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G4StatMFMacroTriNucleon.cc
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28 // Hadronic Process: Nuclear De-excitations
29 // by V. Lara
30 
32 #include "G4PhysicalConstants.hh"
33 #include "G4SystemOfUnits.hh"
34 #include "G4Log.hh"
35 #include "G4Exp.hh"
36 #include "G4Pow.hh"
37 
40 {}
41 
43 {}
44 
45 G4double
47  const G4double mu,
48  const G4double nu,
49  const G4double T)
50 {
51  G4double ThermalWaveLenght = 16.15*fermi/std::sqrt(T);
52  G4double lambda3 = ThermalWaveLenght*ThermalWaveLenght*ThermalWaveLenght;
53  static const G4double degeneracy = 4.0; // H3 + He3
54 
55  // old value was 9.224*MeV
57  // + G4NucleiProperties::GetBindingEnergy(theA,2);
58 
59  G4double exponent = (BindingE+ theA*(mu+nu*theZARatio) -
62  if (exponent > 300.0) exponent = 300.0;
63 
64  _MeanMultiplicity = (degeneracy*FreeVol*theA*std::sqrt((G4double)theA)/lambda3)*
65  G4Exp(exponent);
66 
67  return _MeanMultiplicity;
68 }
69 
71 {
74  * theA*G4Pow::GetInstance()->Z23(theA) + 1.5 * T;
75 }
76 
77 G4double
79 {
80  G4double Entropy = 0.0;
81  if (_MeanMultiplicity > 0.0) {
82  G4double ThermalWaveLenght = 16.15*fermi/std::sqrt(T);
83  G4double lambda3 = ThermalWaveLenght*ThermalWaveLenght*ThermalWaveLenght;
84  Entropy = _MeanMultiplicity*(2.5 + G4Log((4*theA)*std::sqrt((G4double)theA)
85  *FreeVol/(lambda3*_MeanMultiplicity)));
86  }
87  return Entropy;
88 }