Plasma wave turbulence around the shuttle - Results from the Spacelab-2 flight

Details Plasma wave turbulence around the shuttle - Results from the Spacelab-2 flight Plasma wave turbulence around the shuttle - Results from the Spacelab-2 flight

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988georl..15..760g&link_type=abstract

Geophysical Research Letters (ISSN 0094-8276), vol. 15, Aug. 1988, p. 760-763.

Physics

24

Plasma Diagnostics, Plasma Turbulence, Space Plasmas, Space Shuttles, Spacelab Payloads, Electric Fields, Plasma Waves, Spectrograms

Scientific paper

During the Spacelab-2 flight, which occurred from July 29, to August 6, 1985, a spacecraft called the Plasma Diagnostics Package (PDP) was released from the shuttle to explore the plasma environment around the shuttle. The plasma wave instrument on the PDP detected a region of intense broadband turbulence around the shuttle at frequencies extending from a few Hz to about 10 kHz. The noise has broadband intensities ranging from 1 to 5 mV/m and was observed at distances of up to 400 m from the shuttle. The highest intensities occurred in the region downstream of the shuttle and along magnetic field lines passing near the shuttle. The intensities also tended to increase during periods of high thruster activity, which provides strong evidence that the noise is caused by an interaction of the ionosphere with gaseous emissions from the shuttle, similar in many respects to the interaction of a comet with the solar wind. Antenna interference patterns observed in the wideband data show that the wavelength of the turbulence is very short, a few meters or less.

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