Analytic Approximate for the Plasma Sheath Potential

Here a new analytic approximation for the Bhom Sheath Potential is presented, which is valid for any value of the characteristic parameter K, measuring the mean ion velocity. The procedure to obtain this approximation is different to those used by previous authors, because now, the characteristic ex...

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Bibliographic Details
Published in:Journal of physics. Conference series 2016-05, Vol.720 (1), p.12040
Main Authors: Martin, Pablo, Maass-Artigas, Fernando, Cortés-Vega, Luis
Format: Article
Language:English
Subjects:
Approximation
Electric potential
Ion velocity
Mathematical analysis
Parameters
Physics
Plasma sheaths
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Summary:Here a new analytic approximation for the Bhom Sheath Potential is presented, which is valid for any value of the characteristic parameter K, measuring the mean ion velocity. The procedure to obtain this approximation is different to those used by previous authors, because now, the characteristic exponential parameter λ, depends on the parameter K, as well as the wall potential φw. In previous works that parameter used to be function of K only, and all the approximation used to fail for K ≤ 1 2, which is not the case now.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/720/1/012040