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G4EvaporationLevelDensityParameter.cc
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25 //
26 //
27 // Hadronic Process: Nuclear De-excitations
28 // by V. Lara (Oct 1998)
29 //
30 // Modified:
31 // 21.03.2013 V.Ivanchenko redesigned and comment out unused part
32 
33 #include "G4EvaporationLevelDensityParameter.hh"
34 #include "G4NuclearLevelData.hh"
35 
36 G4EvaporationLevelDensityParameter::G4EvaporationLevelDensityParameter()
37 {
38  fNucData = G4NuclearLevelData::GetInstance();
39 }
40 
41 G4EvaporationLevelDensityParameter::~G4EvaporationLevelDensityParameter()
42 {}
43 
44 G4double
45 G4EvaporationLevelDensityParameter::LevelDensityParameter(G4int A, G4int Z, G4double U) const
46 {
47  return fNucData->GetLevelDensity(Z, A, U);
48 }
49 
50 /*
51 #include "G4ShellCorrections.hh"
52 #include "G4SystemOfUnits.hh"
53 
54 // Those values are from table 3 in
55 // A.S. Iljinov et al. Nucl Phys A543 (1992) 517-557
56 // Table 3. alpha, beta and gamma for Cameron Shell corrections
57 // whithout collective effects. f-factor = 2.31.
58 
59 //JMQ 17-04-08 these are not used at present in G4Evaporation
60 const G4double
61 G4EvaporationLevelDensityParameter::ConstEvapLevelDensityParameter = 0.125/MeV;
62 const G4double
63 G4EvaporationLevelDensityParameter::ConstEvapLevelDensityParameter= 0.0769231/MeV;
64 const G4double G4EvaporationLevelDensityParameter::alpha = 0.072/MeV;
65 const G4double G4EvaporationLevelDensityParameter::beta = 0.257/MeV;
66 const G4double G4EvaporationLevelDensityParameter::gamma = 0.059/MeV;
67 const G4double G4EvaporationLevelDensityParameter::Bs = 1.0;
68 
69 // Asymptotic Level Density Parameter
70 //G4double AsymptoticLDP = (alpha*A + beta*g4pow-Z23(A)*Bs)/MeV;
71 
72 // Shape of the LDP U dependence
73 G4double exponent = -gamma*U;
74 G4double f = 1.;
75 if (exponent > -300.) f -= G4Exp(exponent);
76 G4double a = AsymptoticLDP*(1. + ShellCorrection(Z,N)*f/U);
77 return a;
78 */