G4NeutronEvaporationProbability.cc

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//
// J.M. Quesada (August2008). Based on:
//
// Hadronic Process: Nuclear De-excitations
// by V. Lara (Oct 1998)
//
// Modified:
// 03-09-2008 J.M. Quesada for external choice of inverse cross section option
// 17-11-2010 V.Ivanchenko integer Z and A
 
#include "G4NeutronEvaporationProbability.hh"
#include "G4SystemOfUnits.hh"
#include "G4Pow.hh"
 
G4NeutronEvaporationProbability::G4NeutronEvaporationProbability() :
    G4EvaporationProbability(1,0,2.0)
{}
 
G4double G4NeutronEvaporationProbability::CalcAlphaParam(const G4Fragment& fr)
{ 
  return 0.76+2.2/pG4pow->Z13(fr.GetA_asInt() - 1);
}
    
G4double G4NeutronEvaporationProbability::CalcBetaParam(const G4Fragment& fr)
{
  // in MeV
  return (2.12/pG4pow->Z23(fr.GetA_asInt() - 1) - 0.05)/CalcAlphaParam(fr); 
}