Isomeric state in the doubly odd $^196At$ nucleus

M.B. Smith, R. Chapman, J.F.C. Cocks, K.M. Spohr, O. Dorvaux, K. Helariutta, P.M. Jones, R. Julin, S. Juutinen, H. Kankaanpää, H. Kettunen, P. Kuusiniemi, Y. Le Coz, M. Leino, D.J. Middleton, M. Muikku, P. Nieminen, P. Rahkila, A. Savelius

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11 Citations (Scopus)


An excited isomeric state has been identified in the 196At nucleus using the recoil decay tagging technique. This is the first identification of an excited state in this neutron-deficient odd–odd nucleus. Several tentative prompt γ -rays have also been correlated with 196At α-decay, although it has not been possible to assign them to specific energy levels in 196At. The mean lifetime of the isomeric state has been measured as τ = 11 ± 2 µs. The new level is compared with similar low-lying states in neighbouring nuclei and is de-excited by an E2 γ -ray transition, the large hindrance of which is not expected.
Original languageEnglish
Pages (from-to)787-792
Number of pages6
JournalJournal of Physics G: Nuclear and Particle Physics
Issue number6
Publication statusPublished - Jun 2000


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