Phys.Rev. C 96, 064310 (2017)

D.Steppenbeck, S.Takeuchi, N.Aoi, P.Doornenbal, M.Matsushita, H.Wang, H.Baba, S.Go, J.D.Holt, J.Lee, K.Matsui, S.Michimasa, T.Motobayashi, D.Nishimura, T.Otsuka, H.Sakurai, Y.Shiga, P.-A.Soderstrom, S.R.Stroberg, T.Sumikama, R.Taniuchi, J.A.Tostevin, Y.Utsuno, J.J.Valiente-Dobon, K.Yoneda

Structure of ⁵⁵Sc and development of the N=34 subshell closure

NUCLEAR REACTIONS ⁹Be(⁵⁶Ti, ⁵⁵Sc), (⁵⁵Sc, ⁵⁵Sc'), E=200 MeV/nucleon, ; [secondary ⁵⁶Ti and ⁵⁵Sc beams from primary ⁷⁰Zn beam and using BigRIPS for fragment identification at RIBF-RIKEN facility]; measured Eγ, Iγ, γγ-coin using DALI2 array of scintillation detectors for γ radiation, and ZeroDegree spectrometer for reaction products. ⁵⁵Sc; deduced levels. Comparison with large-scale shell-model calculations in sdpf model space, and with ab initio shell-model calculations from the in-medium similarity renormalization group.

NUCLEAR STRUCTURE ⁵⁵Sc; calculated levels, J, π, σ, spectroscopic factors for one-proton removal reaction; discussed configurations. Large-scale shell-model with SDPF-MUr effective interaction, and ab initio many-body method with the valence-space formulation of the in-medium similarity renormalization group (VS-IM-SRG). Comparison with experimental data, and proton-removal reaction treated with the eikonal model.

doi: 10.1103/PhysRevC.96.064310