Ultraviolet-Visible Imagery and Spectra of the Fluxus-1 and -2 Artificial Plasma Jets

Details Ultraviolet-Visible Imagery and Spectra of the Fluxus-1 and -2 Artificial Plasma Jets Ultraviolet-Visible Imagery and Spectra of the Fluxus-1 and -2 Artificial Plasma Jets

Nov 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998sct..conf...13e&link_type=abstract

Proceedings of the 6th Spacecraft Charging Conference. November 2-6, 1998. AFRL Science Center, Hanscom AFB, MA, USA., p.13-16

Physics

Scientific paper

Two active geophysical rocket experiments, known as Fluxus-1 and Fluxus-2, were conducted to study the interaction of artificial aluminum plasma jets with the ionosphere. The plasma jets were generated at night without the aid of solar illumination using specially designed shaped-charge generators. In this paper we present observations from the space-based ultraviolet and visible sensors on the Midcourse Space Experiment (MSX) satellite. Spectrographic imagers on MSX were used to acquire an ultraviolet and visible spectrum of the shaped-charge event and plasma jet evolution. The spectrum contained Al II (Al+) line emissions, Al I line emissions, continuum emissions due to AlO formed through reactions of Al dimers (Al)x with atomic oxygen, and atmospheric emissions associated with O I and O II. The atmospheric emission features persisted for a few seconds while the Al I and II features were observed during the first frame (0.5s). The plasma jet evolved into a long-lasting luminous plasma cloud that was observed for over 70s from MSX and 3 minutes on the ground. The source of this cloud is most likely emissions from HAlOH.

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