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// $Id$
//
//
// Geant4 Hadron Elastic Charge Exchange Process -- header file
//
// Created 21 April 2006 V.Ivanchenko
//
// Modified:
//

// Class Description
// Process for hadron nuclear elastic scattering using optimal
// combination of Geant4 models
// Class Description - End

#ifndef G4ChargeExchangeProcess_h
#define G4ChargeExchangeProcess_h 1

#include "globals.hh"
#include "G4HadronicProcess.hh"
#include "G4Nucleus.hh"

class G4ParticleDefinition;
class G4CrossSectionDataStore;
class G4PhysicsLinearVector;

class G4ChargeExchangeProcess : public G4HadronicProcess
{
public:

  G4ChargeExchangeProcess(const G4String& procName = "chargeExchange");

  virtual ~G4ChargeExchangeProcess();

  virtual G4bool IsApplicable(const G4ParticleDefinition& aParticleType);

  virtual void BuildPhysicsTable(const G4ParticleDefinition& aParticleType);

  virtual void DumpPhysicsTable(const G4ParticleDefinition& aParticleType);

  virtual G4double GetElementCrossSection(const G4DynamicParticle* aParticle,
					  const G4Element* anElement,
					  const G4Material* mat = 0);

private:

  const G4ParticleDefinition* theParticle;

  const G4ParticleDefinition* theProton;
  const G4ParticleDefinition* theNeutron;
  const G4ParticleDefinition* theAProton;
  const G4ParticleDefinition* theANeutron;
  const G4ParticleDefinition* thePiPlus;
  const G4ParticleDefinition* thePiMinus;
  const G4ParticleDefinition* thePiZero;
  const G4ParticleDefinition* theKPlus;
  const G4ParticleDefinition* theKMinus;
  const G4ParticleDefinition* theK0S;
  const G4ParticleDefinition* theK0L;
  const G4ParticleDefinition* theL;
  const G4ParticleDefinition* theAntiL;
  const G4ParticleDefinition* theSPlus;
  const G4ParticleDefinition* theASPlus;
  const G4ParticleDefinition* theSMinus;
  const G4ParticleDefinition* theASMinus;
  const G4ParticleDefinition* theS0;
  const G4ParticleDefinition* theAS0;
  const G4ParticleDefinition* theXiMinus;
  const G4ParticleDefinition* theXi0;
  const G4ParticleDefinition* theAXiMinus;
  const G4ParticleDefinition* theAXi0;
  const G4ParticleDefinition* theOmega;
  const G4ParticleDefinition* theAOmega;
  const G4ParticleDefinition* theD;
  const G4ParticleDefinition* theT;
  const G4ParticleDefinition* theA;
  const G4ParticleDefinition* theHe3;

  G4CrossSectionDataStore* store;
  G4PhysicsLinearVector*   factors;

  G4double        thEnergy;

  G4int    pPDG;
  G4bool   first;
};

#endif