Radioactivity in polymetallic nodules from the Clarion-Clipperton Zone
In this study we present, for the first time, specific activities of all long-lived alpha, beta and gamma emitters from the natural decay chains of Uranium-238, Uranium-235 and Thorium-232, in bulk and surface material of the same nodules obtained from 10 locations within the Clarion-Clipperton Zone...
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| creator | Kunze, Christian Rühlemann, Carsten Lüttke, Thomas Vink, Annemiek Kuhn, Thomas Flesch, Klaus Arndt, Robert Hummrich, Holger Krzikalla, Annegret Lucks, Christian |
| description | In this study we present, for the first time, specific activities of all long-lived alpha, beta and gamma emitters from the natural decay chains of Uranium-238, Uranium-235 and Thorium-232, in bulk and surface material of the same nodules obtained from 10 locations within the Clarion-Clipperton Zone. The results show elevated specific activities for the nuclides Th-230, Ra 226, Pb-210, Po-210, as well as Pa-231 and Ac-227 in accordance with prior reported activities. However, in contrast to assumptions made in previous studies, our analyses show that Pa-231 is not in equilibrium with its daughter nuclide Ac-227. |
| doi_str_mv | 10.17632/c5kv9k6htj.1 |
| format | Dataset |
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The results show elevated specific activities for the nuclides Th-230, Ra 226, Pb-210, Po-210, as well as Pa-231 and Ac-227 in accordance with prior reported activities. 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| subjects | Alpha Spectroscopy Deep Sea Environmental Radioactivity Gamma Spectroscopy Radiochemistry Radioisotope Radon |
| title | Radioactivity in polymetallic nodules from the Clarion-Clipperton Zone |
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