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// $Id$
//

#ifndef G4DNAEmfietzoglouExcitationModel_h
#define G4DNAEmfietzoglouExcitationModel_h 1

#include "G4VEmModel.hh"
#include "G4ParticleChangeForGamma.hh"
#include "G4ProductionCutsTable.hh"

#include "G4DNAWaterExcitationStructure.hh"
#include <deque>
#include "Randomize.hh"
#include "G4Electron.hh"
#include "G4NistManager.hh"

class G4DNAEmfietzoglouExcitationModel : public G4VEmModel
{

public:

  G4DNAEmfietzoglouExcitationModel(const G4ParticleDefinition* p = 0, 
		          const G4String& nam = "DNAEmfietzoglouExcitationModel");

  virtual ~G4DNAEmfietzoglouExcitationModel();

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

  virtual G4double CrossSectionPerVolume(const G4Material* material,
					   const G4ParticleDefinition* p,
					   G4double ekin,
					   G4double emin,
					   G4double emax);

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

  // Cross section

  G4double PartialCrossSection(G4double energy,G4int level);

protected:

  G4ParticleChangeForGamma* fParticleChangeForGamma;

private:
  // Water density table
  const std::vector<G4double>* fpWaterDensity;

  G4double lowEnergyLimit;  
  G4double highEnergyLimit; 
  G4bool isInitialised;
  G4int verboseLevel;
  
  // Cross section

  G4double Sum(G4double energy);

  G4int RandomSelect(G4double energy);
  
  G4int nLevels;

  G4DNAWaterExcitationStructure waterExcitation;
  
  //
   
  G4DNAEmfietzoglouExcitationModel & operator=(const  G4DNAEmfietzoglouExcitationModel &right);
  G4DNAEmfietzoglouExcitationModel(const  G4DNAEmfietzoglouExcitationModel&);

};

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#endif