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// $Id: G4CHIPSElasticXS.hh,v 1.1 2010/09/23 18:28:00 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-03-ref-09 $
//
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
//
// File name:    G4CHIPSElasticXS
//
// Author  Ivantchenko, Geant4, 23-SEP-2010
//
// Modifications:
//

// Class Description:
// This is a base class for nucleon elastic cross section based on
// CHIPS parameterisation, the class is extracted from 
// G4UHadronElasticModel
// Class Description - End
 
#ifndef G4CHIPSElasticXS_h
#define G4CHIPSElasticXS_h 1

#include "G4VCrossSectionDataSet.hh"
#include "globals.hh"

class G4DynamicParticle;
class G4ParticleDefinition;
class G4Element;
class G4VQCrossSection;

class G4CHIPSElasticXS : public G4VCrossSectionDataSet
{
public: 

  G4CHIPSElasticXS();

  virtual ~G4CHIPSElasticXS();

  virtual
  G4bool IsApplicable(const G4DynamicParticle*, const G4Element*);

  virtual
  G4bool IsZAApplicable(const G4DynamicParticle*, 
			G4double /*Z*/, G4double /*A*/);

  virtual
  G4bool IsIsoApplicable(const G4DynamicParticle*, 
			 G4int /*Z*/, G4int /*N*/);

  virtual
  G4double GetCrossSection(const G4DynamicParticle*, 
			   const G4Element*, 
	 		   G4double aTemperature = 0.);

  virtual
  G4double GetIsoCrossSection(const G4DynamicParticle*, const G4Isotope*,
                              G4double aTemperature = 0.);

  virtual
  G4double GetIsoZACrossSection(const G4DynamicParticle*, G4double /*Z*/,
                                G4double /*A*/, G4double aTemperature = 0.);

  virtual
  G4double GetZandACrossSection(const G4DynamicParticle*, G4int /*Z*/,
                                G4int /*A*/, G4double aTemperature = 0.);

  virtual
  void BuildPhysicsTable(const G4ParticleDefinition&);

  virtual
  void DumpPhysicsTable(const G4ParticleDefinition&);

private: 

  G4CHIPSElasticXS & operator=(const G4CHIPSElasticXS &right);
  G4CHIPSElasticXS(const G4CHIPSElasticXS&);
  
  G4VQCrossSection*           pCManager;
  G4VQCrossSection*           nCManager;
  const G4ParticleDefinition* theProton;
  const G4ParticleDefinition* theNeutron;
  const G4ParticleDefinition* theParticle;

  G4double thEnergy;
  G4double lowestEnergy;

  G4int  pPDG;
  G4bool isInitialized;
};

#endif