Decay studies of the long-lived states in Tl186
- Stryjczyk, M.
- Andel, B.
- Andreyev, A. N.
- Cubiss, J.
- Pakarinen, J.
- Rezynkina, K.
- Van Duppen, P.
- Antalic, S.
- Berry, T.
- Borge, M. J. G.
- Clisu, C.
- Cox, D. M.
- De Witte, H.
- Fraile, L. M.
- Fynbo, H. O. U.
- Gaffney, L. P.
- Harkness-Brennan, L. J.
- Huyse, M.
- Illana, A.
- Judson, D. S.
- Konki, J.
- Kurcewicz, J.
- Lazarus, I.
- Lica, R.
- Madurga, M.
- Marginean, N.
- Marginean, R.
- Mihai, C.
- Mosat, P.
- Nacher, E.
- Negret, A.
- Ojala, J.
- Ovejas, J. D.
- Page, R. D.
- Papadakis, P.
- Pascu, S.
- Perea, A.
- Podolyák, Zs.
- Pucknell, V.
- Rapisarda, E.
- Rotaru, F.
- Sotty, C.
- Tengblad, O.
- Vedia, V.
- Viñals, S.
- Wadsworth, R.
- Warr, N.
- Wrzosek-Lipska, K.
DOIAbstract
Decay spectroscopy of the long-lived states in 186Tl has been performed at the ISOLDE Decay Station at ISOLDE, CERN. The α decay from the low-spin (2−) state in 186Tl was observed for the first time and a half-life of 3.4+0.5−0.4 s was determined. Based on the α-decay energy, the relative positions of the long-lived states were fixed, with the (2−) state as the ground state, the 7(+) state at 77(56) keV, and the 10(−) state at 451(56) keV. The level scheme of the internal decay of the 186Tl(10(−)) state [T1/2=3.40(9) s], which was known to decay solely through emission of 374-keV γ-ray transition, was extended and a lower limit for the β-decay branching bβ>5.9(3)% was determined. The extracted retardation factors for the γ decay of the 10(−...
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