy += (*i)->CalcEntropy(T,FreeVol);
179 } << 172 }
>> 173
>> 174 // Excitation energy per nucleon
>> 175 G4double FragsExcitEnergy = AverageEnergy - _FreeInternalE0;
>> 176
>> 177 return FragsExcitEnergy;
180 178
181 // Excitation energy per nucleon <<
182 return AverageEnergy - _FreeInternalE0; <<
183 } 179 }
184 180
>> 181
185 void G4StatMFMacroTemperature::CalcChemicalPot 182 void G4StatMFMacroTemperature::CalcChemicalPotentialNu(const G4double T)
186 // Calculates the chemical potential \nu << 183 // Calculates the chemical potential \nu
>> 184
187 { 185 {
188 G4StatMFMacroChemicalPotential * theChemPot << 186 G4StatMFMacroChemicalPotential * theChemPot = new
189 G4StatMFMacroChemicalPotential(theA,theZ,_ << 187 G4StatMFMacroChemicalPotential(theA,theZ,_Kappa,T,_theClusters);
190 188
191 _ChemPotentialNu = theChemPot->CalcChemicalP << 189
192 _ChemPotentialMu = theChemPot->GetChemicalPo << 190 _ChemPotentialNu = theChemPot->CalcChemicalPotentialNu();
193 _MeanMultiplicity = theChemPot->GetMeanMulti << 191 _ChemPotentialMu = theChemPot->GetChemicalPotentialMu();
194 delete theChemPot; << 192 _MeanMultiplicity = theChemPot->GetMeanMultiplicity();
>> 193
>> 194 delete theChemPot;
195 195
196 return; << 196 return;
>> 197
197 } 198 }
198 199
199 200
200 201