Phys.Rev. C 102, 054318 (2020)

N.Kitamura, K.Wimmer, N.Shimizu, V.M.Bader, C.Bancroft, D.Barofsky, T.Baugher, D.Bazin, J.S.Berryman, V.Bildstein, A.Gade, N.Imai, T.Kroll, C.Langer, J.Lloyd, E.Lunderberg, G.Perdikakis, F.Recchia, T.Redpath, S.Saenz, D.Smalley, S.R.Stroberg, J.A.Tostevin, N.Tsunoda, Y.Utsuno, D.Weisshaar, A.Westerberg

Structure of ³⁰Mg explored via in-beam γ-ray spectroscopy

NUCLEAR REACTIONS ⁹Be(³¹Mg, ³⁰Mg), E=97.9 MeV; ⁹Be(³²Mg, ³⁰Mg), E=99.1 MeV; ⁹Be(³⁴Si, ³⁰Mg), E=94.8 MeV; ⁹Be(³⁵P, ³⁰Mg), E=102.3 MeV, [secondary beams from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon, followed by separation of fragments using A1900 separator for beam purification at NSCL-MSU facility]; measured reaction products using S800 spectrometer, Eγ, Iγ, γγ-coin, Doppler-corrected add-back γ-ray spectra using the Gamma-Ray Energy Tracking In-beam Nuclear Array (GRETINA) of seven modules, each module housing four HPGe crystals. ³⁰Mg; deduced levels, J, π, population σ of levels, spectroscopic factors, parallel momentum distributions; calculated T-plots in (Q₀, Q₂) plane. Comparison with shell-model calculations using the SDPF-M and EEdf1 interactions for all states. Systematics of low-energy levels in ³⁰Mg, ³²Si, ³⁴S, ³⁶Ar, ³⁸Ca. Relevance to "island of inversion".

doi: 10.1103/PhysRevC.102.054318