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// $Id: G4ICRU49NuclearStoppingModel.hh 100399 2016-10-20 07:38:12Z gcosmo $
//
// -------------------------------------------------------------------
//
//
// GEANT4 Class header file
//
//
// File name:     G4ICRU49NuclearStoppingModel
//
// Author:        V.Ivanchenko 
//
// Creation date: 20.07.2009 
//
// Modifications:
//
//
// Class Description:
//
// Implementation of the ICRU'49 model of nuclear stopping 

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

#ifndef G4ICRU49NuclearStoppingModel_h
#define G4ICRU49NuclearStoppingModel_h 1

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

#include "G4VEmModel.hh"

class G4ParticleChangeForLoss;
class G4Pow;

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

class G4ICRU49NuclearStoppingModel : public G4VEmModel
{

public:

  explicit G4ICRU49NuclearStoppingModel(const G4String& nam = 
					"ICRU49NucStopping");

  virtual ~G4ICRU49NuclearStoppingModel();

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

  // main method to compute dEdx
  virtual G4double ComputeDEDXPerVolume(const G4Material*,
                                        const G4ParticleDefinition*,
                                        G4double kineticEnergy,
                                        G4double cutEnergy = DBL_MAX) final;

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

  inline void SetFluctuationFlag(G4bool);

private:

  G4double NuclearStoppingPower(G4double kineticEnergy,
				G4double Z1, G4double Z2,
				G4double A1, G4double A2);

  //  hide assignment operator
  G4ICRU49NuclearStoppingModel & operator=
  (const  G4ICRU49NuclearStoppingModel &right) = delete;
  G4ICRU49NuclearStoppingModel(const  G4ICRU49NuclearStoppingModel&) = delete;

  G4Pow* g4calc;

  G4double theZieglerFactor;

  // flags
  G4bool   lossFlucFlag;
};

inline void G4ICRU49NuclearStoppingModel::SetFluctuationFlag(G4bool val)
{
  lossFlucFlag = val;
}

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#endif

