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// $Id: G4DNAExcitationInWater.icc,v 1.3 2006/06/29 19:34:14 gunter Exp $
// GEANT4 tag $Name: geant4-08-01 $
//

#ifdef    G4DNAEXCITATIONINWATER_HH
 template<typename TotalCrossSectionPolicy, typename FinalStatesPolicy>
 G4VParticleChange *                      G4DNAExcitationInWater<TotalCrossSectionPolicy, FinalStatesPolicy> :: PostStepDoIt(const G4Track & aTrack, const G4Step & aStep)
 {
  const G4int z(10); // H2O number of electrons
  
  this->aParticleChange.Initialize(aTrack);
  
  G4double k;
  k=aTrack.GetDynamicParticle()->GetKineticEnergy();
  
  G4int excitationLevel(this->RandomizePartialCrossSection(k, z));
  G4double excitationEnergy(this->EnergyConstant(excitationLevel));
  
  this->aParticleChange.ProposeEnergy(k-excitationEnergy);
  this->aParticleChange.ProposeLocalEnergyDeposit(excitationEnergy);
  this->aParticleChange.ProposeMomentumDirection(aTrack.GetDynamicParticle()->GetMomentumDirection());
  this->aParticleChange.SetNumberOfSecondaries(0);
  
  return G4VDNAProcessInWater<TotalCrossSectionPolicy, FinalStatesPolicy>::PostStepDoIt(aTrack, aStep);
 }
#endif /* G4DNAEXCITATIONINWATER_HH */