Potential Double Layers in Strongly Magnetized Plasmas
- S.-I. Akasofu and
- J.R. Kan
Published Online: 26 MAR 2013
Copyright 1981 by the American Geophysical Union.
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
- Published Online: 26 MAR 2013
- Published Print: 1 JAN 1981
Print ISBN: 9780875900506
Online ISBN: 9781118664360
- Auroras—Addresses, essays, lectures
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.