Phys.Rev. C 100, 014323 (2019)

B.Abromeit, V.Tripathi, H.L.Crawford, S.N.Liddick, S.Yoshida, Y.Utsuno, P.C.Bender, B.P.Crider, R.Dungan, P.Fallon, K.Kravvaris, N.Larson, R.S.Lubna, T.Otsuka, C.J.Prokop, A.L.Richard, N.Shimizu, S.L.Tabor, A.Volya

Β^- decay of T_z = +11/2 isotopes ³⁷Al and ³⁹Si: Understanding Gamow-Teller strength distribution in neutron-rich nuclei

RADIOACTIVITY ³⁷Al, ^37,39,40Si, ^37,39P(β^-)[from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon, followed by fragment separation using A1900 separator at NSCL-MSU]; ³⁷Al, ³⁹Si(β^-n); measured β, Eγ, Iγ, βγ-coin, half-lives of decays of ³⁷Al, ³⁷Si and ³⁹Si, %β^-n for decays of ³⁷Al and ³⁹Si using β-counting system (BCS) at NSCL-MSU which consisted of silicon PIN detectors, segmented planar Ge double-sided strip detector (GeDSSD) for implants and β^- detection, and an array of 16 segmented Ge detectors for γ rays. ³⁶Si, ³⁷Si, ^37,39,40P, ^37,39S; deduced levels, J, π, β feedings, logft, %β^-n. Systematics of low-lying positive π states in ^35,37,39P, and T_1/2 in N=20-28 Si isotopes. Comparison with shell model calculations.

NUCLEAR STRUCTURE ^35,37,39P, ^37,39S, ³⁷Si; calculated levels, J, π, logft values. Shell model calculations using the SDPFSDG-MU interaction. Comparison with experimental data from the present experiment, and the evaluated data in the ENSDF database at NNDC.

doi: 10.1103/PhysRevC.100.014323