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RESEARCH PRODUCT

Fine structure in the α decay of 218At

Jg CubissAn AndreyevAe BarzakhB AndelS AntalicTe CocoliosTd GoodacreDv FedorovVn FedosseevR Ferrer GarciaDa FinkLp GaffneyL GhysM HuyseZ KalaninováU KösterBa MarshPl MolkanovRe RosselS RotheMd SeliverstovS SelsAm SjödinM StryjczykV L.truesdaleC Van BeverenP Van DuppenGl Wilson

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An α-decay study of 218At was performed at the CERN-ISOLDE facility. Laser-ionized beams of 218At were mass separated and implanted into an α−γ detection setup. Coincidence α−γ data were collected for the first time and a more precise half-life value of T1/2=1.27(6) s was measured. A new α-decay scheme was deduced based on the extracted reduced α-decay widths for fine-structure decays. The results from this work lead to a preferred spin and parity assignment of Jπ=(3−); however, Jπ=(2)− cannot be fully excluded.

10.1103/physrevc.99.064317https://epn-library.esrf.fr/flora/jsp/index_view_direct_anonymous.jsp?record=doc:PUB_ILL:28735