Phys.Rev. C 111, 014304 (2025)

J.L.Chen, H.Watanabe, P.M.Walker, Y.Hirayama, Y.X.Watanabe, M.Mukai, C.F.Jiao, M.Ahmed, M.Brunet, T.Hashimoto, S.Ishizawa, F.G.Kondev, G.J.Lane, Yu.A.Litvinov, H.Miyatake, J.Y.Moon, T.Niwase, J.H.Park, Zs.Podolyak, M.Rosenbusch, P.Schury, M.Wada, F.R.Xu

Direct observation of β and γ decay from a high-spin long-lived isomer in ¹⁸⁷Ta

RADIOACTIVITY ¹⁸⁷Ta(IT), (β^-) [from W(¹³⁶Xe, X)¹⁸⁷Ta, E=7.2 MeV/nucleon]; measured decay products, Eγ, Iγ, β-γ-coin.; deduced γ-ray energies and relative intensities, J, π, tentative level and decay schemes, high-spin long-lived isomer total decay constant, T_1/2, internal decay branch. Comparison with configuration-constrained potential-energy-surface (CCPES) calculations based on a Woods-Saxon (WS) potential with the so-called universal parameters and experimental data. The RIKEN Ring Cyclotron, the KISS setup at the RIKEN Nishina Center in Japan.

doi: 10.1103/PhysRevC.111.014304