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// $Id$
//
//
// G4 Model: Charge and strangness exchange based on G4LightMedia model
//           28 May 2006 V.Ivanchenko
//
// Modified:
// 25-Jul-06 V.Ivanchenko add 19 MeV low energy, below which S-wave is sampled
//
//

#ifndef G4ChargeExchange_h
#define G4ChargeExchange_h 1

// Class Description
// Final state production model for hadron nuclear coherent charge exchange;
// Class Description - End

#include "globals.hh"
#include "G4HadronicInteraction.hh"
#include "G4HadProjectile.hh"
#include "G4Nucleus.hh"

class G4ParticleDefinition;

class G4ChargeExchange : public G4HadronicInteraction
{
public:

  G4ChargeExchange();

  virtual ~G4ChargeExchange();

  virtual G4HadFinalState * ApplyYourself(
                   const G4HadProjectile & aTrack,
                   G4Nucleus & targetNucleus);

  void SetLowestEnergyLimit(G4double value);

  void SetRecoilKinEnergyLimit(G4double value);

  G4double SampleT(G4double p, G4double A);

private:

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

  G4double lowEnergyRecoilLimit;
  G4double lowestEnergyLimit;

};

inline void G4ChargeExchange::SetRecoilKinEnergyLimit(G4double value)
{
  lowEnergyRecoilLimit = value;
}

inline void G4ChargeExchange::SetLowestEnergyLimit(G4double value)
{
  lowestEnergyLimit = value;
}

#endif