Author(s)
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Bara, S (KU Leuven, Dept. Phys. Astron.) ; Jajčišinová, E (KU Leuven, Dept. Phys. Astron. ; Geel, JRC) ; Cocolios, T E (KU Leuven, Dept. Phys. Astron.) ; Andel, B (Comenius U.) ; Antalic, S (Comenius U.) ; Camaiani, A (Florence U. ; INFN, Florence ; KU Leuven, Dept. Phys. Astron.) ; Costache, C (Bucharest, IFIN-HH) ; Dockx, K (KU Leuven, Dept. Phys. Astron.) ; Farooq-Smith, G J (Edinburgh U. ; KU Leuven, Dept. Phys. Astron.) ; Kellerbauer, A (Geel, JRC) ; Lica, R (Bucharest, IFIN-HH) ; Lynch, K M (Manchester U.) ; Marini, P (LP2I, Bordeaux) ; Piersa-Siłkowska, M (CERN ; Warsaw U.) ; Stegemann, S T (CERN ; KU Leuven, Dept. Phys. Astron.) ; Stryjczyk, M (Jyvaskyla U. ; Helsinki Inst. of Phys. ; KU Leuven, Dept. Phys. Astron.) ; Treasa, D (LP2I, Bordeaux) ; Van Duppen, P (KU Leuven, Dept. Phys. Astron.) |
Abstract
| At CERN-ISOLDE, high-purity radioactive ion beams of $^{219}$Fr and $^{221}$RaF were investigated with $\alpha$-decay spectroscopy at the CRIS and ASET experiments in the course of three different experimental campaigns. The half-life of $^{215}$At, $\alpha$-decay daughter of $^{219}$Fr, is measured to be 36.3(3)[9]μs, and that of $^{221}$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. |