Extinct radionuclides

F. A. Podosek, T. D. Swindle

Research output: Contribution to journalArticlepeer-review

46 Scopus citations


"Extinct radionuclides' are radioactive isotopes with lifetimes of the order of 106 to 108 yr, long enough to survive the interval between nucleosynthesis and the formation of solids in the solar system but short enough so that they are essentially fully decayed and now extinct in the solar system. There is good evidence for the presence of several such radionuclides in the early solar system: 26Al, 53Mn, 107Pd, 129I, 244Pu, 146Sm. Together with longer-lived radionuclides the abundances of these short-lived species provide significant constraints on nucleosynthetic time scales and the history of solar system materials before they became the solar system. -from Authors

Original languageEnglish (US)
Pages (from-to)1093-1113
Number of pages21
JournalUnknown Journal
StatePublished - 1988

ASJC Scopus subject areas

  • General Environmental Science
  • General Earth and Planetary Sciences


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