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Title: Electron plasma dynamics during autoresonant excitation of the diocotron mode

Chirped-frequency autoresonant excitation of the diocotron mode is used to move electron plasmas confined in a Penning-Malmberg trap across the magnetic field for advanced plasma and antimatter applications. Plasmas of 10{sup 8} electrons, with radii small compared to that of the confining electrodes, can be moved from the magnetic axis to ≥90% of the electrode radius with near unit efficiency and reliable angular positioning. Translations of ≥70% of the wall radius are possible for a wider range of plasma parameters. Details of this process, including phase and displacement oscillations in the plasma response and plasma expansion, are discussed, as well as possible extensions of the technique.
Authors:
; ; ;  [1]
  1. Physics Department, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093 (United States)
Publication Date:
OSTI Identifier:
22408085
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 22; Journal Issue: 2; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ANTIMATTER; DYNAMICS; ELECTRODES; ELECTRONS; EXCITATION; MAGNETIC FIELDS; OSCILLATIONS; PLASMA; PLASMA EXPANSION