Abstract.
A new measurement of the 200Fr α-decay half-life, with improved accuracy compared to previous measurements, has been carried out at the Isolde-CERN on-line mass separator. A half-life of 49(4) ms has been obtained, which is substantially different from earlier literature values. For the 196At daughter decay, a half-life of 389(54) ms and an α branching ratio bα = 94(5)% were measured. In addition, the half-lives of 201, 203, 205Fr and 197,199At are reported.
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De Witte, H., Andreyev, A.N., Dean, S. et al. Alpha-decay of neutron-deficient 200Fr and heavier neighbours. Eur. Phys. J. A 23, 243–247 (2005). https://doi.org/10.1140/epja/i2004-10077-9
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DOI: https://doi.org/10.1140/epja/i2004-10077-9