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// $Id: G4PenelopeComptonModel.hh,v 1.1 2008/10/28 08:50:21 pandola Exp $
// GEANT4 tag $Name: geant4-09-02-ref-02 $
//
// Author: Luciano Pandola
//
// History:
// -----------
// 02 Oct 2008   L. Pandola   1st implementation. Migration from EM process 
//                            to EM model
//
// -------------------------------------------------------------------
//
// Class description:
// Low Energy Electromagnetic Physics, Compton Scattering
// with Penelope Model
// -------------------------------------------------------------------

#ifndef G4PENELOPECOMPTONMODEL_HH
#define G4PENELOPECOMPTONMODEL_HH 1

#include "globals.hh"
#include "G4VEmModel.hh"
#include "G4DataVector.hh"
#include "G4ParticleChangeForGamma.hh"

class G4ParticleDefinition;
class G4DynamicParticle;
class G4MaterialCutsCouple;
class G4Material;
//class G4PhysicsTable;

class G4PenelopeComptonModel : public G4VEmModel 
{

public:
  
  G4PenelopeComptonModel(const G4ParticleDefinition* p=0,
			 const G4String& processName ="PenCompton");
  
  virtual ~G4PenelopeComptonModel();

  virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);

  virtual G4double ComputeCrossSectionPerAtom(
					      const G4ParticleDefinition*,
					      G4double kinEnergy,
					      G4double Z,
					      G4double A=0,
					      G4double cut=0,
					      G4double emax=DBL_MAX);

  virtual void SampleSecondaries(std::vector<G4DynamicParticle*>*,
				 const G4MaterialCutsCouple*,
				 const G4DynamicParticle*,
				 G4double tmin,
				 G4double maxEnergy);

  void SetUseAtomicDeexcitation(G4bool value){fUseAtomicDeexcitation = value;};		 
  G4bool GetUseAtomicDeexcitation(){return fUseAtomicDeexcitation;};

  void SetVerbosityLevel(G4int lev){verboseLevel = lev;};
  G4int GetVerbosityLevel(){return verboseLevel;};

protected:
  G4ParticleChangeForGamma* fParticleChange;

private:
  //Reads data of atomic shells from database file
  void ReadData();

  //Differential cross section which is numerically integrated
  G4double DifferentialCrossSection (G4double cdt);

  G4PenelopeComptonModel & operator=(const G4PenelopeComptonModel &right);
  G4PenelopeComptonModel(const G4PenelopeComptonModel&);

  //Parameter for the numerical integration of analytical cross section
  G4double energyForIntegration; 
  G4int ZForIntegration;

  //Parameters of atomic shells
  std::map<G4int,G4DataVector*> *ionizationEnergy;
  std::map<G4int,G4DataVector*> *hartreeFunction;
  std::map<G4int,G4DataVector*> *occupationNumber;

  //Intrinsic energy limits of the model: cannot be extended by the parent process
  G4double fIntrinsicLowEnergyLimit;
  G4double fIntrinsicHighEnergyLimit;

  G4bool fUseAtomicDeexcitation;

  G4int verboseLevel;

  G4bool isInitialised;

  

};

#endif