The 21Ne production rate in stony meteorites estimated from 10Be and other radionuclides

Document Type

Article

Publication Date

1-1-1983

Abstract

The 10Be contents of 28 stony meteorites with known 21Ne contents range from 0.97 to 23 dpm/kg and give an average 21Ne production rate (P21) of (0.28 ± 0.02) × 108 cm3 STP/g-Myr for shielding conditions corresponding to 22Ne 21Ne = 1.114 in an H-chondrite. Our P21(10Be) agrees with others' P21 based on 22Na, 81Kr and 53Mn but not on 26A1. 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. © 1983.

Identifier

0020916787 (Scopus)

Publication Title

Geochimica Et Cosmochimica Acta

External Full Text Location

https://doi.org/10.1016/0016-7037(83)90205-3

ISSN

00167037

First Page

1887

Last Page

1895

Issue

11

Volume

47

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