Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published November 21, 1994 | Published
Journal Article Open

Damping and Trapping in 2D Inviscid Fluids


We demonstrate collisionless decay due to phase mixing of a disturbance in an inviscid 2D fluid with sheared flow. Experiments performed on a cylindrical pure electron plasma, which behaves as a 2D inviscid fluid, show that a small amplitude quadrupole excitation (m = 2, k = 0 mode) decays exponentially. At larger amplitudes, the exponential decay is modulated by bounce motion of fluid elements trapped in the azimuthally traveling wave field, with the bounce frequency proportional to the square root of the excitation amplitude. We also show that the linear decay rate is decreased by the addition of external dissipation. We describe a calculation of the linearized response function.

Additional Information

©1994 The American Physical Society Received 6 July 1993; revised 11 August 1994 This work was supported by ONR Grant No. N00014-89-J-1264.

Attached Files

Published - PILprl94.pdf


Files (830.7 kB)
Name Size Download all
830.7 kB Preview Download

Additional details

August 22, 2023
August 22, 2023