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    Half-life determination of 215^{215}At and 221^{221}Ra with high-purity radioactive ion beams

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    International audienceAt CERN-ISOLDE, high-purity radioactive ion beams of 219^{219}Fr and 221^{221}RaF were investigated with α\alpha-decay spectroscopy at the CRIS and ASET experiments in the course of three different experimental campaigns. The half-life of 215^{215}At, α\alpha-decay daughter of 219^{219}Fr, is measured to be 36.3(3)[9]μs, and that of 221^{221}Ra was determined to be 26.2(1)[6]s, both of which are well in line with the trends in this region of the nuclear landscape but at odds with some of the reported literature

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