Exponential growth of an unstable [ital l]=1 diocotron mode for a hollow electron column in a warm-fluid model

Journal Article · Mon Mar 01 00:00:00 EST 1993 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860512· OSTI ID:6817131

Rasband, S N; Spencer, R L; Vanfleet, R R ^[1]

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1. Department of Physics and Astronomy, Brigham Young University, Provo, Utah 84602 (United States)

Numerical investigations of a warm-fluid model with an isothermal equation of state for the perpendicular dynamics of an axisymmetric, magnetically confined pure electron plasma predict an exponentially unstable, [ital l]=1, diocotron mode for hollow density profiles. The unstable mode can be identified with a stable, nonsmooth mode that exists in cold drift models but which is destabilized by finite temperature effects. The unstable mode has many properties similar to the experimental results reported by Driscoll [Phys. Rev. Lett. [bold 64], 645 (1990)].

• OSTI ID: 6817131
• Journal Information: Physics of Fluids B; (United States), Vol. 5:3; ISSN 0899-8221
• Country of Publication: United States
• Language: English

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