Aluminum-26 in Deep-Sea Sediment

17 September 1976

journal article
other
Published by American Association for the Advancement of Science (AAAS) in Science

Vol. 193 (4258) , 1119-1121
https://doi.org/10.1126/science.193.4258.1119

Abstract

The activity of ²⁶ Al in a North Pacific core was found to be 0.081 ± 0.046 disintegration per minute per kilogram of dry sediment, which corresponds to a ²⁶ Al/ ¹⁰ Be ratio of 0.018 ± 0.011 (or 0.019 ± 0.012 when this ratio is corrected for decay). This ratio is in good agreement with that measured in Greenland ice, 0.017 ± 0.008. These ratios are also in agreement with the calculated values for the production of these isotopes by cosmic rays in the atmosphere: 0.013 ± 0.006. The contribution of cosmic dust bearing ²⁶ Al seems small in comparison with the production of this nuclide in the atmosphere.

Keywords

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