Phys.Rev. C 100, 034317 (2019)

B.Elman, A.Gade, R.V.F.Janssens, A.D.Ayangeakaa, D.Bazin, J.Belarge, P.C.Bender, B.A.Brown, C.M.Campbell, M.P.Carpenter, H.L.Crawford, B.P.Crider, P.Fallon, A.M.Forney, J.Harker, S.N.Liddick, B.Longfellow, E.Lunderberg, C.J.Prokop, J.Sethi, R.Taniuchi, W.B.Walters, D.Weisshaar, S.Zhu

Probing the role of proton cross-shell excitations in ⁷⁰Ni using nucleon knockout reactions

NUCLEAR REACTIONS ⁹Be(⁷¹Cu, ⁷⁰Ni), E=80.2 MeV/nucleon; ⁹Be(⁷¹Ni, ⁷⁰Ni), E=82.6 MeV/nucleon; ⁹Be(⁷²Zn, ⁷⁰Ni), E=76.5 MeV/nucleon, [secondary ⁷¹Cu, ⁷¹Ni, ⁷¹Zn beams from ⁹Be(⁷⁶Ge, X), E=130 MeV/nucleon primary reaction at the K500 and K1200 coupled cyclotrons of NSCL-MSU]; measured yields of reaction products, Eγ, Iγ, γγ- and (knockout residues)γ-coin using GRETINA array for γ detection, and CsI(Na) hodoscope array for reaction residues. ⁷⁰Ni; deduced levels, J, π, configurations. Comparison with shell-model calculations for only the neutron excitations using the jj44pna effective interaction.

doi: 10.1103/PhysRevC.100.034317