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// by V. Lara

#include "G4HETCChargedFragment.hh"
#include "G4PreCompoundParameters.hh"


G4double G4HETCChargedFragment::
GetKineticEnergy(const G4Fragment & aFragment)
{
  // Number of protons in projectile
  G4double Pa = aFragment.GetParticleDefinition()->GetPDGCharge();
  // Number of neutrons in projectile 
  G4double Na = aFragment.GetParticleDefinition()->GetBaryonNumber();
  Na -= Pa;
  
  G4double Pb = aFragment.GetNumberOfParticles();
  G4double H = aFragment.GetNumberOfHoles();

  G4double Ab = std::max(0.0,(Pb*Pb+H*H+Pb-3*H)/4.0);
  G4double Emax = GetMaximalKineticEnergy() - Ab;

  G4double x = BetaRand(static_cast<G4int>(Pb+H),2);
  
  return Emax - (Emax-GetCoulombBarrier())*x;
}