Phys.Lett. B 833, 137345 (2022)

H.Huang, W.Q.Zhang, A.N.Andreyev, Z.Liu, D.Seweryniak, Z.H.Li, C.Y.Guo, A.E.Barzakh, P.Van Duppen, B.Andel, S.Antalic, M.Block, A.Bronis, M.P.Carpenter, P.Copp, J.G.Cubiss, B.Ding, D.T.Doherty, Z.Favier, F.Giacoppo, T.H.Huang, B.Kindler, F.G.Kondev, T.Lauritsen, J.G.Li, G.S.Li, B.Lommel, H.Y.Lu, M.Al Monthery, P.Mosat, Y.F.Niu, C.Raison, W.Reviol, G.Savard, S.Stolze, G.L.Wilson, H.Y.Wu, Z.H.Wang, F.R.Xu, Q.B.Zeng, X.H.Yu, F.F.Zeng, X.H.Zhou

First observation of the decay of the 13/2⁺ isomer in ¹⁸³Hg and B(M2) systematics of neutron transitions across the nuclear chart

RADIOACTIVITY ¹⁸³Hg(α) [from ¹⁸⁷Pb α decay]; ^187mPb(α) [from ¹⁴²Nd(⁵⁰Cr, 3n2pγ), E=255 MeV, followed by separation of fragments using Argonne gas-filled analyzer (AGFA) at the ATLAS-ANL facility]; measured reaction products, evaporation residues (EVRs), Eα, Iα, (EVR)α-correlations, αγ(t), Eγ, Iγ, x rays, T_1/2 using double-sided silicon strip detector (DSSD), and four HPGe clover detectors. ^183,183mHg; deduced levels, isomer, J, π, T_1/2 of g.s. and isomer, α branching ratio, K-conversion coefficient, multipolarity, B(M2), Nilsson configurations. ^187mPb; deduced T_1/2. Systematics of decay schemes of 13/2+ isomers in ^{175,177,179,181,183,185}Hg. Systematics of B(M2) values for 7/2-, 9/2+, 11/2- and 13/2+ isomers in even-Z, odd-N nuclei: ²⁵Mg, ³³Si, ^33,35S, ³⁷Ar, ³⁹Ca, ⁵⁹Cr, ⁶¹Fe, ^63,67Ni, ^63,65,67Zn, ^67,69,71Ge, ^69,71Se, ^97,99Mo, ^99,101,103Ru, ^103,105Pd, ^107,109Cd, ^{109,111,113,115}Sn, ¹⁵³Yb, ¹⁶¹Hf, ¹⁶³W, ¹⁶³Os, ^171,189,191Pt, ^{181,183,201,203,205}Hg, ²⁰⁹Pb, ^205,207,211Po, ^207,209,213Rn, ^209,211Ra, ^211,213Th.

doi: 10.1016/j.physletb.2022.137345