Phys.Rev. C 96, 044329 (2017)

A.B.Garnsworthy, M.Bowry, B.Olaizola, J.D.Holt, S.R.Stroberg, S.Cruz, S.Georges, G.Hackman, A.D.MacLean, J.Measures, H.P.Patel, C.J.Pearson, C.E.Svensson

Spectroscopy of ⁵⁰Sc and ab initio calculations of B(M3) strengths

RADIOACTIVITY ⁵⁰Ca(β^-)[from Ta(p, X), E=500 MeV at TRIUMF-ISAC facility]; measured Eγ, Iγ, γγ-coin, γγ(θ), level half-lives by γγ(t) using GRIFFIN array of clover HPGe detectors, LaBr₃(Ce) scintillators for fast timing, and plastic scintillator array SCEPTAR for β particles. ⁵⁰Sc; deduced levels, J, π, γ-ray branching ratios, B(M3), B(M1), B(E2), mixing ratio, single-particle-orbital occupation numbers. Comparison with theoretical transition strengths from standard operators and from wave functions produced with the KB3G-pf shell interaction and the valence-space in-medium similarity renormalization group (VS-IMSRG). Comparison of experimental and theoretical B(M3) for transitions in ²⁴Na, ²⁴Al, ^34,38Cl, ³⁸K and ⁵⁰Sc, the theoretical values from ab initio calculations using the VS-IMSRG approach with consistently derived effective Hamiltonians and effective M3 operator.

doi: 10.1103/PhysRevC.96.044329