Effect of Ion-Induced Electrons Emission on the Plasma Sheath Voltage

Authors

  • R Khanal Central Department of Physics, Tribhuvan University, Kiripur, Kathmandu

DOI:

https://doi.org/10.3126/sw.v6i6.2625

Keywords:

Plasma, Quasineutrality, Debye Shielding, Sheath, Presheath, Bohm criterion

Abstract

The effect of ion-induced electrons emission on the plasma sheath voltage for different values of ion induced electrons emission coefficients has been studied. Using a Kinetic Trajectory Simulation model of plasma sheaths, we calculate the particle densities reaching the wall and for given ion induced electrons emission coefficient the additional electrons emitted from the wall is obtained. Finally, the plasma sheath voltage (wall potential) is obtained by solving the Poisson equation. It has been observed that the potential decreases as the ion-induced electron emission coefficient increases as expected theoretically.

Key words: Plasma; Quasineutrality; Debye Shielding; Sheath; Presheath; Bohm criterion.

DOI: 10.3126/sw.v6i6.2625

Scientific World, Vol. 6, No. 6, July 2008 4-7

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How to Cite

Khanal, R. (2010). Effect of Ion-Induced Electrons Emission on the Plasma Sheath Voltage. Scientific World, 6(6), 4–7. https://doi.org/10.3126/sw.v6i6.2625

Issue

Vol. 6 No. 6 (2008)

Section

Articles