Particle size distributions in Saturn's rings from Voyager 1 radio occultation

Details Particle size distributions in Saturn's rings from Voyager 1 radio occultation Particle size distributions in Saturn's rings from Voyager 1 radio occultation

May 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983icar...54..189m&link_type=abstract

(Saturn Conference, Tucson, AZ, May 11-15, 1982) Icarus (ISSN 0019-1035), vol. 54, May 1983, p. 189-211. NASA-supported research

Physics

113

Particle Size Distribution, Radio Occultation, Saturn Rings, Signal Transmission, Voyager 1 Spacecraft, Mass Distribution, Opacity, Radio Scattering, Vertical Distribution, Saturn, Rings, Particles, Size, Distribution, Radio Observations, Occultations, Voyager 1

Scientific paper

Information on Saturn ring particle sizes obtained with the Voyager 1 ring occultation experiment is discussed. The theory underlying the determination of the particle size distribution is presented, including differential extinction and inversion of the scattered signal. Experimental observations and results for the observed spectra, differential cross sections, suprameter and sub- to suprameter size distributions are presented. The size and mass distributions both cut off sharply at about 4-5 m; the mass distribution peaks over the 3-4 m size range for four ring system features at 1.35, 1.51, 2.01, and 2.12 Saturn radii. A power-law type model is consistent with the data over a limited size range of 0.01 to 1 m. The fractional contribution of the suprameter particles to the microwave opacity for the four features appears to be about 1/3, 1/3, 2/3, and 1, respectively, and their cumulative surface mass per unit area are about 11, 16, 41, and 132 g/sq cm if the particles are solid water ice.

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