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// -------------------------------------------------------------------
// $Id: G4PenelopeIonisation.hh,v 1.5 2006/06/29 19:36:33 gunter Exp $
// GEANT4 tag $Name: geant4-09-04-ref-00 $
//
// Author: L. Pandola
//
// History:
// -----------
// 20 Mar 2003  L. Pandola        1st implementation
// 30 Jun 2003  L. Pandola        methods for positrons added
// 04 Jul 2003  L. Pandola        added methods for interfacing
//                                with the cross section handler
// -------------------------------------------------------------------
//
// Class description:
// Penelope electromagnetic process, electron and positron Ionisation
// Further documentation available from http://www.ge.infn.it/geant4/lowE
// --------------------------------------------------------------

#ifndef G4PENELOPEIONISATION_HH
#define G4PENELOPEIONISATION_HH 1

#include "G4eLowEnergyLoss.hh"
#include "G4AtomicDeexcitation.hh"
#include "globals.hh"

class G4Track;
class G4Step;
class G4ParticleDefinition;
class G4VParticleChange;
class G4VDataSetAlgorithm;
class G4ParticleChange;
class G4VCrossSectionHandler;
class G4VEMDataSet;


class G4PenelopeIonisation : public G4eLowEnergyLoss
{ 
public:
 
  G4PenelopeIonisation(const G4String& processName = "PenelopeIoni");
  
  ~G4PenelopeIonisation();
  
  G4bool IsApplicable(const G4ParticleDefinition&);
  
  void PrintInfoDefinition();
  
  void BuildPhysicsTable(const G4ParticleDefinition& ParticleType);
  
  G4VParticleChange* PostStepDoIt(const G4Track& track,         
				  const G4Step& step);                 
 
  void SetCutForLowEnSecPhotons(G4double cut);

  void SetCutForLowEnSecElectrons(G4double cut);

  void ActivateAuger(G4bool val);

  G4double CalculateCrossSectionsRatio(G4double,G4double,
				       G4int, G4double,
				       const G4ParticleDefinition&);


  // For testing purpose only
  G4double DumpMeanFreePath(const G4Track& aTrack,
                            G4double previousStepSize,
                            G4ForceCondition* condition)
  { return GetMeanFreePath(aTrack, previousStepSize, condition); }
  
protected:
 
  G4double GetMeanFreePath(const G4Track& track,
			   G4double previousStepSize,
			   G4ForceCondition* condition );

private:

  // Hide copy constructor and assignment operator as private 
  G4PenelopeIonisation(const G4PenelopeIonisation& );
  G4PenelopeIonisation& operator = (const G4PenelopeIonisation& right);
  
  void BuildLossTable(const G4ParticleDefinition& ParticleType);
  void CalculateDiscreteForElectrons(G4double,G4double,G4int,G4double);
  void CalculateDiscreteForPositrons(G4double,G4double,G4int,G4double);
  void ReadData();
  G4double CalculateDeltaFermi(G4double,G4int,G4double);
  G4double CalculateContinuous(G4double,G4double,G4int,G4double,
			       const G4ParticleDefinition&);
  G4double CalculateStoppingPowerForElectrons(G4double,
					      G4double,G4double,G4double);
  G4double CalculateStoppingPowerForPositrons(G4double,
					      G4double,G4double,G4double);
  
  G4double CrossSectionsRatioForElectrons(G4double,G4double,
					  G4double,G4double,
					  G4int);
  G4double CrossSectionsRatioForPositrons(G4double,G4double,
					  G4double,G4double,
					  G4int);
  G4VCrossSectionHandler* crossSectionHandler;
  G4VEMDataSet* theMeanFreePath;

  // Lower limit for generation of gamma in this model
  G4DataVector cutForDelta;
  G4double cutForPhotons;
  G4double cutForElectrons;
  G4AtomicDeexcitation deexcitationManager;
 
  //Parameters of hard interactions
  G4double kineticEnergy1;
  G4double cosThetaPrimary;
  G4double energySecondary;
  G4double cosThetaSecondary;
  G4int iOsc;

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

#endif