Cosmic dust collection by the capture cell technique on the Space Shuttle

Details Cosmic dust collection by the capture cell technique on the Space Shuttle Cosmic dust collection by the capture cell technique on the Space Shuttle

May 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984natur.309..237m&link_type=abstract

Nature (ISSN 0028-0836), vol. 309, May 17, 1984, p. 237-240. Research supported by the Science and Engineering Research Council.

Physics

14

Cosmic Dust, Experiment Design, Interplanetary Dust, Space Shuttle Payloads, Spaceborne Experiments, Hypervelocity Impact, Long Duration Exposure Facility, Microparticles, Particle Size Distribution, Perforating, Space Transportation System Flights

Scientific paper

Results of the Microabrasion Foil Experiment (MFE) to collect cosmic dust on board the Space Shuttle are reported. The experiment used a capture cell to collect microparticles by avoiding selection effects introduced by the deceleration of the particles in the earth's atmosphere. Four hypervelocity impact events were recorded over the eight days of the experiment, yielding one large (23 microns in diameter), and three near-marginal perforations (5.1, 6.5, and 5.7 microns in diameter, respectively). The evidence confirmed the effectiveness of the capture cell technique as a method for the assessment of the near-earth particulate environment. A meteroid bumper to dissipate particle energy was also found to be effective. The morphology of the perforations are discussed, and it is concluded that the current near-earth microparticle influx model should be revised to account for unexplained morphologies.

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