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G4StatMFMacroBiNucleon.cc
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27 // $Id$
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 }