Ion bombardment of interplanetary dust

Details Ion bombardment of interplanetary dust Ion bombardment of interplanetary dust

Jun 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986icar...66..619j&link_type=abstract

Icarus (ISSN 0019-1035), vol. 66, June 1986, p. 619-624.

Physics

8

Charged Particles, Chondrites, Cosmic Plasma, Energetic Particles, Interplanetary Dust, Ion Irradiation, Carbon, Stratosphere, Van Der Waals Forces

Scientific paper

It 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.

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