Phys.Rev. C 98, 014313 (2018)

A.Esmaylzadeh, L.M.Gerhard, V.Karayonchev, J.-M.Regis, J.Jolie, M.Bast, A.Blazhev, T.Braunroth, M.Dannhoff, F.Dunkel, C.Fransen, G.Hafner, L.Knafla, M.Ley, C.Muller-Gatermann, K.Schomacker, N.Warr, K.-O.Zell

Lifetime determination in ^{190, 192, 194, 196}Hg via γ-γ fast-timing spectroscopy

NUCLEAR REACTIONS ¹⁷⁸Hf(¹⁶O, 4n)¹⁹⁰Hg, E=87 MeV; ¹⁸⁴W(¹²C, 4n)¹⁹²Hg, E=66 MeV; ¹⁸⁶W(¹²C, 4n)¹⁹⁴Hg, E=64 MeV; ¹⁹⁷Au(p, 2n)¹⁹⁶Hg, E=17 MeV; measured Eγ, Iγ, level half-lives of first 2+ and 4+ states in ^{190,192,194,196}Hg, first 7- in ¹⁹²Hg, first 9- in ¹⁹⁴Hg and first 5- in ¹⁹⁶Hg by γγ-coin fast-timing technique using HORUS array and LaBr₃(Ce) detectors at the Cologne University Institute of Nuclear Physics ^{190,192,194,196}Hg; deduced levels, J, π, B(E2), B(E1). Comparison with theoretical calculations using interacting boson model configuration mixing (IBM-CM), and interacting boson model-2 (IBM-2). Systematics of excitation energies of yrast states, E(first 4+)/E(first 2+) ratios, and B(E2) for first 2+ and 4+ states in A=172-204 Hg isotopes.

doi: 10.1103/PhysRevC.98.014313