Impact of Saturn ring particles on Pioneer 11

Details Impact of Saturn ring particles on Pioneer 11 Impact of Saturn ring particles on Pioneer 11

Jan 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980sci...207..443h&link_type=abstract

Science, vol. 207, Jan. 25, 1980, p. 443, 444.

Physics

1

Meteoroids, Particle Flux Density, Pioneer 11 Space Probe, Saturn Rings, Space Exploration, Spacecraft Instruments, Optical Thickness, Radial Distribution, Saturn, Rings, Particles, Pioneer 11, Impacts, Flux, Equipment, Optical Properties, Meteoroids, Meteoroid Detection Instrument

Scientific paper

The detection of particles near the rings of Saturn by the meteoroid detection instrument on board Pioneer 11 is discussed. The instrument consists of 234 penetration detectors, distributed between two independent data channels each of which is designed to become inhibited for a period of 77 min after the registration of a penetration event in that channel. At least four particles penetrated the detectors in the 4.5 h period around Saturn periapsis at radial distances between 1.36 and 3.1 Saturn radii, a radial distribution inconsistent with the gravitational focusing of meteoroids. The detection of particles which may have been part of the E ring before the crossing of the ring plane suggests that this ring may be 1800 km thick, with an optical thickness greater than 10 to the -8th.

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