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// $Id: G4CookShellCorrections.hh,v 1.5 2009/03/04 11:05:02 gcosmo Exp $
// GEANT4 tag $Name: geant4-09-03-beta-cand-01 $
//
// Hadronic Process: Nuclear De-excitations
// by V. Lara


#ifndef G4CookShellCorrections_h
#define G4CookShellCorrections_h 1

#include "globals.hh" 

//#define verbose 1

class G4CookShellCorrections
{
private:

  G4CookShellCorrections();
	
  static G4CookShellCorrections* theInstance;


public:
	
  static G4CookShellCorrections* GetInstance();

  ~G4CookShellCorrections();

  G4double GetShellCorrection(const G4int A, const G4int Z) const 
  {
    return GetShellZ(Z) + GetShellN(A-Z); 
  }

  G4double GetShellZ(const G4int Z) const 
  {
    if ( this->IsInTableThisZ(Z) ) return ShellZTable[Z-ZTableMin]*MeV;
    else {
#ifdef verbose
      G4cerr << "G4CookShellCorrections: out of table for Z = " << Z << G4endl;
#endif
      return 0.0;
    }
  }

  G4bool IsInTableThisZ(const G4int Z) const 
  {
    if ( Z >= ZTableMin && Z <= ZTableMax ) return true;
    else return false;
  }
  
  G4double GetShellN(const G4int N) const 
  {
    if ( this->IsInTableThisN(N) ) return ShellNTable[N-NTableMin]*MeV;
    else {
#ifdef verbose
      G4cerr << "G4CookShellCorrections: out of table for N = " << N << G4endl;
#endif
      return 0.0;
    }
  }
    
  G4bool IsInTableThisN(const G4int N) const 
  {
    if ( N >= NTableMin && N <= NTableMax ) return true;
    else return false;
  }
  
  enum  { ZTableSize = 68, NTableSize = 118, ZTableMin = 28, ZTableMax = 95,
	  NTableMin = 33, NTableMax = 150 };
private:
  
  
  
  static const G4double ShellZTable[ZTableSize];
  
  static const G4double ShellNTable[NTableSize];
  
};
#endif