Langmuir probe analysis of highly electronegative plasmas
- 15 April 2013
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 102 (15), 154107
- https://doi.org/10.1063/1.4802252
Abstract
A Langmuir probe analysis of highly electronegative plasmas is proposed. Analytical models are used to fit the IV-characteristics and their second derivatives above and below the plasma potential. Ion and electron densities are obtained for α (negative ion to electron density ratio) up to 3000, and the temperature of negative and positive ions is obtained for α ranging from 100 to 3000. The transport across a localized magnetic barrier is studied using this technique. It is shown that an ion-ion (electron free) plasma is formed downstream from the barrier at the highest magnetic field.Keywords
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