Motion of extended vortices in an inhomogeneous pure electron plasma
نویسندگان
چکیده
منابع مشابه
Characteristic parameters of drift vortices coupled to Alfvén waves in an inhomogeneous space plasma.
We present detailed measurements of ion scale vortices of drift type coupled to Alfvén waves in an inhomogeneous and collisionless space magnetoplasma. The two free parameters of a dipolar vortex, intensity and spatial radius, are measured. The vortices are driven by a strong density gradient on a boundary layer with scale size of the same order as the vortex diameter. Observations of vortices ...
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Experimental images illustrate spatial Landau damping of an externally launched diocotron mode, and the resulting echo from a second externally launched wave. Filaments at the resonance layer exhibit spiral wind-up during the collisionless damping process, and “unwind” during the echo formation.
متن کاملPhase mixing and echoes in a pure electron plasma
The two-dimensional s2Dd fluid echo is a spontaneous appearance of a diocotron wave after two externally excited waves have damped away, explicitly demonstrating the reversible nature of spatial Landau damping. The inviscid damping, or phase mixing, is directly imaged by a low-noise charge-coupled device camera, which shows the spiral wind-up of the density perturbation. Surprisingly, the basic...
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ژورنال
عنوان ژورنال: Physics of Plasmas
سال: 2000
ISSN: 1070-664X,1089-7674
DOI: 10.1063/1.874135