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Geant4/processes/hadronic/models/de_excitation/fission/src/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 */
 79