Other
Scientific paper
Nov 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983gecoa..47.1887m&link_type=abstract
Geochimica et Cosmochimica Acta (ISSN 0016-7037), vol. 47, Nov. 1983, p. 1887-1895. Research supported by Rutgers University and
Other
10
Cosmic Rays, Isotope Effect, Meteoritic Composition, Radioactive Age Determination, Stony Meteorites, Beryllium Isotopes, Chondrites, Half Life, Neon Isotopes, Radiant Flux Density, Radiation Effects, Meteorites, Stony Meteorites, Isotopes, Production Rates, Radionuclides, Neon 21, Beryllium 10, Cosmic Rays, Flux, Chemistry, Composition
Scientific paper
The Be-10 contents of 28 stony meteorites with known Ne-21 contents range from 0.97 to 23 dpm/kg and give an average Ne-21 production rate (P21) of (0.28 + or - 0.02) x 10 to the -8th cu cm STP/g-My for shielding conditions corresponding to Ne-22/Ne-21 = 1.114 in an H-chondrite. This P21 (Be) agrees with others' P21 based on Na-22, Kr-81, and Mn-53, but not an Al-26. Temporal variations in the cosmic ray flux do not explain the disagreement satisfactorily; major errors in the radionuclide half-lives are not indicated. The discrepancy seems rooted in the data selection and the difficulties of making accurate corrections for shielding, chemical composition and other sources of variability.
Hall Graham S.
Herzog Gregory F.
Kruse T. H.
Milazzo T.
Moniot Robert K.
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