Abstract
Nucleocosmochronological studies1–3 have used two short-lived isotopes (relative to the age of the Solar System), 129I(τ1/2 = 1.7 × 107 yr) and 244Pu(τ1/2 = 8.2 × 107 yr). Short-lived isotopes provide valuable information about the early history of the Solar System and, in particular, about meteorite parent bodies. Additional short-lived chronometers, particularly if created by different nucleosynthetic processes, would be very useful. The two isotopes 129I and 244Pu are believed to be produced (essentially) entirely by the r-process.
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BLAKE, J., SCHRAMM, D. 247Cm as a Short-lived r-Process Chronometer. Nature Physical Science 243, 138–140 (1973). https://doi.org/10.1038/physci243138a0
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DOI: https://doi.org/10.1038/physci243138a0