PIC Source - Field Emission Properties

Simulation: Sources and LoadsParticle SourcesParticle Source on PECFieldEdit
Simulation: Sources and LoadsParticle SourcesParticle Source on any SurfaceFieldEdit
Simulation: Sources and LoadsParticle SourcesParticle Point SourceFieldEdit
Simulation: Sources and LoadsParticle SourcesParticle Circular SourceFieldEdit

The field emission parameters for a charged particle beam can be specified within this dialog box.

 

The emission energy of the particles is calculated from the electric field close to the cathode. In some cases the particles are accelerated due to additional physical effects, for example when a cathode is heated. To consider these effects, it is possible to define additional kinetic settings. The total emission energy is the sum of both independent energies.

 

Additional kinetic settings

In this section, the kinetic emission settings can be entered. For further details open the Kinetic Particle Settings page.

Fowler Nordheim settings

In this section, the field emission settings can be entered. Have also a look at the Fowler Nordheim equation below:

Scaling factor (a)
Select the factor a of the Fowler Nordheim equation. The constant a has to be greater than zero.

Exp. factor (b)
Select the factor b of the Fowler Nordheim equation. The constant b has to be greater than zero.

See also

Define Particle Sources, Particle Source Emission Model Overview, Kinetic Particle Settings