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//	G4IonCoulombScatteringModel.hh
// -------------------------------------------------------------------
//
// GEANT4 Class header file
//
// File name:    G4IonCoulombScatteringModel 
//
// Author:	Cristina Consolandi
//
// Creation date: 05.10.2010 from G4eCoulombScatteringModel 
//				& G4CoulombScatteringModel
//
//
// Class Description:
//	Single Scattering Model for
//      for protons, alpha and heavy Ions
//
// Reference:		
//	M.J. Boschini et al. "Nuclear and Non-Ionizing Energy-Loss 
//	for Coulomb ScatteredParticles from Low Energy up to Relativistic 
//	Regime in Space	Radiation Environment"
//	Accepted for publication in the Proceedings of  the  ICATPP Conference
//	on Cosmic Rays for Particle and Astroparticle Physics, Villa  Olmo, 7-8
//	October,  2010, to be published by World Scientific (Singapore).
//
//      Available for downloading at:
//      http://arxiv.org/abs/1011.4822
//
// -------------------------------------------------------------------
//

#ifndef G4IonCoulombScatteringModel_h
#define G4IonCoulombScatteringModel_h 1

#include "G4VEmModel.hh"
#include "globals.hh"
#include "G4NistManager.hh"
#include "G4IonCoulombCrossSection.hh"

#include <vector>
using namespace std;

class G4ParticleChangeForGamma;
class G4ParticleDefinition;

class G4IonCoulombScatteringModel : public G4VEmModel
{

public:

  	G4IonCoulombScatteringModel(const G4String& nam = "IonCoulombScattering");
 
  	virtual ~G4IonCoulombScatteringModel();

  	virtual void Initialise(const G4ParticleDefinition*, const G4DataVector&);
 
  	virtual G4double ComputeCrossSectionPerAtom(
                                const G4ParticleDefinition*,
				G4double kinEnergy, 
				G4double Z, 
				G4double A, 
				G4double cut,
				G4double emax);

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


  	
  	inline void SetRecoilThreshold(G4double eth);
        void        SetHeavyIonCorr(G4int b) {heavycorr=b; };
        G4int       GetHeavyIonCorr() {return heavycorr; };




protected: 

	 
  	inline void DefineMaterial(const G4MaterialCutsCouple*);
  
  	inline void SetupParticle(const G4ParticleDefinition*);



private:


  	// hide assignment operator
  G4IonCoulombScatteringModel & operator=(const G4IonCoulombScatteringModel &right);
  G4IonCoulombScatteringModel(const  G4IonCoulombScatteringModel&);


protected:


  	G4ParticleTable*          theParticleTable;
  	G4ParticleChangeForGamma* fParticleChange; 
  	G4NistManager*            fNistManager;
  	G4IonCoulombCrossSection* ioncross;	  

        const std::vector<G4double>* pCuts;
  	const G4MaterialCutsCouple* currentCouple; 
  	const G4Material*           currentMaterial;
  	const G4Element*            currentElement;
        G4int                       currentMaterialIndex;


	G4int 			  heavycorr;

  	G4double                  cosThetaMin;
  	G4double                  recoilThreshold;
				

	// projectile
  	const G4ParticleDefinition* particle;		
  	const G4ParticleDefinition* theProton;	
  	G4double                  mass;		
 	G4double                  lowEnergyLimit;


private:

  	G4bool                    isInitialised;	

};

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....
void G4IonCoulombScatteringModel::DefineMaterial(const G4MaterialCutsCouple* cup)
{ 
  	if(cup != currentCouple) {
    		currentCouple = cup;
    		currentMaterial = cup->GetMaterial();
                currentMaterialIndex = currentCouple->GetIndex();

  		}
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

inline
void G4IonCoulombScatteringModel::SetupParticle(const G4ParticleDefinition* p)
{
  	if(p != particle) {
    		particle = p;
    		mass = particle->GetPDGMass();
		ioncross->SetupParticle(p);
  		}
}
//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

inline void G4IonCoulombScatteringModel::SetRecoilThreshold(G4double eth)
{
  	recoilThreshold = eth;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo....

#endif