[819] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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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: G4StatMFMacroBiNucleon.cc,v 1.7 2008/10/24 22:56:42 dennis 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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| 32 | |
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| 33 | #include "G4StatMFMacroBiNucleon.hh" |
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| 34 | |
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| 35 | // Operators |
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| 36 | |
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| 37 | G4StatMFMacroBiNucleon & G4StatMFMacroBiNucleon:: |
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| 38 | operator=(const G4StatMFMacroBiNucleon & ) |
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| 39 | { |
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| 40 | throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroBiNucleon::operator= meant to not be accessable"); |
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| 41 | return *this; |
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| 42 | } |
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| 43 | |
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| 44 | |
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| 45 | G4bool G4StatMFMacroBiNucleon::operator==(const G4StatMFMacroBiNucleon & ) const |
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| 46 | { |
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| 47 | throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroBiNucleon::operator== meant to not be accessable"); |
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| 48 | return false; |
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| 49 | } |
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| 50 | |
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| 51 | |
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| 52 | G4bool G4StatMFMacroBiNucleon::operator!=(const G4StatMFMacroBiNucleon & ) const |
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| 53 | { |
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| 54 | throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroBiNucleon::operator!= meant to not be accessable"); |
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| 55 | return true; |
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| 56 | } |
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| 57 | |
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| 58 | |
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| 59 | G4double G4StatMFMacroBiNucleon::CalcMeanMultiplicity(const G4double FreeVol, const G4double mu, |
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| 60 | const G4double nu, const G4double T) |
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| 61 | { |
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| 62 | const G4double ThermalWaveLenght = 16.15*fermi/std::sqrt(T); |
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| 63 | |
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| 64 | const G4double lambda3 = ThermalWaveLenght*ThermalWaveLenght*ThermalWaveLenght; |
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| 65 | |
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| 66 | const G4double degeneracy = 3.0; |
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| 67 | |
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| 68 | const G4double Coulomb = (3./5.)*(elm_coupling/G4StatMFParameters::Getr0())* |
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| 69 | (1.0 - 1.0/std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.)); |
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| 70 | |
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[962] | 71 | const G4double BindingE = G4NucleiProperties::GetBindingEnergy(theA,1); //old value was 2.796*MeV |
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[819] | 72 | G4double exponent = (BindingE + theA*(mu+nu*theZARatio) - |
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| 73 | Coulomb*theZARatio*theZARatio*std::pow(G4double(theA),5./3.))/T; |
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| 74 | |
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| 75 | // To avoid numerical problems |
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| 76 | if (exponent < -700.0) exponent = -700.0; |
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| 77 | else if (exponent > 700.0) exponent = 700.0; |
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| 78 | |
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| 79 | _MeanMultiplicity = (degeneracy*FreeVol*static_cast<G4double>(theA)*std::sqrt(static_cast<G4double>(theA))/lambda3)* |
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| 80 | std::exp(exponent); |
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| 81 | |
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| 82 | return _MeanMultiplicity; |
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| 83 | } |
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| 84 | |
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| 85 | |
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| 86 | G4double G4StatMFMacroBiNucleon::CalcEnergy(const G4double T) |
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| 87 | { |
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| 88 | const G4double Coulomb = (3./5.)*(elm_coupling/G4StatMFParameters::Getr0())* |
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| 89 | (1.0 - 1.0/std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.)); |
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| 90 | |
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[962] | 91 | _Energy = -G4NucleiProperties::GetBindingEnergy(theA,1) + |
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[819] | 92 | Coulomb * theZARatio * theZARatio * std::pow(G4double(theA),5./3.) + |
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| 93 | (3./2.) * T; |
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| 94 | |
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| 95 | return _Energy; |
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| 96 | } |
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| 97 | |
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| 98 | |
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| 99 | |
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| 100 | G4double G4StatMFMacroBiNucleon::CalcEntropy(const G4double T, const G4double FreeVol) |
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| 101 | { |
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| 102 | const G4double ThermalWaveLenght = 16.15*fermi/std::sqrt(T); |
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| 103 | const G4double lambda3 = ThermalWaveLenght*ThermalWaveLenght*ThermalWaveLenght; |
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| 104 | |
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| 105 | G4double Entropy = 0.0; |
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| 106 | if (_MeanMultiplicity > 0.0) |
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| 107 | // Is this formula correct? |
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| 108 | Entropy = _MeanMultiplicity*(5./2.+ |
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| 109 | std::log(3.0*static_cast<G4double>(theA)* |
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| 110 | std::sqrt(static_cast<G4double>(theA))*FreeVol/ |
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| 111 | (lambda3*_MeanMultiplicity))); |
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| 112 | |
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| 113 | |
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| 114 | return Entropy; |
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| 115 | } |
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