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A thermal oscillating two-stream instabilityA theory for the oscillating two-stream instability, in which the Ohmic heating of the electrons constitutes the nonlinearity, is developed for an inhomogeneous and magnetized plasma. Its possible role in explaining short-scale, field-aligned irregularities observed in ionospheric heating experiments is emphasized. The theory predicts that the initial growth of such irregularities is centered around the level of upper hybrid resonance. Furthermore, plane disturbances nearly parallel to the magnetic meridian plane have the largest growth rates. Expressions for threshold, growth rate, and transverse scale of maximum growth are obtained. Special attention is paid to the transport theory, since the physical picture depends heavily on the kind of electron collisions which dominate. This is due to the velocity dependence of collision frequencies, which gives rise to the thermal forces
Document ID
19830039319
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Dysthe, K. B.
(Tromsoe Univ. Norway)
Mjolhus, E.
(Tromsoe Univ. Norway)
Rypdal, K.
(Tromso, Universitetet Tromso, Norway)
Pecseli, H. L.
(Tromso, Universitetet Tromso, Norway; EURATOM and Forsogsanlaeg Riso, Roskilde, Denmark)
Date Acquired
August 11, 2013
Publication Date
January 1, 1983
Publication Information
Publication: Physics of Fluids
Volume: 26
Subject Category
Plasma Physics
Accession Number
83A20537
Funding Number(s)
CONTRACT_GRANT: NGL-16-001-043
Distribution Limits
Public
Copyright
Other

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