Aluminum 26, Be-10 and Cl-36 depth profiles in the Canyon Diablo iron meteorite

Details Aluminum 26, Be-10 and Cl-36 depth profiles in the Canyon Diablo iron meteorite Aluminum 26, Be-10 and Cl-36 depth profiles in the Canyon Diablo iron meteorite

Nov 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994jgr....9923187m&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 99, no. E11, p. 23,187-23,194

Physics

20

Cosmic Rays, Iron Meteorites, Meteoritic Composition, Radioactive Age Determination, Radioactive Isotopes, Aluminum Isotopes, Beryllium Isotopes, Chlorine

Scientific paper

We have measured activities of the long-lived cosmogenic radionuclides Al-26, Be-10, and Cl-36 in 12 fragments of the iron meteorite Canyon Diablo and have constructed production rate-versus-depth profiles of those radionuclides. Profiles determined using differential particle fluxes calculated with the LAHET code system are in good agreement with Al-26, Be-10, and Cl-36 experimental data, but the agreement for Cl-36 was obtained only after neutron-induced cross sections were modified. Profiles calculated with lunar particle fluxes are much lower than experimental Canyon Diablo profiles. The cosmic ray exposure ages of most samples are near 540 m.y.

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