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// by V. Lara

#ifndef G4HETCAlpha_h
#define G4HETCAlpha_h 1

#include "G4HETCChargedFragment.hh"
#include "G4ReactionProduct.hh"
#include "G4Alpha.hh"

#include "G4AlphaCoulombBarrier.hh"


class G4HETCAlpha : public G4HETCChargedFragment
{
public:
  // default constructor
  G4HETCAlpha():G4HETCChargedFragment(4,2,&theAlphaCoulombBarrier,"Alpha") {}

  // copy constructor
  G4HETCAlpha(const G4HETCAlpha &right): G4HETCChargedFragment(right) {}

  // destructor
  ~G4HETCAlpha() {}

  // operators  
  const G4HETCAlpha & operator=(const G4HETCAlpha &right) 
  {
    if (&right != this) this->G4HETCChargedFragment::operator=(right);
    return *this;
  };
  
  G4bool operator==(const G4HETCAlpha &right) const
  { 
    return G4HETCChargedFragment::operator==(right);
  }

  
  G4bool operator!=(const G4HETCAlpha &right) const
  { 
    return G4HETCChargedFragment::operator!=(right);
  }


  G4ReactionProduct * GetReactionProduct() const
  {
    G4ReactionProduct * theReactionProduct =
      new G4ReactionProduct(G4Alpha::AlphaDefinition());
    theReactionProduct->SetMomentum(GetMomentum().vect());
    theReactionProduct->SetTotalEnergy(GetMomentum().e());
#ifdef PRECOMPOUND_TEST
    theReactionProduct->SetCreatorModel("G4PrecompoundModel");
#endif
    return theReactionProduct;
  }   
    
private:
  virtual G4double GetAlpha()
  {
    G4double C = 0.0;
    G4double aZ = GetZ() + GetRestZ();
    if (aZ <= 30) 
      {
	C = 0.10;
      } 
    else if (aZ <= 50) 
      {
	C = 0.1 + -((aZ-50.)/20.)*0.02;
      }
    else if (aZ < 70) 
      {
	C = 0.08 + -((aZ-70.)/20.)*0.02;
      }
    else 
      {
	C = 0.06;
      }
    return 1.0+C;
  }
  
  virtual G4double GetBeta()
  {
    return -GetCoulombBarrier();
  }
  

  virtual G4double GetSpinFactor()
  {
    return 1.0;
  }

  virtual G4double K(const G4Fragment & aFragment);


private:

  G4AlphaCoulombBarrier theAlphaCoulombBarrier;

};

#endif