Electron beam emission from the EXOS-B (JIKIKEN) satellite as a powerful diagnostic tool in the magnetosphere

Details Electron beam emission from the EXOS-B (JIKIKEN) satellite as a powerful diagnostic tool in the magnetosphere Electron beam emission from the EXOS-B (JIKIKEN) satellite as a powerful diagnostic tool in the magnetosphere

Nov 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984ap%26ss.106..117k&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 106, no. 1, Nov. 1984, p. 117-123.

Computer Science

Sound

Beam Injection, Earth Magnetosphere, Electron Beams, Exos-B Satellite, Plasma Diagnostics, Satellite Sounding, Space Plasmas, Electron Guns, Geomagnetism, Japanese Spacecraft, Plasma Density, Plasma Waves, Plasma-Particle Interactions, Satellite-Borne Instruments

Scientific paper

The use of a satellite-borne low-power electron beam to measure plasma density and magnetic-field strength in the magnetosphere is demonstrated using data from the Japanese EXOS-B satellite. The EXOS-B electron gun is a Pierce-type axisymmetric parallel-beam gun with Wehnert electrode; 5-mm exit diameter; divergence 0.3 rad; 16-kHz 2.9-W power supply; beam current adjustable to 250, 500, 750, or 1000 microA; and beam voltage adjustable to -100, -125, -150, or -200 V. Receiver equipment includes a 110-m dipole antenna and a frequency analyzer with range 10 kHz to 3 MHz, bandwidth 5 kHz, and period 2 or 8 sec. Sample spectra and density profiles are shown, and it is found that plasma densities to the order of 10/cu cm can be measured.

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