DocumentCode
1504386
Title
High-Frequency Instabilities in Sheaths and Fireballs
Author
Stenzel, Reiner ; Gruenwald, Johannes ; Ionita, Codrina ; Schrittwieser, Roman
Author_Institution
Dept. of Phys. & Astron., Univ. of California, Los Angeles, CA, USA
Volume
39
Issue
11
fYear
2011
Firstpage
2448
Lastpage
2449
Abstract
Electron inertia causes a delay between high-frequency currents and electric fields. When the transit time of a bunch of streaming electrons equals one RF period, the electrons can enhance the field and produce oscillations. Here, electron transit-time instabilities have been observed in magnetized sheaths and fireballs. Novel fireballs trapped in a gridded hollow anode have been developed. These produce large-amplitude RF oscillations.
Keywords
high-frequency discharges; plasma instability; plasma oscillations; plasma sheaths; plasma transport processes; RF oscillations; electron inertia; high-frequency current; high-frequency instability; magnetized fireballs; magnetized sheaths; plasma sheaths; streaming electrons; transit time; Electrodes; Oscillators; Plasmas; Radio frequency; Resonant frequency; Time frequency analysis; Wire; Electron beams; plasma sheaths; plasma stability;
fLanguage
English
Journal_Title
Plasma Science, IEEE Transactions on
Publisher
ieee
ISSN
0093-3813
Type
jour
DOI
10.1109/TPS.2011.2129535
Filename
5756248
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