Potential Double Layers in Strongly Magnetized Plasmas

  1. S.-I. Akasofu and
  2. J.R. Kan
  1. R. L. Stenzel2,
  2. M. Ooyama1 and
  3. Y. Nakamura1

Published Online: 26 MAR 2013

DOI: 10.1029/GM025p0226

Physics of Auroral Arc Formation

Physics of Auroral Arc Formation

How to Cite

Stenzel, R. L., Ooyama, M. and Nakamura, Y. (1981) Potential Double Layers in Strongly Magnetized Plasmas, in Physics of Auroral Arc Formation (eds S.-I. Akasofu and J.R. Kan), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM025p0226

Author Information

  1. 1

    Institute of Space and Aeronautical Science, University of Tokyo, Komaba, Meguro-Ku, Tokyo, Japan

  2. 2

    Department of Physics, University of California, Los Angeles, California 90024

Publication History

  1. Published Online: 26 MAR 2013
  2. Published Print: 1 JAN 1981

ISBN Information

Print ISBN: 9780875900506

Online ISBN: 9781118664360

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Keywords:

  • Auroras—Addresses, essays, lectures

Summary

Experimental observations on a new potential double layer in a collisionless magnetoplasma are presented. The double layer is formed when an ion beam is injected along converging field lines and reflected at a boundary drawing electron saturation current. The double layer is detached from the boundaries, V-shaped for magnetized ions, establishes its potential self-consistently to the beam potential (Φd ≲ Vb), is stationary over a wide potential range (1 ≲ eΦd/kTe ≲ 25), and is produced free from ionization effects. Distribution functions measured on the high potential side show drifting Maxwellians subject to the Buneman instability (vd/ve > 1) and self-consistently produced trapped particles.