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// GEANT4 physics class: G4HadronElasticDataSet -- header file
// F.W. Jones, TRIUMF, 28-JAN-97
//
// Modified: V.Ivanchenko
//
// Class Description:
// Baseline data-set for hadron nucleaus elastic cross-section. This does not 
// need to be registered, but provides part of the general cross-section 
// baseline

#ifndef G4HadronElasticDataSet_h
#define G4HadronElasticDataSet_h 1

#include "G4VCrossSectionDataSet.hh"

class G4ParticleDefinition;
class G4NistManager;
class G4HadronCrossSections;

class G4HadronElasticDataSet : public G4VCrossSectionDataSet
{
public:

  G4HadronElasticDataSet(const G4String& name = "GheishaElastic");

  virtual ~G4HadronElasticDataSet();

  virtual void CrossSectionDescription(std::ostream&) const;

  virtual G4bool
  IsElementApplicable(const G4DynamicParticle* aParticle, G4int /*Z*/,
                      const G4Material*);

  virtual G4double
  GetElementCrossSection(const G4DynamicParticle* aParticle, G4int Z, 
			 const G4Material*);

private:

  G4int theZ;
  G4double fElasticXS;
  G4double fKinEnergy;
  const G4ParticleDefinition* fParticle;
  G4HadronCrossSections* fGheishaXS;
  G4NistManager* fNIST;
};

#endif
