Phys.Rev. C 102, 014325 (2020)

D.Votaw, P.A.DeYoung, T.Baumann, A.Blake, J.Boone, J.Brown, D.Chrisman, J.E.Finck, N.Frank, J.Gombas, P.Gueye, J.Hinnefeld, H.Karrick, A.N.Kuchera, H.Liu, B.Luther, F.Ndayisabye, M.Neal, J.Owens-Fryar, J.Pereira, C.Persch, T.Phan, T.Redpath, W.F.Rogers, S.Stephenson, K.Stiefel, C.Sword, A.Wantz, M.Thoennessen

Low-lying level structure of the neutron-unbound N=7 isotones

NUCLEAR REACTIONS ⁹Be(¹¹Be, ⁸He), (¹¹Be, ⁹Li), E=44 MeV/nucleon; ⁹Be(¹²B, ⁸He), (¹²B, ⁹Li), E=45 MeV/nucleon, [secondary ¹¹Be and ¹²B beams from ⁹Be(¹⁶O, X), E=120 MeV/nucleon, followed by separation of ions of interest using A1900 Fragment Separator at the Coupled Cyclotron Facility of NSCL-MSU]; measured E(n), I(n), charged-particles, (particle)n-coin using the MoNA-LISA detector array for neutron detection and cathode readout drift chambers (CRDCs) for charged particles; deduced decay energy spectra of ⁹He and ¹⁰Li and neutron-unbound states. ⁹He, ¹⁰Li; deduced levels, resonances, widths, J, π, l-values of neutrons from the resonances in ⁹He and ¹⁰Li. Comparison with previous experimental results.

doi: 10.1103/PhysRevC.102.014325