Phys.Rev. C 104, L061305 (2021)

J.N.Orce, E.J.Martin Montes, K.J.Abrahams, C.Ngwetsheni, B.A.Brown, M.Kumar Raju, C.V.Mehl, M.J.Mokgolobotho, E.H.Akakpo, D.L.Mavela, P.Adsley, R.A.Bark, N.Bernier, T.D.Bucher, N.R.Erasmus, T.S.Dinoko, P.M.Jones, N.Y.Kheswa, N.A.Khumalo, E.A.Lawrie, J.J.Lawrie, B.L.Lesch, S.N.T.Majola, S.S.Ntshangase, P.Papka, V.Pesudo, B.Rebeiro, O.Shirinda, M.Wiedeking, W.Yahia-Cherif

Reorientation-effect measurement of the < 2⁺₁ Ε2 2⁺₁ > matrix element in ³⁶Ar

NUCLEAR REACTIONS ¹⁹⁴Pt(³⁶Ar, ³⁶Ar), E=134.2 MeV; measured Eγ, Iγ, γ(θ), (particle)γ-coin using AFRODITE array of eight HPGe clover detectors coupled to an annular, double-sided silicon detector at iThemba LABS; analyzed Coulomb excitation yields using semiclassical coupled-channel Coulomb-excitation least-squares code GOSIA. ³⁶Ar; deduced E2 matrix element and B(E2) for the first 2+ state, diagonal E2 matrix element and spectroscopic quadrupole moment for the first 2+ state.Systematics of Q(for first 2+)/B(E2) for first 2+ in ²⁰Ne, ²⁴Mg, ²⁸Si, ³²S, ³⁶Ar.

NUCLEAR MOMENTS ³⁶Ar; measured spectroscopic quadrupole moment of the first excited 2+ state by reorientation-effect in Coulomb excitation using ¹⁹⁴Pt(³⁶Ar, ³⁶Ar), E=134.2 MeV, and analyzing Coulomb excitation yields using GOSIA code. Comparison with beyond mean-field and large-scale shell-model calculations, and with experimental spectroscopic quadrupole moments for the first 2+ states in ²⁰Ne, ²⁴Mg, ²⁸Si, ³²S, ³⁶Ar.

doi: 10.1103/PhysRevC.104.L061305