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// by V. Lara

#ifndef G4HETCHe3_h
#define G4HETCHe3_h 1

#include "G4HETCChargedFragment.hh"
#include "G4ReactionProduct.hh"
#include "G4He3.hh"

#include "G4He3CoulombBarrier.hh"


class G4HETCHe3 : public G4HETCChargedFragment
{
public:
  // default constructor
  G4HETCHe3():G4HETCChargedFragment(3,2,&theHe3CoulombBarrier,"He3") {}

  // copy constructor
  G4HETCHe3(const G4HETCHe3 &right): G4HETCChargedFragment(right) {}

  // destructor
  ~G4HETCHe3() {}

  // operators  
  const G4HETCHe3 & operator=(const G4HETCHe3 &right) 
  {
    if (&right != this) this->G4HETCChargedFragment::operator=(right);
    return *this;
  }
  
  G4bool operator==(const G4HETCHe3 &right) const
  { 
    return G4HETCChargedFragment::operator==(right);
  }

  
  G4bool operator!=(const G4HETCHe3 &right) const
  { 
    return G4HETCChargedFragment::operator!=(right);
  }


  G4ReactionProduct * GetReactionProduct() const
  {
    G4ReactionProduct * theReactionProduct =
      new G4ReactionProduct(G4He3::He3Definition());
    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*(4.0/3.0);
  }
  

  virtual G4double GetBeta()
  {
    return -GetCoulombBarrier();
  }
  
  //   virtual G4double FactorialFactor(const G4double N, const G4double P)
  //   {
  //     return 
  //       (N-3.0)*(P-2.0)*(
  // 		       (((N-2.0)*(P-1.0))/2.0) *(
  // 						 (((N-1.0)*P)/3.0) 
  // 						 )
  // 		       );
  //   }
  
  virtual G4double GetSpinFactor()
  {
    // 2s+1
    return 2.0;
  }    

  virtual G4double K(const G4Fragment & aFragment);

private:

  G4He3CoulombBarrier theHe3CoulombBarrier;

};

#endif