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// $Id: G4AnalyticalEcpssrLiCrossSection.hh,v 1.2 2010/06/25 09:41:09 gunter Exp $
// GEANT4 tag $Name: geant4-09-04-ref-00 $
//
// Author: Haifa Ben Abdelouahed
//         
//
// History:
// -----------
//  23 Apr 2008   H. Ben Abdelouahed   1st implementation
//  28 Apr 2008   MGP        Major revision according to a design iteration
//  29 Apr 2009   ALF Updated Desing for Integration
//  01 Sep 2009   ALF Updated to G4AnalyticalEcpssrLiCrossSection
//
// -------------------------------------------------------------------

// Class description:
// Low Energy Electromagnetic Physics, Cross section, p and alpha ionisation, L shell
// Further documentation available from http://www.ge.infn.it/geant4/lowE

// -------------------------------------------------------------------


#ifndef G4ANALYTICALECPSSRLICROSSSECTION_HH
#define G4ANALYTICALECPSSRLICROSSSECTION_HH 1

#include "G4VecpssrLiModel.hh"
#include "globals.hh"
#include <map>
#include <vector>

class G4AnalyticalEcpssrLiCrossSection : public G4VecpssrLiModel

{
public:

  G4AnalyticalEcpssrLiCrossSection();

  ~G4AnalyticalEcpssrLiCrossSection();
			     
  G4double CalculateL1CrossSection(G4int zTarget,G4double massIncident, G4double energyIncident);//according to W.Brandt and G.Lapicki, Phys.Rev.A23(1981)

  G4double CalculateL2CrossSection(G4int zTarget,G4double massIncident, G4double energyIncident);//according to W.Brandt and G.Lapicki, Phys.Rev.A23(1981)

  G4double CalculateL3CrossSection(G4int zTarget,G4double massIncident, G4double energyIncident);//according to W.Brandt and G.Lapicki, Phys.Rev.A23(1981)
				    
  G4double CalculateVelocity(G4int subShell, G4int zTarget,G4double massIncident, G4double energyIncident); 
			      
  G4double  ExpIntFunction(G4int n,G4double x);//Exponential Integral Function

   

private:


  G4AnalyticalEcpssrLiCrossSection(const G4AnalyticalEcpssrLiCrossSection&);
  G4AnalyticalEcpssrLiCrossSection & operator = (const G4AnalyticalEcpssrLiCrossSection &right);

  G4double FunctionFL1(G4double k, G4double theta);
  
  G4double FunctionFL2(G4double k, G4double theta);


  G4double LogLogInterpolate(G4double e1, G4double e2, G4double e, G4double xs1, G4double xs2);
   
  G4double LinLogInterpolate(G4double e1, G4double e2, G4double e, G4double xs1, G4double xs2);
 
  G4double LinLinInterpolate(G4double e1, G4double e2, G4double e, G4double xs1, G4double xs2);
  
  G4double QuadInterpolator(G4double e11, 
 		            G4double e12, 
			    G4double e21, 
			    G4double e22, 
			    G4double x11,
			    G4double x12, 
			    G4double x21, 
			    G4double x22, 
			    G4double t1, 
			    G4double t2, 
			    G4double t, 
			    G4double e);

  typedef std::map<double, std::map<double, double> > TriDimensionMap;

  TriDimensionMap FL1Data;
  
  TriDimensionMap FL2Data;
  std::vector<double> dummyVec1;
  std::vector<double> dummyVec2;



  typedef std::map<double, std::vector<double> > VecMap;
  VecMap aVecMap1;
  VecMap aVecMap2;

  G4int verboseLevel;

};

#endif
