NDLI: Analyses of molecular and neutral atomic emission spectra from an electrothermal launcher plasma

Content Provider	IEEE Xplore Digital Library
Author	Hankins, O.E. Mann, D.
Copyright Year	1965
Abstract	Analyses of neutral atomic copper line and C/sub 2/ Swan Band (d/sup 3//spl Pi/-a/sup 3//spl Pi/) emission in the 420 to 570 nm spectral region from the experimental electrothermal launcher device "SIRENS" have been performed to determine edge and core plasma densities and temperatures. Time-averaged core arc temperatures of 10,000 to 22,000 /spl deg/K and arc densities of 7/spl times/10/sup 23/ to 2/spl times/10/sup 24/ m/sup -3/ have been deduced by measurements along the axis of the device using the relative intensities and the Stark broadening of the copper lines. The observed C/sub 2/ band spectra were compared with synthetic spectra calculated using a molecular spectra-radiative transport code. At a discharge energy of 1.56 kJ, for 90/spl deg/ aspect, the C/sub 2/ temperature was determined to be about 3500 /spl deg/K, with a column density of 2/spl times/10/sup 21/ m/sup -2/. On-axis spectra, at a discharge energy of 1.07 kJ, were found to correspond to a C/sub 2/ temperature of about 7500 /spl deg/K and a column density of 7/spl times/10/sup 20/ m/sup -2/. Because of the lower temperatures, it is believed that the C/sub 2/ emission comes from the plasma edge.<>
Sponsorship	IEEE Magnetics Society
Starting Page	410
Ending Page	413
Page Count	4
File Size	413534
File Format	PDF
ISSN	00189464
Volume Number	31
Issue Number	1
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Electrothermal launching Plasma temperature Plasma measurements Plasma density Plasma devices Plasma diagnostics Density measurement Plasma accelerators Stimulated emission Atomic measurements
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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