: At CERN-ISOLDE, high-purity radioactive ion beams of 219Fr and 221RaF were investigated with α-decay spectroscopy at the CRIS and ASET experiments in the course of three different experimental campaigns. The half-life of 215At, α-decay daughter of 219Fr, is measured to be 36.3(3)[9]μs, and that of 221Ra 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.
Half-life determination of 215At and 221Ra with high-purity radioactive ion beams / Bara, S.; Jajčišinová, E.; Cocolios, T.E.; Andel, B.; Antalic, S.; Camaiani, A.; Costache, C.; Dockx, K.; Farooq-Smith, G.J.; Kellerbauer, A.; Lica, R.; Lynch, K.M.; Marini, P.; Piersa-Siłkowska, M.; Stegemann, S.T.; Stryjczyk, M.; Treasa, D.; Van Duppen, P.. - In: APPLIED RADIATION AND ISOTOPES. - ISSN 0969-8043. - ELETTRONICO. - 208:(2024), pp. 111289.0-111289.0. [10.1016/j.apradiso.2024.111289]
Half-life determination of 215At and 221Ra with high-purity radioactive ion beams
Camaiani, A.Writing – Review & Editing
;
2024
Abstract
: At CERN-ISOLDE, high-purity radioactive ion beams of 219Fr and 221RaF were investigated with α-decay spectroscopy at the CRIS and ASET experiments in the course of three different experimental campaigns. The half-life of 215At, α-decay daughter of 219Fr, is measured to be 36.3(3)[9]μs, and that of 221Ra 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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