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A laboratory study of collisional electrostatic ion cyclotron wavesThe effects of neutral-particle collisions on electrostatic ion cyclotron instability are analyzed. Experiments were conducted in the Q machine of Motley (1975) with a cesium plasma in which the neutral gas pressure in the main chamber varied from about 5 microtorr-10 mtorr. The relation between electrostatic ion cyclotron wave amplitude and frequency and neutral argon pressure is examined. It is observed that over the full range of neutral pressure the frequency changes by less than 10 percent and the ion cyclotron waves continue to be excited and reach amplitudes of at least several percent at values of the neutral pressure where the ion-neutral collision frequency/ion gyrofrequency is about 0.3.
Document ID
19870039742
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Suszcynsky, D. M.
(Iowa Univ. Iowa City, IA, United States)
Cartier, S. L.
(Iowa Univ. Iowa City, IA, United States)
Merlino, R. L.
(Iowa Univ. Iowa City, IA, United States)
Dangelo, N.
(Iowa, University Iowa City, United States)
Date Acquired
August 13, 2013
Publication Date
December 1, 1986
Publication Information
Publication: Journal of Geophysical Research
Volume: 91
ISSN: 0148-0227
Subject Category
Plasma Physics
Accession Number
87A27016
Funding Number(s)
CONTRACT_GRANT: NGL-16-001-043
Distribution Limits
Public
Copyright
Other

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