G4IonCoulombScatteringModel.hh

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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

---