//
// ********************************************************************
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//
// -------------------------------------------------------------------
// $Id: G4LowEnergyIonisation.hh,v 1.39 2003/02/07 15:39:02 vnivanch Exp $
// GEANT4 tag $Name: geant4-05-01 $
//
// Author: A. Forti
//
// History:
// -----------
// 02 Mar 1999  A. Forti        1st implementation
// 27 Sep 2001  V. Ivanchenko   Major revision according to a design iteration
// 10 Oct 2001  M.G. Pia        Revision to improve code quality and 
//                              consistency with design
// 18 Oct 2001  M.G. Pia        Revision to improve code quality and 
//                              consistency with design
// 29 Nov 2001  V.Ivanchenko    New parametrisation of EEDL data
// 31 May 2002  V.Ivanchenko    Add Auger flag
// 06 Feb 2003  V.Ivanchenko    Change signature of deexcitation for cut per region
//
// -------------------------------------------------------------------

// Class description:
// Low Energy electromagnetic process, electron Ionisation
// based on the data of the EEDL database. Details are described
// in the Physics Reference Manual.
// Further documentation available from http://www.ge.infn.it/geant4/lowE

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

#ifndef G4LOWENERGYIONISATION_HH
#define G4LOWENERGYIONISATION_HH 1

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

class G4Track;
class G4Step;
class G4ParticleDefinition;
class G4VParticleChange;
class G4VDataSetAlgorithm;
class G4ParticleChange;
class G4VEnergySpectrum;
class G4VCrossSectionHandler;
class G4ShellVacancy;
class G4VEMDataSet;

class G4LowEnergyIonisation : public G4eLowEnergyLoss
{ 
public:
 
  G4LowEnergyIonisation(const G4String& processName = "LowEnergyIoni");
  
  ~G4LowEnergyIonisation();
  
  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);
    
protected:
 
  G4double GetMeanFreePath(const G4Track& track,
			   G4double previousStepSize,
			   G4ForceCondition* condition );

protected:

  virtual G4std::vector<G4DynamicParticle*>* DeexciteAtom(const G4MaterialCutsCouple* couple,
							  G4double incidentEnergy,
							  G4double eLoss);

private:

  // Hide copy constructor and assignment operator as private 
  G4LowEnergyIonisation(const G4LowEnergyIonisation& );
  G4LowEnergyIonisation& operator = (const G4LowEnergyIonisation& right);
  
  void BuildLossTable(const G4ParticleDefinition& ParticleType);
  
  G4VCrossSectionHandler* crossSectionHandler;
  G4VEMDataSet* theMeanFreePath;
  G4VEnergySpectrum* energySpectrum;

  // Lower limit for generation of gamma in this model
  G4DataVector cutForDelta;
  G4double cutForPhotons;
  G4double cutForElectrons;
  G4AtomicDeexcitation deexcitationManager;
  G4ShellVacancy* shellVacancy;
  
};

#endif