Rotationally convected drift wave instability in an inhomogeneous plasma column

R. V. Aldridge, B. E. Keen

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16 Citations (Scopus)


This rotation is associated with an azimuthal drift arising from the existence of a radial electric field and a longitudinal magnetic field. The observed oscillation frequency appears to be related to the rotational frequency. The methods of measurement of both the instability and the rotational frequency are discussed. A theory is developed based on the two-fluid equations in slab geometry, in which an electric field parallel to the direction of the density variation and perpendicular to a magnetic field is considered. Collisions of the ions with neutrals are also taken into account. The theoretical predictions are then compared with the experimental observations; relatively good agreement with the measurements is obtained.
Original languageEnglish
Pages (from-to)1-16
Number of pages16
JournalPlasma Physics
Issue number1
Publication statusPublished - 1970

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