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Abundance of live 244Pu in deep-sea reservoirs on Earth points to rarity of actinide nucleosynthesis

Wallner, Anton; Faestermann, T.; Feige, J.; Feldstein, C; Knie, K.; Korschinek, Gunther; Kutschera, W; Ofan, A; Paul, M.; Quinto, F.; Rugel, G.; Steier, P


Half of the heavy elements including all actinides are produced in r-process nucleosynthesis whose sites and history still remain a mystery. If continuously produced, the Interstellar Medium (ISM) is expected to build up a quasi-steady state of abundances of short-lived nuclides (with half-lives ≤100My), including actinides produced in r-process nucleosynthesis. Their existence in today’s ISM would serve as a radioactive clock and would establish that their production was recent. In particular...[Show more]

CollectionsANU Research Publications
Date published: 2015
Type: Journal article
Source: Nature Communications
DOI: 10.1038/ncomms6956
Access Rights: Open Access


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