Double Layer Dynamics in a Collisionless Magnetoplasma

Satoru Iizuka, Poul Michelsen, Jens Juul Rasmussen, Roman Schrittwieser, Rikizo Hatakeyama, Koichi SAEKi, Noriyoshi Sato

Research output: Contribution to journalArticlepeer-review

61 Citations (Scopus)


Investigations of double layer dynamics are performed in a Q-machine plasma by applying a positive step potential to a cold end-plate collector. The double layer created at the grounded plasma source just after the pulse is applied propagates towards the collector with the plasma flow speed. Large oscillations occur in the plasma current which is related to a recurring formation and propagation of the double layer. The current is limited during the propagation by a growing negative potential dip formed on the low-potential tail. Similar phenomena appear on the low-potential tail of the stationary double layer formed by applying a potential difference between two plasma sources.

Original languageEnglish
Pages (from-to)2516-2529
Number of pages14
Journaljournal of the physical society of japan
Issue number7
Publication statusPublished - 1985
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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