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// $Id: G4PreCompoundTransitions.hh,v 1.8 2010/08/28 15:16:55 vnivanch Exp $
// GEANT4 tag $Name: geant4-09-03-ref-09 $
//
// by V. Lara
// 01.05.2008 J. M. Quesada . New methods for accessing to individual transition 
//                 probabilities (landa+, landa-, landa0) from G4PreCompoundModel  
// 20.08.2010 V.Ivanchenko move constructor and destructor to the source

#ifndef G4PreCompoundTransitions_h
#define G4PreCompoundTransitions_h 1

// Compute transition probailities:
// TransitionProb1 => probability of transition with  \Delta N = +2
//                    number of excitons will be increased on 2
// TransitionProb2 => probability of transition with  \Delta N = -2
//                    number of excitons will be decreased on 2
// TransitionProb3 => probability of transition with  \Delta N = 0
//                    number of excitons will be the same

#include "G4VPreCompoundTransitions.hh"

#include "globals.hh"
#include "G4Fragment.hh"

class G4ParticleDefinition;
class G4Pow;

class G4PreCompoundTransitions : public G4VPreCompoundTransitions
{
public:

  G4PreCompoundTransitions();

  virtual ~G4PreCompoundTransitions();

  virtual G4double CalculateProbability(const G4Fragment & aFragment);
  
  virtual void PerformTransition(G4Fragment & aFragment);

private:
  
  G4PreCompoundTransitions(const G4PreCompoundTransitions &); 
  const G4PreCompoundTransitions& operator=(const G4PreCompoundTransitions &right);
  G4bool operator==(const G4PreCompoundTransitions &right) const;
  G4bool operator!=(const G4PreCompoundTransitions &right) const;

  G4Pow* g4pow;
  const G4ParticleDefinition* proton;

  G4double FermiEnergy;
  G4double r0;  // Nuclear radius
  G4double aLDP;// Level density parameter
};

#endif