Phys.Rev. C 102, 014329 (2020)

V.Paziy, L.M.Fraile, H.Mach, B.Olaizola, G.S.Simpson, A.Aprahamian, C.Bernards, J.A.Briz, B.Bucher, C.J.Chiara, Z.Dlouhy, I.Gheorghe, D.Ghita, P.Hoff, J.Jolie, U.Koster, W.Kurcewicz, R.Lica, N.Marginean, R.Marginean, J.-M.Regis, M.Rudigier, T.Sava, M.Stanoiu, L.Stroe, W.B.Walters

Fast-timing study of ⁸¹Ga from the β decay of ⁸¹Zn

RADIOACTIVITY ⁸¹Zn(β^-), (β^-n)[from U(p, F), E=1.4 GeV at CERN PS-Booster (PSB) facility, followed by separation of ionized nuclei using the ISOLDE-RILIS]; measured Eγ, Iγ, b^-, βγ- and γγ-coin, half-life of ⁸¹Zn decay, level half-lives by βγγ(t) fast-timing technique, β-delayed neutron branching ratio or P_n using HPGe and LaBr₃ detectors for γ detection and a plastic scintillator for β detection at CERN-ISOLDE. ^80,81Ga(β^-); measured half-lives of ⁸⁰Ga and ⁸¹Ga decays. ^80,81Ga; deduced levels, J, π, Iβ, logft, B(M1), and B(E2). Comparison with large-scale shell model calculations using the NuShellX@MSU and ANTOINE codes with JUN45 and jj44b interactions. Systematics of low-lying levels in ^{71,73,75,77,79,81}Ga, ⁷⁹Cu, ⁸³As, ⁸⁵Br, ⁸⁷Rb. ⁸¹Zn; discussed spin, parity and configuration of the ground state.

doi: 10.1103/PhysRevC.102.014329