Computer Science
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990gecoa..54.2133h&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 54, July 1990, p. 2133-2140.
Computer Science
27
Carbonaceous Chondrites, Energetic Particles, Meteoritic Microstructures, Murchison Meteorite, Murray Meteorite, Neon, Galactic Cosmic Rays, Solar Cosmic Rays, Solar Flares
Scientific paper
This paper presents the results on cosmogenic Ne extracted from individual meteoritic grains by a laser extraction system which used, at different times, two CW lasers: an Ar-ion laser and an Nd:YAG laser, with 20 and 70 W of deliverable power, respectively. Chemical etching was used to select grains exposed to solar flare VH particles. Results show that most of the grains with solar flare VH tracks (but not those which did not exhibit such tracks) contain spallation-produed Ne in significant excess of that due to the nominal cosmic-ray exposure, providing evidence for extensive energetic particle exposure during the precompaction era.
Goswami Jitendra N.
Hohenberg Charles M.
Nichols Robert Hill Jr.
Olinger Chad T.
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