Electron vortex dynamics in an applied shear flow

Journal Article · Sat Apr 15 00:00:00 EDT 1995 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.47904· OSTI ID:21153813

Eggleston, D L ^[1]

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1. Occidental College, Department of Physics, Los Angeles, CA 90041 (United States)

An electron column in a modified Malmberg-Penning trap is used to study the behavior of a single two-dimensional vortex in an imposed irrotational shear flow. Phosphor screen images of the shearing process show a variety of phenomena including the fission of the original vortex, the emission, stretching, and entrainment of filamentary arms, and turbulent diffusion. The vortex lifetime is measured as a function of applied shear, with vortex strength independently adjustable. these data are compared to the predictions of a fluid theory which correctly identifies the key dimensionless parameter (shear rate/vorticity) but not its critical value.

• OSTI ID: 21153813
• Journal Information: AIP Conference Proceedings, Vol. 331, Issue 1; Conference: Non-neutral plasma physics II: Berkeley workshop on non-neutral plasmas in traps, Berkeley, CA (United States), 17-20 Jul 1994; Other Information: DOI: 10.1063/1.47904; (c) 1995 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHARGED-PARTICLE TRANSPORT
DIFFUSION
ELECTRONS
EMISSION
IMAGES
LIFETIME
PLASMA
PLASMA FILAMENT
SHEAR
TRAPS
TWO-DIMENSIONAL CALCULATIONS
VORTICES