G4CookPairingCorrections.hh

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// $Id$
//
// Hadronic Process: Nuclear De-excitations
// by V. Lara
 
 
#ifndef G4CookPairingCorrections_h
#define G4CookPairingCorrections_h 1
 
#include <CLHEP/Units/SystemOfUnits.h>
 
#include "globals.hh"
 
//#define verbose 1
 
class G4CookPairingCorrections
{
private:
  G4CookPairingCorrections();
    
  static G4CookPairingCorrections* theInstance;
  
 
public:
  static G4CookPairingCorrections* GetInstance();
 
  ~G4CookPairingCorrections();
 
  G4double GetParingCorrection(G4int A, G4int Z) const {
    return GetPairingZ(Z) + GetPairingN(A-Z);
  }
 
 
  G4double GetPairingZ(G4int Z) const {
    if ( this->IsInTableThisZ(Z) ) return PairingZTable[Z-ZTableMin]*CLHEP::MeV;
    else {
#ifdef verbose
      G4cerr << "G4CookPairingCorrections: 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 ( this->IsInTableThisN(N) ) return PairingNTable[N-NTableMin]*CLHEP::MeV;
    else {
#ifdef verbose
      G4cerr << "G4CookPairingCorrections: 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 PairingZTable[ZTableSize];
  
  static const G4double PairingNTable[NTableSize];
  
};
#endif