[819] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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[962] | 27 | // $Id: G4StatMFMacroMultiNucleon.cc,v 1.7 2008/11/19 14:33:31 vnivanch Exp $ |
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[1228] | 28 | // GEANT4 tag $Name: geant4-09-03 $ |
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[819] | 29 | // |
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| 30 | // Hadronic Process: Nuclear De-excitations |
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| 31 | // by V. Lara |
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[962] | 32 | // |
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| 33 | // Modified: |
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| 34 | // 25.07.08 I.Pshenichnov (in collaboration with Alexander Botvina and Igor |
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| 35 | // Mishustin (FIAS, Frankfurt, INR, Moscow and Kurchatov Institute, |
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| 36 | // Moscow, pshenich@fias.uni-frankfurt.de) fixed computation of the |
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| 37 | // symmetry energy |
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[819] | 38 | |
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| 39 | #include "G4StatMFMacroMultiNucleon.hh" |
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| 40 | |
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| 41 | // Default constructor |
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| 42 | G4StatMFMacroMultiNucleon:: |
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| 43 | G4StatMFMacroMultiNucleon() : |
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| 44 | G4VStatMFMacroCluster(0) // Beacuse the def. constr. of base class is private |
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| 45 | { |
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| 46 | throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroMultiNucleon::default_constructor meant to not be accessable"); |
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| 47 | } |
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| 48 | |
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| 49 | // Copy constructor |
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| 50 | G4StatMFMacroMultiNucleon:: |
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| 51 | G4StatMFMacroMultiNucleon(const G4StatMFMacroMultiNucleon & ) : |
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| 52 | G4VStatMFMacroCluster(0) // Beacuse the def. constr. of base class is private |
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| 53 | { |
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| 54 | throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroMultiNucleon::copy_constructor meant to not be accessable"); |
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| 55 | } |
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| 56 | |
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| 57 | // Operators |
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| 58 | |
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| 59 | G4StatMFMacroMultiNucleon & G4StatMFMacroMultiNucleon:: |
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| 60 | operator=(const G4StatMFMacroMultiNucleon & ) |
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| 61 | { |
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| 62 | throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroMultiNucleon::operator= meant to not be accessable"); |
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| 63 | return *this; |
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| 64 | } |
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| 65 | |
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| 66 | |
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| 67 | G4bool G4StatMFMacroMultiNucleon::operator==(const G4StatMFMacroMultiNucleon & ) const |
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| 68 | { |
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| 69 | throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroMultiNucleon::operator== meant to not be accessable"); |
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| 70 | return false; |
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| 71 | } |
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| 72 | |
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| 73 | |
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| 74 | G4bool G4StatMFMacroMultiNucleon::operator!=(const G4StatMFMacroMultiNucleon & ) const |
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| 75 | { |
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| 76 | throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroMultiNucleon::operator!= meant to not be accessable"); |
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| 77 | return true; |
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| 78 | } |
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| 79 | |
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| 80 | |
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| 81 | |
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| 82 | G4double G4StatMFMacroMultiNucleon::CalcMeanMultiplicity(const G4double FreeVol, const G4double mu, |
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| 83 | const G4double nu, const G4double T) |
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| 84 | { |
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| 85 | const G4double ThermalWaveLenght = 16.15*fermi/std::sqrt(T); |
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| 86 | |
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| 87 | const G4double lambda3 = ThermalWaveLenght*ThermalWaveLenght*ThermalWaveLenght; |
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| 88 | |
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| 89 | const G4double A23 = std::pow(static_cast<G4double>(theA),2./3.); |
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| 90 | |
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| 91 | const G4double Coulomb = (3./5.)*(elm_coupling/G4StatMFParameters::Getr0())* |
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| 92 | (1.0 - 1.0/std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.)); |
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| 93 | |
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| 94 | G4double exponent = (mu + nu*theZARatio+ G4StatMFParameters::GetE0() + T*T/_InvLevelDensity |
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| 95 | - G4StatMFParameters::GetGamma0()*(1.0 - 2.0*theZARatio)* |
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| 96 | (1.0 - 2.0*theZARatio))*theA |
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| 97 | - G4StatMFParameters::Beta(T)*A23 - Coulomb*theZARatio*theZARatio*A23*theA; |
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| 98 | |
