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G4StatMFMacroTriNucleon.cc
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27 // $Id: G4StatMFMacroTriNucleon.cc 91834 2015-08-07 07:24:22Z gcosmo $
28 //
29 // Hadronic Process: Nuclear De-excitations
30 // by V. Lara
31 
33 #include "G4PhysicalConstants.hh"
34 #include "G4SystemOfUnits.hh"
35 #include "G4Log.hh"
36 #include "G4Exp.hh"
37 #include "G4Pow.hh"
38 
41 {}
42 
44 {}
45 
46 G4double
48  const G4double mu,
49  const G4double nu,
50  const G4double T)
51 {
52  G4double ThermalWaveLenght = 16.15*fermi/std::sqrt(T);
53  G4double lambda3 = ThermalWaveLenght*ThermalWaveLenght*ThermalWaveLenght;
54  static const G4double degeneracy = 4.0; // H3 + He3
55 
56  // old value was 9.224*MeV
58  // + G4NucleiProperties::GetBindingEnergy(theA,2);
59 
60  G4double exponent = (BindingE+ theA*(mu+nu*theZARatio) -
63  if (exponent > 300.0) exponent = 300.0;
64 
65  _MeanMultiplicity = (degeneracy*FreeVol*theA*std::sqrt((G4double)theA)/lambda3)*
66  G4Exp(exponent);
67 
68  return _MeanMultiplicity;
69 }
70 
72 {
75  * theA*G4Pow::GetInstance()->Z23(theA) + 1.5 * T;
76 }
77 
78 G4double
80 {
81  G4double Entropy = 0.0;
82  if (_MeanMultiplicity > 0.0) {
83  G4double ThermalWaveLenght = 16.15*fermi/std::sqrt(T);
84  G4double lambda3 = ThermalWaveLenght*ThermalWaveLenght*ThermalWaveLenght;
85  Entropy = _MeanMultiplicity*(2.5 + G4Log((4*theA)*std::sqrt((G4double)theA)
86  *FreeVol/(lambda3*_MeanMultiplicity)));
87  }
88  return Entropy;
89 }
static G4Pow * GetInstance()
Definition: G4Pow.cc:55
static const G4double degeneracy
G4double CalcMeanMultiplicity(const G4double FreeVol, const G4double mu, const G4double nu, const G4double T)
G4double CalcEnergy(const G4double T)
G4double G4Log(G4double x)
Definition: G4Log.hh:230
G4double G4Exp(G4double initial_x)
Exponential Function double precision.
Definition: G4Exp.hh:183
static G4double GetBindingEnergy(const G4int A, const G4int Z)
static G4double GetCoulomb()
G4double Z23(G4int Z) const
Definition: G4Pow.hh:154
double G4double
Definition: G4Types.hh:76
static constexpr double fermi
Definition: G4SIunits.hh:103
G4double CalcEntropy(const G4double T, const G4double FreeVol)