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Very energetic protons in Saturn's radiation beltVery energetic protons are trapped in the inner Saturnian radiation belt. The University of California at San Diego instrument on Pioneer 11 has definitely identified protons of energy greater than 80 MeV on channel M3 and has tentatively detected protons of energy greater than 600 MeV on channel C3. The spatial distribution of the protons is distinct from that of the trapped electrons, the main difference being that the protons are strongly absorbed by the innermost moons and that the electrons are not. The source strength for injecting protons by the decay of cosmic ray albedo neutrons generated in the rings of Saturn has been estimated. The required proton lifetime is approximately 20 years.
Document ID
19810030259
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Fillius, W.
(California Univ. La Jolla, CA, United States)
Mcilwain, C.
(California, University La Jolla, Calif., United States)
Date Acquired
August 11, 2013
Publication Date
November 1, 1980
Publication Information
Publication: Journal of Geophysical Research
Volume: 85
Subject Category
Lunar And Planetary Exploration
Accession Number
81A14663
Funding Number(s)
CONTRACT_GRANT: NGL-05-005-007
CONTRACT_GRANT: NAS2-6552
Distribution Limits
Public
Copyright
Other

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