Laboratory simulation of the interaction effects of intense electron fluxes with a neutral atmosphere

Details Laboratory simulation of the interaction effects of intense electron fluxes with a neutral atmosphere Laboratory simulation of the interaction effects of intense electron fluxes with a neutral atmosphere

Sep 1975

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1975kosis..13..730k&link_type=abstract

Kosmicheskie Issledovaniia, vol. 13, Sept.-Oct. 1975, p. 730-737. In Russian.

Physics

Electron Beams, Magnetohydrodynamic Stability, Particle Interactions, Upper Atmosphere, Atmospheric Models, Electron Energy, Plasma Jets, Plasma Oscillations, Plasma Spectra

Scientific paper

The interaction of intense electron fluxes of moderate energy (1 to 10 keV) with a neutral gas is studied experimentally under conditions simulating those for the initiation of polar auroras. A beam plasma discharge is observed within a definite gas pressure range (0.01 to 0.001 torr) due to the generation of high-frequency fields during the development of electron beam instability in the primary plasma. This results in the formation of a local plasma structure with a maximum concentration exceeding that of the electrons in the stream by 2 to 3 orders of magnitude, and with a configuration and dimensions determined by the beam parameters and the gas pressure. The spectrum of the oscillations generated in the plasma is examined. Also discussed is the similarity of the phenomena observed experimentally to those occurring during natural and artificial injection of electrons into the upper atmosphere.

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