Phys.Rev. C 106, 024305 (2022)

M.M.Zhang, Y.L.Tian, Y.S.Wang, Z.Y.Zhang, Z.G.Gan, H.B.Yang, M.H.Huang, L.Ma, C.L.Yang, J.G.Wang, C.X.Yuan, C.Qi, A.N.Andreyev, X.Y.Huang, S.Y.Xu, Z.Zhao, L.X.Chen, J.Y.Wang, M.L.Liu, Y.H.Qiang, G.S.Li, W.Q.Yang, R.F.Chen, H.B.Zhang, Z.W.Lu, X.X.Xu, L.M.Duan, H.R.Yang, W.X.Huang, Z.Liu, X.H.Zhou, Y.H.Zhang, H.S.Xu, N.Wang, H.B.Zhou, X.J.Wen, S.Huang, W.Hua, L.Zhu, X.Wang, Y.C.Mao, X.T.He, S.Y.Wang, W.Z.Xu, H.W.Li, Y.F.Niu, L.Guo, Z.Z.Ren, S.G.Zhou

Fine structure in the α decay of the 8⁺ isomer in ^{216, 218}U

RADIOACTIVITY ^{216,216m,218,218m}U(α)[²¹⁸U from ¹⁸²W(⁴⁰Ar, 4n), E=190 MeV, ¹⁸⁴W(⁴⁰Ca, 2nα), E=206 MeV, ²¹⁶U from ¹⁸⁰W(⁴⁰Ar, 4n), E=191 MeV]; measured evaporation residues (EVRs), Eα, Iα, (EVR)α₁-α₂-correlations, T_1/2 using position-sensitive strip detectors (PSSDs) for α detection, and SHANS separator at HIRFL-Lanzhou. ^{216,216m,218,218m}U; deduced T_1/2, Q-values, α-branching ratio, α-decay hindrance factors. ²⁰⁴Rn, ^208,210Ra, ^212,214Th(α)[from ^216,218U α-decay chains]; measured Eα, T_1/2. ²¹²Th; deduced level, J, π, identification of the first 2+ state. ²¹⁵Ra, ^212,213,216Ac, ^{211,212,213,214,216,216m,217}Th, ^{216,217,217m,218}Pa, ^217,218,219U; observed Eα from their decays from (EVR)α-correlations. Comparison with previous experimental data.

doi: 10.1103/PhysRevC.106.024305