NDLI: Observation of plasma motion in a coaxial plasma opening switch with a chordal laser interferometer

Content Provider	IEEE Xplore Digital Library
Author	Teramoto, Y. Kohno, S. Katsuki, S. Akiyama, H.
Copyright Year	1973
Abstract	Electron densities in a coaxial plasma opening switch were measured at many lines-of-sight. In the present experiment, electron density was measured by a He-Ne laser interferometer with chordal lines-of-sight. In order to observe the motion of the plasma opening switch (POS) plasma, the electron density contours during the conduction, opening, and postopening phases were drawn by combining the results of interferometer experiments. The radial and axial motion of POS plasma was investigated from the density contours. As conduction time progressed, the POS plasma moved toward downstream. At 800 ns, which corresponds to the time of opening in the current waveform, low-density region less than 10/sup 15/ cm/sup -2/ is seen at 10 mm from the cathode. After the opening was completed, the low-density gap disappeared and the shape of the corn-shape-like plasma was distorted. The interferometer experiment was followed by the additional spectroscopic experiment. The results of spectroscopic experiment were in good agreement with those of interferometer experiment.
Sponsorship	IEEE Nuclear and Plasma Sciences Society
Starting Page	1886
Ending Page	1892
Page Count	7
File Size	1772628
File Format	PDF
ISSN	00933813
Volume Number	30
Issue Number	5
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2002-10-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Switches Coaxial components Plasma measurements Plasma density Electrons Plasma waves Density measurement Spectroscopy Cathodes Shape
Content Type	Text
Resource Type	Article
Subject	Nuclear and High Energy Physics Condensed Matter Physics

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