G4HETCChargedFragment.cc

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//
// by V. Lara
//
// Modified:
// 23.08.2010 V.Ivanchenko general cleanup, move constructor and destructor 
//            the source, use G4Pow
//
 
#include "G4HETCChargedFragment.hh"
#include "G4PhysicalConstants.hh"
#include "G4VCoulombBarrier.hh"
#include "G4NuclearLevelData.hh"
 
G4HETCChargedFragment::G4HETCChargedFragment(
  const G4ParticleDefinition* pd, G4VCoulombBarrier* aCoulombBarrier)
  : G4HETCFragment(pd, aCoulombBarrier)
{}
 
G4double G4HETCChargedFragment::SampleKineticEnergy(const G4Fragment& fr)
{
  G4int Pb = fr.GetNumberOfParticles();
  G4int H = fr.GetNumberOfHoles();
 
  G4double g0 = (6.0/pi2)*fNucData->GetLevelDensity(theFragZ, theFragA,
                fr.GetExcitationEnergy());
 
  G4double Ab = std::max(0.0,G4double(Pb*Pb+H*H+Pb-3*H)/(4.0*g0));
  G4double Emax = theMaxKinEnergy - Ab;
 
  G4double x = BetaRand(Pb + H, 2);
  return Emax - (Emax - theCoulombBarrier)*x;
}