Phys.Rev. C 95, 024308 (2017)

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

β decay of ^{38, 40}Si (T_z =+5, +6) to low-lying core excited states in odd-odd ^38-40P isotopes

RADIOACTIVITY ^38,40Si(β^-), (β^-n)[from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon using A1900 separator at NSCL-MSU facility]; measured Eγ, Iγ, Eβ, γγ-coin, β-correlated γ spectra, half-lives and delayed-neutron probabilities (P_n) of decays of ³⁸Si and ⁴⁰Si using planar germanium double-sided strip detector (GeDSSD) and SeGA array. ^38,40P; deduced levels, J, π, β feedings log ft values. Comparison with known experimental level schemes of ³⁴ and ³⁶P, and with shell model calculations using SDPF-MU interaction. ^36,38,40Si(β^-); calculated half-lives and log ft values of decays of Si isotopes, beta-delayed neutron probabilities (P_n) using shell model, and compared with experimental values.

NUCLEAR STRUCTURE ^34,36,38,40P; calculated levels, J, π, proton and neutron occupancies for the ground state and the three excited 1+ states, Gamow-Teller matrix elements for the 1+ states. Shell model calculations with SDPF-MU interaction. Comparison with experimental data.

doi: 10.1103/PhysRevC.95.024308