Journal Article10.1029/91JA02431
Observations of VHF emissions from 50-mA electron beam injections in the ionosphere that are associated with beam-induced discharges
R. T. Goerke,Paul J. Kellogg,Steven J. Monson,R. C. Franz,R. J. Nemzek,H. R. Anderson,D. W. Potter,W. F. Denig,E. P. Szuszczewicz,G. D. Earle +9 more
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TL;DR: In this article, the emission spectra of the electron beam for various energies and currents were obtained from the rocket-borne experiment SCEX 3, NASA flight 39.002 UE, launched February 1, 1990.
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Abstract: Results are presented of observations of strong VHF plasma waves with amplitudes in excess of 0.1 mV/m (Hz)1/2 associated with 50 mA electron beam injections in the ionosphere. Data from three swept-frequency receivers carried on two daughter payloads are analyzed to determine the emission spectra of the electron beam for various energies and currents. These results were obtained from the rocket-borne experiment SCEX 3, NASA flight 39.002 UE, launched February 1, 1990. The accelerator payload also carried photometers, which measured luminosity at wavelengths of 391.4 and 380.5 nm. Several times during electron gun activity the measured luminosity increased much faster than proportional to the beam current. This nonlinear increase is evidence that a discharge is occurring in the vicinity of the accelerator payload. It is inferred from the uniform distribution of the luminosity around the accelerator payload that the observed discharge extends significantly outside the beam cylinder.
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Citations
Artificial Aurora Experiments and Application to Natural Aurora
TL;DR: In this paper, a review of the effects observed during injections of powerful electron beams from sounding rockets into the upper atmosphere is given, where data come from in situ particle and wave measurements near a beam emitting rocket and ground-based optical, wideband radiowave, and radar observations.
Whistler excitation by electron beams in laboratory plasmas
C. Krafft,M. Starodubtsev +1 more
TL;DR: In this paper, a review of laboratory experiments devoted to electron beam interaction with waves in magnetized plasmas, in physical conditions relevant to natural space phenomena or controlled experiments involving artificial beam injection is presented.
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Observations of diffuse resonance emissions from low‐current electron beam injections in the auroral zone ionosphere
TL;DR: In this paper, the authors report on a rocket borne experiment, SCEX 3, which was carried to an ionospheric height of 375 km on Feb 1, 1990, and observe the plasma waves between the plasma frequency and the upper hybrid frequency.
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Electrical charging of space platforms at low Earth orbit altitudes
TL;DR: In this paper, the authors adopt the definition that low-earth-orbit (LEO) altitudes span the range 270 - 1000 km above the surface of the Earth and that free charges exist in the form of the ionospheric plasma.
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Optical observations of the beam-plasma discharge phenomenon
TL;DR: In this article, spectroscopic observations of optical emissions from the beam-plasma discharge (BPD) phenomenon were made with NASA's vacuum chamber facility, at the Johnson Space Center, configured to simulate the physical conditions of magnetospheric electron beam injection into the ionospheric/upper-atmospheric environment.
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