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| 99 | exponent /= T; |
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| 100 | |
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| 101 | if (exponent > 30.0) exponent = 30.0; |
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| 102 | |
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| 103 | _MeanMultiplicity = std::max((FreeVol * static_cast<G4double>(theA) * |
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| 104 | std::sqrt(static_cast<G4double>(theA))/lambda3) * |
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| 105 | std::exp(exponent),1.0e-30); |
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| 106 | return _MeanMultiplicity; |
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| 107 | } |
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| 108 | |
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| 109 | |
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| 110 | G4double G4StatMFMacroMultiNucleon::CalcZARatio(const G4double nu) |
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| 111 | { |
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| 112 | const G4double Coulomb = (3./5.)*(elm_coupling/G4StatMFParameters::Getr0())* |
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| 113 | (1.0 - 1.0/std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.)); |
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| 114 | |
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| 115 | G4double den = 8.0*G4StatMFParameters::GetGamma0()+2.0*Coulomb*std::pow(static_cast<G4double>(theA),2./3.); |
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| 116 | G4double num = 4.0*G4StatMFParameters::GetGamma0()+nu; |
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| 117 | |
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| 118 | return theZARatio = num/den; |
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| 119 | |
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| 120 | |
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| 121 | } |
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| 122 | |
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| 123 | |
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| 124 | |
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| 125 | G4double G4StatMFMacroMultiNucleon::CalcEnergy(const G4double T) |
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| 126 | { |
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| 127 | const G4double Coulomb = (3./5.)*(elm_coupling/G4StatMFParameters::Getr0())* |
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| 128 | (1.0 - 1.0/std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.)); |
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| 129 | |
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| 130 | const G4double A23 = std::pow(static_cast<G4double>(theA),2./3.); |
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| 131 | |
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| 132 | // Volume term |
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| 133 | G4double EVol = static_cast<G4double>(theA) * (T*T/_InvLevelDensity - G4StatMFParameters::GetE0()); |
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| 134 | |
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| 135 | // Symmetry term |
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[962] | 136 | G4double ESym = static_cast<G4double>(theA) * G4StatMFParameters::GetGamma0() *(1. - 2.* theZARatio) * (1. - 2.* theZARatio); |
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[819] | 137 | |
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| 138 | // Surface term |
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| 139 | G4double ESurf = A23*(G4StatMFParameters::Beta(T) - T*G4StatMFParameters::DBetaDT(T)); |
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| 140 | |
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| 141 | // Coulomb term |
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| 142 | G4double ECoul = Coulomb*A23*static_cast<G4double>(theA)*theZARatio*theZARatio; |
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| 143 | |
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| 144 | // Translational term |
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| 145 | G4double ETrans = (3./2.)*T; |
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| 146 | |
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[962] | 147 | |
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| 148 | return _Energy = EVol + ESurf + ECoul + ETrans + ESym; |
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[819] | 149 | } |
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| 150 | |
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| 151 | |
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| 152 | G4double G4StatMFMacroMultiNucleon::CalcEntropy(const G4double T, const G4double FreeVol) |
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| 153 | { |
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| 154 | const G4double ThermalWaveLenght = 16.15*fermi/std::sqrt(T); |
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| 155 | const G4double lambda3 = ThermalWaveLenght*ThermalWaveLenght*ThermalWaveLenght; |
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| 156 | |
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| 157 | G4double Entropy = 0.0; |
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| 158 | if (_MeanMultiplicity > 0.0) { |
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| 159 | // Volume term |
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| 160 | G4double SV = 2.0*static_cast<G4double>(theA)*T/_InvLevelDensity; |
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| 161 | |
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| 162 | // Surface term |
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| 163 | G4double SS = -G4StatMFParameters::DBetaDT(T)*std::pow(static_cast<G4double>(theA),2./3.); |
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| 164 | |
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| 165 | // Translational term |
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| 166 | G4double ST = (5./2.)+std::log(FreeVol * std::sqrt(static_cast<G4double>(theA)) * |
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| 167 | static_cast<G4double>(theA)/(lambda3*_MeanMultiplicity)); |
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| 168 | |
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| 169 | |
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| 170 | Entropy = _MeanMultiplicity*(SV + SS + ST); |
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| 171 | } |
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| 172 | |
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| 173 | |
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| 174 | return Entropy; |
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| 175 | } |
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