Geant4_10
G4StatMFMacroBiNucleon.cc
Go to the documentation of this file.
1 //
2 // ********************************************************************
3 // * License and Disclaimer *
4 // * *
5 // * The Geant4 software is copyright of the Copyright Holders of *
6 // * the Geant4 Collaboration. It is provided under the terms and *
7 // * conditions of the Geant4 Software License, included in the file *
8 // * LICENSE and available at http://cern.ch/geant4/license . These *
9 // * include a list of copyright holders. *
10 // * *
11 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing financial support for this *
13 // * work make any representation or warranty, express or implied, *
14 // * regarding this software system or assume any liability for its *
15 // * use. Please see the license in the file LICENSE and URL above *
16 // * for the full disclaimer and the limitation of liability. *
17 // * *
18 // * This code implementation is the result of the scientific and *
19 // * technical work of the GEANT4 collaboration. *
20 // * By using, copying, modifying or distributing the software (or *
21 // * any work based on the software) you agree to acknowledge its *
22 // * use in resulting scientific publications, and indicate your *
23 // * acceptance of all terms of the Geant4 Software license. *
24 // ********************************************************************
25 //
26 //
27 // $Id: G4StatMFMacroBiNucleon.cc 67983 2013-03-13 10:42:03Z gcosmo $
28 //
29 // Hadronic Process: Nuclear De-excitations
30 // by V. Lara
31 
33 #include "G4PhysicalConstants.hh"
34 #include "G4SystemOfUnits.hh"
35 
36 // Operators
37 
38 G4StatMFMacroBiNucleon & G4StatMFMacroBiNucleon::
39 operator=(const G4StatMFMacroBiNucleon & )
40 {
41  throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroBiNucleon::operator= meant to not be accessable");
42  return *this;
43 }
44 
45 
46 G4bool G4StatMFMacroBiNucleon::operator==(const G4StatMFMacroBiNucleon & ) const
47 {
48  throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroBiNucleon::operator== meant to not be accessable");
49  return false;
50 }
51 
52 
53 G4bool G4StatMFMacroBiNucleon::operator!=(const G4StatMFMacroBiNucleon & ) const
54 {
55  throw G4HadronicException(__FILE__, __LINE__, "G4StatMFMacroBiNucleon::operator!= meant to not be accessable");
56  return true;
57 }
58 
59 
61  const G4double nu, const G4double T)
62 {
63  const G4double ThermalWaveLenght = 16.15*fermi/std::sqrt(T);
64 
65  const G4double lambda3 = ThermalWaveLenght*ThermalWaveLenght*ThermalWaveLenght;
66 
67  const G4double degeneracy = 3.0;
68 
69  const G4double Coulomb = (3./5.)*(elm_coupling/G4StatMFParameters::Getr0())*
70  (1.0 - 1.0/std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.));
71 
72  const G4double BindingE = G4NucleiProperties::GetBindingEnergy(theA,1); //old value was 2.796*MeV
73  G4double exponent = (BindingE + theA*(mu+nu*theZARatio) -
74  Coulomb*theZARatio*theZARatio*std::pow(G4double(theA),5./3.))/T;
75 
76  // To avoid numerical problems
77  if (exponent < -700.0) exponent = -700.0;
78  else if (exponent > 700.0) exponent = 700.0;
79 
80  _MeanMultiplicity = (degeneracy*FreeVol*static_cast<G4double>(theA)*std::sqrt(static_cast<G4double>(theA))/lambda3)*
81  std::exp(exponent);
82 
83  return _MeanMultiplicity;
84 }
85 
86 
88 {
89  const G4double Coulomb = (3./5.)*(elm_coupling/G4StatMFParameters::Getr0())*
90  (1.0 - 1.0/std::pow(1.0+G4StatMFParameters::GetKappaCoulomb(),1./3.));
91 
93  Coulomb * theZARatio * theZARatio * std::pow(G4double(theA),5./3.) +
94  (3./2.) * T;
95 
96  return _Energy;
97 }
98 
99 
100 
102 {
103  const G4double ThermalWaveLenght = 16.15*fermi/std::sqrt(T);
104  const G4double lambda3 = ThermalWaveLenght*ThermalWaveLenght*ThermalWaveLenght;
105 
106  G4double Entropy = 0.0;
107  if (_MeanMultiplicity > 0.0)
108  // Is this formula correct?
109  Entropy = _MeanMultiplicity*(5./2.+
110  std::log(3.0*static_cast<G4double>(theA)*
111  std::sqrt(static_cast<G4double>(theA))*FreeVol/
112  (lambda3*_MeanMultiplicity)));
113 
114 
115  return Entropy;
116 }
static G4double GetKappaCoulomb()
G4double CalcMeanMultiplicity(const G4double FreeVol, const G4double mu, const G4double nu, const G4double T)
tuple elm_coupling
Definition: hepunit.py:286
static G4double Getr0()
bool G4bool
Definition: G4Types.hh:79
static G4double GetBindingEnergy(const G4int A, const G4int Z)
G4double CalcEntropy(const G4double T, const G4double FreeVol)
double G4double
Definition: G4Types.hh:76
G4double CalcEnergy(const G4double T)