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// $Id: G4IonProtonCrossSection.cc,v 1.4 2010/10/15 23:49:33 dennis Exp $
// GEANT4 tag $Name: hadr-cross-V09-03-12 $
//
// -------------------------------------------------------------------
//
// GEANT4 Class file
//
//
// File name:  G4IonProtonCrossSection
//
// Author  Ivantchenko, Geant4, 30 July 2010
//
// Modifications:
//

#include "G4IonProtonCrossSection.hh"
#include "G4ProtonInelasticCrossSection.hh"
#include "G4DynamicParticle.hh"
#include "G4Element.hh"
#include "G4HadTmpUtil.hh"

using namespace std;

G4IonProtonCrossSection::G4IonProtonCrossSection() 
  : G4VCrossSectionDataSet("AxenWellischIonH") 
{
  theForward = new G4ProtonInelasticCrossSection();
}

G4IonProtonCrossSection::~G4IonProtonCrossSection()
{
  delete theForward;
}

G4bool 
G4IonProtonCrossSection::IsApplicable(const G4DynamicParticle* dp, 
				      const G4Element* elm)
{
  G4int Z = G4lrint(elm->GetZ());
  G4int A = G4lrint(elm->GetN());
  return IsIsoApplicable(dp, Z, A);
}


G4bool 
G4IonProtonCrossSection::IsIsoApplicable(const G4DynamicParticle* dp,
					 G4int Z, G4int A)
{
  G4bool result = false;
  if(Z < 2 && A < 2 && dp->GetDefinition()->GetPDGCharge()/eplus > 2.5) 
    { result = true;}
  return result;
}


G4double 
G4IonProtonCrossSection::GetCrossSection(const G4DynamicParticle* dp, 
					 const G4Element*, G4double)
{
  return GetZandACrossSection(dp);
}


G4double 
G4IonProtonCrossSection::GetZandACrossSection(const G4DynamicParticle* dp, 
					      G4int /*ZZ*/, G4int /*AA*/, 
					      G4double /*temperature*/)
{
  const G4ParticleDefinition* p = dp->GetDefinition();
  G4double e = dp->GetKineticEnergy()*proton_mass_c2/p->GetPDGMass();
  return theForward->GetCrossSection(e, p->GetBaryonNumber(),
				     G4lrint(p->GetPDGCharge()/eplus) );
}

void G4IonProtonCrossSection::BuildPhysicsTable(const G4ParticleDefinition&)
{}

void G4IonProtonCrossSection::DumpPhysicsTable(const G4ParticleDefinition&)
{
  G4cout << "G4IonProtonCrossSection: " << GetName() << " uses formula"
	 <<G4endl;
}