G4VhElectronicStoppingPower Class Reference

#include <G4VhElectronicStoppingPower.hh>

Inheritance diagram for G4VhElectronicStoppingPower:

Public Member Functions
	G4VhElectronicStoppingPower ()
virtual	~G4VhElectronicStoppingPower ()
virtual G4double	StoppingPower (const G4Material *material, G4double kineticEnergy)=0
virtual G4bool	HasMaterial (const G4Material *material)=0
virtual G4double	ElectronicStoppingPower (G4double z, G4double kineticEnergy) const =0

Protected Member Functions
G4double	HeEffChargeSquare (const G4double z, const G4double kineticEnergyHe) const
G4double	GetHeMassAMU () const

Detailed Description

Definition at line 59 of file G4VhElectronicStoppingPower.hh.

Constructor & Destructor Documentation

G4VhElectronicStoppingPower::G4VhElectronicStoppingPower

(

)

Definition at line 57 of file G4VhElectronicStoppingPower.cc.

                                                        :
   theHeMassAMU(4.0026)
{;}

G4VhElectronicStoppingPower::~G4VhElectronicStoppingPower ( )

virtual

Definition at line 63 of file G4VhElectronicStoppingPower.cc.

{;}

Member Function Documentation

virtual G4double G4VhElectronicStoppingPower::ElectronicStoppingPower ( G4double  z, G4double  kineticEnergy  ) const

pure virtual

Implemented in G4hICRU49p, G4hZiegler1985p, G4hICRU49He, and G4hSRIM2000p.

G4double G4VhElectronicStoppingPower::GetHeMassAMU ( ) const

inlineprotected

Definition at line 85 of file G4VhElectronicStoppingPower.hh.

Referenced by HeEffChargeSquare().

{return theHeMassAMU;};

virtual G4bool G4VhElectronicStoppingPower::HasMaterial ( const G4Material *  material )

pure virtual

Implemented in G4hICRU49p, G4hZiegler1985p, G4hICRU49He, and G4hSRIM2000p.

G4double G4VhElectronicStoppingPower::HeEffChargeSquare ( const G4double  z, const G4double  kineticEnergyHe  ) const

protected

Definition at line 68 of file G4VhElectronicStoppingPower.cc.

References test::c, GetHeMassAMU(), python.hepunit::keV, G4INCL::Math::max(), test::x, and z.

Referenced by G4hICRU49He::ElectronicStoppingPower(), and G4hICRU49He::StoppingPower().

{
  // The aproximation of He effective charge from: 
  // J.F.Ziegler, J.P. Biersack, U. Littmark
  // The Stopping and Range of Ions in Matter,
  // Vol.1, Pergamon Press, 1985

  static const G4double c[6] = {0.2865,  0.1266, -0.001429,
                0.02402,-0.01135, 0.001475} ;

  G4double e = std::log( std::max( 1.0, kineticEnergyHe/(keV*GetHeMassAMU()))) ; 
  G4double x = c[0] ;
  G4double y = 1.0 ;
  for (G4int i=1; i<6; i++) {
    y *= e ;
    x += y * c[i] ;
  }

  G4double w = 7.6 -  e ;
  w = 1.0 + (0.007 + 0.00005*z) * std::exp( -w*w ) ;
  w = 4.0 * (1.0 - std::exp(-x)) * w * w ;
  return w;
}

virtual G4double G4VhElectronicStoppingPower::StoppingPower ( const G4Material *  material, G4double  kineticEnergy  )

pure virtual

Implemented in G4hICRU49p, G4hZiegler1985p, G4hICRU49He, and G4hSRIM2000p.

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The documentation for this class was generated from the following files:

• G4VhElectronicStoppingPower.hh
• G4VhElectronicStoppingPower.cc