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The longest-lived isotope of curium (Cm-247) decays over time into an isotope of uranium (U-235). Therefore, a mineral or a rock formed early in the solar system would have incorporated more Cm-247 than a similar mineral or rock that formed later, after Cm-247 had decayed.
14 Δεκ 2018 · The longest-lived curium isotope, 247 Cm, is also created during r-process nucleosynthesis in supernovae, as well as in smaller kilonovae involving neutron star mergers 29. With a half-life...
9 Μαρ 2016 · An analysis of uranium isotope ratios showed that a long-lived curium isotope was present early in the solar system when this inclusion was formed. Look below to see the entire meteorite.
4 Μαρ 2016 · Indeed, the longest-lived isotope of curium (247Cm) decays over time into an isotope of uranium (235U). Therefore, a mineral or a rock formed early in the solar system, when 247Cm existed, would...
21 Σεπ 2024 · Curium-247: Longest half-life of 15.6 million years. Curium-248 : Half-life of ~340,000 years, highly radioactive and used in long-term studies. Curium-250: Unusual in that it mainly decays via spontaneous fission.
24 Σεπ 2013 · It may, however, have existed long ago. The most stable isotope of curium, 247 Cm, has a half-life of 16 million years. Compared to the Earth’s age, this is relatively short.
Analysis of a 4.5 billion-year-old meteorite has confirmed that the element curium was present during the formation of our solar system, settling a 35-year debate over the issue. Uranium ...
