Phys.Rev. C 104, 024307 (2021)

R.Elder, H.Iwasaki, J.Ash, D.Bazin, P.C.Bender, T.Braunroth, C.M.Campbell, H.L.Crawford, B.Elman, A.Gade, M.Grinder, N.Kobayashi, B.Longfellow, T.Mijatovic, J.Pereira, A.Revel, D.Rhodes, D.Weisshaar

Lifetime measurements probing collectivity in the ground-state band of ³²Mg

NUCLEAR REACTIONS ⁹Be(³⁴Si, ³²Mg), (³⁴Si, ³⁰Mg), E=60 MeV/nucleon, [secondary ³⁴Si beam from ⁹Be(⁴⁸Ca, X), E=140 meV/nucleon primary reaction, followed by separation of fragments using A1900 fragment separator at the NSCL-Coupled Cyclotron Facility]; measured reaction products by time-of-flight and energy-loss measurements using the S800 spectrograph, Eγ, Iγ, (³²Mg)γ-coin, half-lives of the first 2+ and 4+ levels in ³²Mg and first 2+ in ³⁰Mg using GRETINA array for γ detection and TRIPLEX plunger device. ^30,32Mg; deduced levels, J, π, B(E2). Comparison with shell-model calculations using SDPF-M, SDPF-U-MIX, AMPGCM, EKK, USDA and CHFB+LQRPA interactions, and with previous experimental B(E2) results. Systematics of measured B(E2) for first 2+ state in even-even Z=12 isotopes from N=16 to N=24, and those of theoretical B(E2) from N=16 to N=28.

doi: 10.1103/PhysRevC.104.024307