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// $Id: G4FinalStateIonisationRudd.hh,v 1.4 2008/07/14 20:47:34 sincerti Exp $
// GEANT4 tag $Name: geant4-09-02-ref-02 $


#ifndef G4FINALSTATEIONISATIONRUDD_HH
#define G4FINALSTATEIONISATIONRUDD_HH 1
 
#include "G4FinalStateProduct.hh"
#include "G4WaterIonisationStructure.hh"
#include "G4CrossSectionIonisationRuddPartial.hh"
#include "G4Electron.hh"
#include "G4Proton.hh"

class G4FinalStateIonisationRudd
{
public:
   
  G4FinalStateIonisationRudd();
   
  ~G4FinalStateIonisationRudd();
   
  const G4FinalStateProduct& GenerateFinalState(const G4Track& track, const G4Step& step);
   
private:
   
  G4double lowEnergyLimitDefault;
  G4double highEnergyLimitDefault;
  std::map<G4String,G4double,std::less<G4String> > lowEnergyLimit;
  std::map<G4String,G4double,std::less<G4String> > highEnergyLimit;

  G4FinalStateProduct product;

  G4WaterIonisationStructure waterStructure;

  G4CrossSectionIonisationRuddPartial cross;
   
  G4double RandomizeEjectedElectronEnergy(G4ParticleDefinition* particleDefinition, 
					  G4double incomingParticleEnergy, 
					  G4int shell);

  void RandomizeEjectedElectronDirection(G4ParticleDefinition* particleDefinition, 
					 G4double incomingParticleEnergy, 
					 G4double outgoingParticleEnergy, 
					 G4double & cosTheta, 
					 G4double & phi);
   
  G4double  DifferentialCrossSection(G4ParticleDefinition* particleDefinition, 
				   G4double k, 
				   G4double energyTransfer, 
				   G4int shell);

  G4double CorrectionFactor(G4ParticleDefinition* particleDefinition, G4double k);

  G4double S_1s(G4double t, 
		G4double energyTransferred, 
		G4double slaterEffectiveChg, 
		G4double shellNumber);

  G4double S_2s(G4double t, 
		G4double energyTransferred, 
		G4double slaterEffectiveChg, 
		G4double shellNumber);


  G4double S_2p(G4double t, 
		G4double energyTransferred, 
		G4double slaterEffectiveChg, 
		G4double shellNumber);

  G4double R(G4double t, 
	     G4double energyTransferred, 
	     G4double slaterEffectiveChg, 
	     G4double shellNumber) ;

  G4double slaterEffectiveCharge[3];
  G4double sCoefficient[3];
};

#endif
