Langmuir probe analysis of highly electronegative plasmas
- Laboratoire de Physique des Plasmas, Ecole Polytechnique, Palaiseau (France)
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 {alpha} (negative ion to electron density ratio) up to 3000, and the temperature of negative and positive ions is obtained for {alpha} 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.
- OSTI ID:
- 22162852
- Journal Information:
- Applied Physics Letters, Vol. 102, Issue 15; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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