Phys.Rev. C 106, 014317 (2022)

A.A.Ciemny, C.Mazzocchi, W.Dominik, A.Fijalkowska, J.Hooker, C.Hunt, H.Jayatissa, L.Janiak, G.Kaminski, E.Koshchiy, M.Pfutzner, M.Pomorski, B.Roeder, G.V.Rogachev, A.Saastamoinen, S.Sharma, N.Sokolowska, W.Satula, J.Singh

β-delayed charged-particle decay of ^{22, 23}Si

RADIOACTIVITY ^22,23Si(β⁺), (β⁺p), (β⁺2p); ²³Si(β⁺3p), (β⁺α)[^22,23Si activities from Ni(²⁸Si, X), E=45 MeV/nucleon at the Texas A and M University K500 superconducting cyclotron, followed by separation of fragments using momentum achromat recoil separator (MARS)]; measured reaction fragments, particle spectra, E(p), I(p) using optical-readout time-projection chamber (OTPC). ²³Al, ²²Mg, ²¹Na; deduced levels, J, π. ²²Si, ²³Si; deduced T_1/2 of ground states, and absolute branching ratios for the observed decay modes; calculated Gamow-Teller matrix elements using angular-momentum-projected (AMP) method with DFT-NCCI module. ²³Al; calculated levels, J, π using multireference density-functional-rooted (DFT) calculations, and compared with shell-model calculations in literature. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.106.014317