Double Layers in the Laboratory and Above the Aurora

  1. S.-I. Akasofu and
  2. J.R. Kan
  1. Lars P. Block

Published Online: 26 MAR 2013

DOI: 10.1029/GM025p0218

Physics of Auroral Arc Formation

Physics of Auroral Arc Formation

How to Cite

Block, L. P. (1981) Double Layers in the Laboratory and Above the Aurora, in Physics of Auroral Arc Formation (eds S.-I. Akasofu and J.R. Kan), American Geophysical Union, Washington, D. C.. doi: 10.1029/GM025p0218

Author Information

  1. Department of Plasma Physics, Royal Institute of Technology, S-100 44 Stockholm, Sweden

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

Recent laboratory double layer experiments have simulated, much better than before, the conditions prevailing on auroral field lines at high altitudes. In particular, magnetic fields strong enough to magnetize the electrons (but not quite the ions) have been used. Particle and wave spectra have been measured. Wave-particle interaction has been shown to play a minor role in the only case that has been quantitatively analyzed. The three-dimensional potential distribution has been mapped. The particle budget requires the radial electric field to be outward in the no magnetic field case but inward with magnetic field, in agreement with what is observed above the aurora.