Journal article
Low-frequency electrostatic waves in a magnetized, current-free, heavy negative ion plasma
Journal of plasma physics, Vol.79(6), pp.1107-1111
12/2013
DOI: 10.1017/S0022377813001074
Abstract
We report experimental observations of a low-frequency (≪ ion gyrofrequency) electrostatic wave mode in a magnetized cylindrical (Q machine) plasma containing positive ions, very few electrons and a relatively large fraction (n−/ne > 103) of heavy negative ions (m−/m+ ≈ 10), and no magnetic field-aligned current. The waves propagate nearly perpendicular to B with a multiharmonic spectrum. The maximum wave amplitude coincided spatially with the region of largest density gradient suggesting that the waves were excited by a drift instability in a nearly electron-free positive ion–negative ion plasma
Details
- Title: Subtitle
- Low-frequency electrostatic waves in a magnetized, current-free, heavy negative ion plasma
- Creators
- S H Kim - University of IowaR. L Merlino - University of IowaJ. K Meyer - University of IowaM Rosenberg - University of California, San Diego
- Resource Type
- Journal article
- Publication Details
- Journal of plasma physics, Vol.79(6), pp.1107-1111
- Publisher
- Cambridge University Press
- DOI
- 10.1017/S0022377813001074
- ISSN
- 0022-3778
- eISSN
- 1469-7807
- Number of pages
- 5
- Alternative title
- Low-frequency waves in negative ion plasma
- Language
- English
- Date published
- 12/2013
- Academic Unit
- Molecular Physiology and Biophysics; Physics and Astronomy
- Record Identifier
- 9984199767402771
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