G4EvaporationLevelDensityParameter.cc

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//
// Hadronic Process: Nuclear De-excitations
// by V. Lara (Oct 1998)
//
// Modified:
// 21.03.2013 V.Ivanchenko redesigned and comment out unused part

#include "G4EvaporationLevelDensityParameter.hh"
#include "G4NuclearLevelData.hh"

G4EvaporationLevelDensityParameter::G4EvaporationLevelDensityParameter() 
{
  fNucData = G4NuclearLevelData::GetInstance();
}

G4EvaporationLevelDensityParameter::~G4EvaporationLevelDensityParameter() 
{}

G4double 
G4EvaporationLevelDensityParameter::LevelDensityParameter(G4int A, G4int Z, G4double U) const 
{
  return fNucData->GetLevelDensity(Z, A, U);
}

/*
#include "G4ShellCorrections.hh"
#include "G4SystemOfUnits.hh"

// Those values are from table 3 in 
// A.S. Iljinov et al. Nucl Phys A543 (1992) 517-557
// Table 3. alpha, beta and gamma for Cameron Shell corrections
// whithout collective effects. f-factor = 2.31.

//JMQ 17-04-08 these are not used at present in G4Evaporation 
const G4double 
G4EvaporationLevelDensityParameter::ConstEvapLevelDensityParameter = 0.125/MeV;
const G4double 
G4EvaporationLevelDensityParameter::ConstEvapLevelDensityParameter= 0.0769231/MeV;
const G4double G4EvaporationLevelDensityParameter::alpha = 0.072/MeV;
const G4double G4EvaporationLevelDensityParameter::beta = 0.257/MeV;
const G4double G4EvaporationLevelDensityParameter::gamma = 0.059/MeV;
const G4double G4EvaporationLevelDensityParameter::Bs = 1.0;

// Asymptotic Level Density Parameter
//G4double AsymptoticLDP = (alpha*A + beta*g4pow-Z23(A)*Bs)/MeV;
  
// Shape of the LDP U dependence
G4double exponent = -gamma*U;
G4double f = 1.;
if (exponent > -300.) f -= G4Exp(exponent);
G4double a = AsymptoticLDP*(1. + ShellCorrection(Z,N)*f/U);
return a;
*/