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Ion bombardment of interplanetary dustIt is thought that a fraction of the interplanetary dust particles (IDP's) collected in the stratosphere by high-flying aircraft represent materials ejected from comets. An investigation is conducted regarding the effects of ion bombardment on these particles, taking into account information on ion tracks and carbon in IDP's and laboratory data on charged particle bombardment of surfaces. It is found that the observational discovery of particle tracks in certain IDP's clearly indicates the exposure of these particles to approximately 10,000 years of 1-AU equivalent solar-particle fluences. If some erasure of the tracks occurs, which is likely when an IDP enters the upper atmosphere, then somewhat longer times are implied. The effects of the erosion and enhanced adhesion produced by ions are considered.
Document ID
19860063127
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Johnson, R. E.
(Virginia, University Charlottesville, United States)
Lanzerotti, L. J.
(AT&T Bell Laboratories Murray Hill, NJ, United States)
Date Acquired
August 12, 2013
Publication Date
June 1, 1986
Publication Information
Publication: Icarus
Volume: 66
ISSN: 0019-1035
Subject Category
Astrophysics
Accession Number
86A47865
Funding Number(s)
CONTRACT_GRANT: NSF AST-82-00477
CONTRACT_GRANT: NAGW-186
Distribution Limits
Public
Copyright
Other

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