Gabriele Cosmo
117 lines
4.4 KiB
C++
117 lines
4.4 KiB
C++
//
|
|
// ********************************************************************
|
|
// * DISCLAIMER *
|
|
// * *
|
|
// * The following disclaimer summarizes all the specific disclaimers *
|
|
// * of contributors to this software. The specific disclaimers,which *
|
|
// * govern, are listed with their locations in: *
|
|
// * http://cern.ch/geant4/license *
|
|
// * *
|
|
// * Neither the authors of this software system, nor their employing *
|
|
// * institutes,nor the agencies providing financial support for this *
|
|
// * work make any representation or warranty, express or implied, *
|
|
// * regarding this software system or assume any liability for its *
|
|
// * use. *
|
|
// * *
|
|
// * This code implementation is the intellectual property of the *
|
|
// * GEANT4 collaboration. *
|
|
// * By copying, distributing or modifying the Program (or any work *
|
|
// * based on the Program) you indicate your acceptance of this *
|
|
// * statement, and all its terms. *
|
|
// ********************************************************************
|
|
//
|
|
//
|
|
// $Id: G4StatMFMacroNucleon.cc,v 1.4 2005/06/04 13:27:49 jwellisc Exp $
|
|
// GEANT4 tag $Name: geant4-07-01 $
|
|
//
|
|
// Hadronic Process: Nuclear De-excitations
|
|
// by V. Lara
|
|
|
|
#include "G4StatMFMacroNucleon.hh"
|
|
|
|
// Operators
|
|
|
|
G4StatMFMacroNucleon & G4StatMFMacroNucleon::
|
|
operator=(const G4StatMFMacroNucleon & )
|
|
{
|
|
throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroNucleon::operator= meant to not be accessable");
|
|
return *this;
|
|
}
|
|
|
|
|
|
G4bool G4StatMFMacroNucleon::operator==(const G4StatMFMacroNucleon & ) const
|
|
{
|
|
throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroNucleon::operator== meant to not be accessable");
|
|
return false;
|
|
}
|
|
|
|
|
|
G4bool G4StatMFMacroNucleon::operator!=(const G4StatMFMacroNucleon & ) const
|
|
{
|
|
throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroNucleon::operator!= meant to not be accessable");
|
|
return true;
|
|
}
|
|
|
|
G4double G4StatMFMacroNucleon::CalcMeanMultiplicity(const G4double FreeVol, const G4double mu,
|
|
const G4double nu, const G4double T)
|
|
{
|
|
if (T <= 0.0) throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroNucleon::CalcMeanMultiplicity: Temperature less or equal 0");
|
|
const G4double ThermalWaveLenght = 16.15*fermi/std::sqrt(T);
|
|
|
|
const G4double lambda3 = ThermalWaveLenght*ThermalWaveLenght*ThermalWaveLenght;
|
|
|
|
const G4double degeneracy = 2.0;
|
|
|
|
const G4double Coulomb = (3./5.)*(elm_coupling/G4StatMFParameters::Getr0())*
|
|
(1.0 - 1.0/std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.));
|
|
|
|
G4double exponent_proton = (mu+nu-Coulomb)/T;
|
|
G4double exponent_neutron = mu/T;
|
|
|
|
if (exponent_neutron > 700.0) exponent_proton = 700.0;
|
|
if (exponent_proton > 700.0) exponent_proton = 700.0;
|
|
|
|
_NeutronMeanMultiplicity = (degeneracy*FreeVol/lambda3)*std::exp(mu/T);
|
|
|
|
_ProtonMeanMultiplicity = (degeneracy*FreeVol/lambda3)*
|
|
std::exp((mu+nu-Coulomb)/T);
|
|
|
|
|
|
|
|
return _MeanMultiplicity = _NeutronMeanMultiplicity + _ProtonMeanMultiplicity;
|
|
|
|
}
|
|
|
|
|
|
G4double G4StatMFMacroNucleon::CalcEnergy(const G4double T)
|
|
{
|
|
const G4double Coulomb = (3./5.)*(elm_coupling/G4StatMFParameters::Getr0())*
|
|
(1.0 - 1.0/std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.));
|
|
|
|
return _Energy = Coulomb * theZARatio + (3./2.) * T;
|
|
|
|
}
|
|
|
|
G4double G4StatMFMacroNucleon::CalcEntropy(const G4double T, const G4double FreeVol)
|
|
{
|
|
const G4double ThermalWaveLenght = 16.15*fermi/std::sqrt(T);
|
|
const G4double lambda3 = ThermalWaveLenght*ThermalWaveLenght*ThermalWaveLenght;
|
|
|
|
G4double NeutronEntropy = 0.0;
|
|
if (_NeutronMeanMultiplicity > 0.0)
|
|
NeutronEntropy = _NeutronMeanMultiplicity*(5./2.+
|
|
std::log(2.0*static_cast<G4double>(theA)*FreeVol/
|
|
(lambda3*_NeutronMeanMultiplicity)));
|
|
|
|
|
|
G4double ProtonEntropy = 0.0;
|
|
if (_ProtonMeanMultiplicity > 0.0)
|
|
ProtonEntropy = _ProtonMeanMultiplicity*(5./2.+
|
|
std::log(2.0*static_cast<G4double>(theA)*FreeVol/
|
|
(lambda3*_ProtonMeanMultiplicity)));
|
|
|
|
|
|
return NeutronEntropy+ProtonEntropy;
|
|
}
|
|
|