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Coagulation of particles in Saturn's rings - Measurements of the cohesive force of water frostExperimental data are presented on the sticking force of water ice particles which are indicative of the role that the cohesive properties of such particles could play in the dynamics of Saturn ring particles. Sticking forces are dependent on particle impact velocities; a 'Velcro' model is devised to describe the surface structure involved in sticking. The data indicate that below the critical impact velocity of about 0.03 cm/sec, particle cohesion always occurs. Due to the optical depth of micron-sized grains in the Saturn rings, particles are hypothesized to be coated with a layer of frost which will render cohesion an important ring-dynamics process.
Document ID
19910038961
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Hatzes, A. P.
(California, University Santa Cruz; McDonald Observatory, Austin, TX, United States)
Bridges, F.
(California Univ. Santa Cruz, CA, United States)
Lin, D. N. C.
(California Univ. Santa Cruz, CA, United States)
Sachtjen, S.
(California, University Santa Cruz, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Publication Information
Publication: Icarus
Volume: 89
ISSN: 0019-1035
Subject Category
Lunar And Planetary Exploration
Accession Number
91A23584
Funding Number(s)
CONTRACT_GRANT: NAGW-590
Distribution Limits
Public
Copyright
Other

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