G4CameronGilbertPairingCorrections.hh

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// $Id$
//
// Hadronic Process: Nuclear De-excitations
// by V. Lara
 
 
#ifndef G4CameronGilbertPairingCorrections_h
#define G4CameronGilbertPairingCorrections_h 1
 
#include <CLHEP/Units/SystemOfUnits.h>
#include "globals.hh"
 
//#define verbose 1
 
class G4CameronGilbertPairingCorrections
{
private:
  // Dummy constructor
  G4CameronGilbertPairingCorrections();
    
  static G4CameronGilbertPairingCorrections* theInstance;
 
 
public:
  static G4CameronGilbertPairingCorrections* GetInstance();
 
  ~G4CameronGilbertPairingCorrections();
 
  G4double GetPairingCorrection(const G4int A, const G4int Z) const
  {
    return GetPairingZ(Z) + GetPairingN(A-Z);
  }
 
  G4double GetPairingZ(const G4int Z) const 
  {
    if (IsInTableThisZ(Z)) return PairingZTable[Z-ZTableMin]*CLHEP::MeV;
    else {
#ifdef verbose
      G4cerr << "G4CameronGilbertPairingCorrections: 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 GetPairingN(const G4int N) const 
  {
   if (IsInTableThisN(N)) return PairingNTable[N-NTableMin]*CLHEP::MeV;
    else {
#ifdef verbose
      G4cerr << "G4CameronGilbertPairingCorrections: 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 = 88, NTableSize = 140, ZTableMin = 11, ZTableMax = 98,
      NTableMin = 11, NTableMax = 150 };
 
private:
 
 
 
  static const G4double PairingZTable[ZTableSize];
 
  static const G4double PairingNTable[NTableSize];
    
};
#endif