Aluminum-26 in Deep-Sea Sediment
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...
| Published in: | Science |
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| Main Authors: | , , |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
American Association for the Advancement of Science (AAAS)
1976
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| Subjects: | |
| Online Access: | http://dx.doi.org/10.1126/science.193.4258.1119 https://www.science.org/doi/pdf/10.1126/science.193.4258.1119 |
| Summary: | 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. |
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