Phys.Rev. C 92, 054309 (2015)

A.Lepailleur, K.Wimmer, A.Mutschler, O.Sorlin, J.C.Thomas, V.Bader, C.Bancroft, D.Barofsky, B.Bastin, T.Baugher, D.Bazin, V.Bildstein, C.Borcea, R.Borcea, B.A.Brown, L.Caceres, A.Gade, L.Gaudefroy, S.Grevy, G.F.Grinyer, H.Iwasaki, E.Khan, T.Kroll, C.Langer, A.Lemasson, O.Llidoo, J.Lloyd, E.Lunderberg, F.Negoita, F.de Oliveira Santos, G.Perdikakis, F.Recchia, T.Redpath, T.Roger, F.Rotaru, S.Saenz, M.-G.Saint-Laurent, D.Smalley, D.Sohler, M.Stanoiu, S.R.Stroberg, M.Vandebrouck, D.Weisshaar, A.Westerberg

Spectroscopy of ²⁸Na: Shell evolution toward the drip line

NUCLEAR REACTIONS ⁹Be(³⁶S, X)²²N/²⁴O, ²⁶F/²⁷Ne/²⁸Ne/²⁹Na/³⁰Na, E=77.6 MeV/nucleon; measured production yields using LISE spectrometer at GANIL. ⁹Be(³¹Mg, ²⁸Na), (³²Mg, ²⁸Na), E=95 MeV/nucleon, [secondary ^31,32Mg beams from ⁹Be(⁴⁸Ca, X), E=140 MeV/nucleon using A1900 separator at NSCL-MSU; measured Eγ, Iγ, (²⁸Na)γ-, γγ-coin, level half-life using S800 spectrograph for ²⁸Na and GRETINA array for γ detection. ²⁸Na; deduced levels, J, π, multipolarity. Comparison with shell-model calculations using WBA-M and USDA interactions. Systematics of binding energies for ²⁶F, ²⁸Na, ³⁰Al. ²⁵O, ²⁶F, ²⁷Ne; calculated levels, J, π using shell-model with WBA-M interaction.

RADIOACTIVITY ²⁸Ne(β^-)[from ⁹Be(³⁶S, X), E=77.6 MeV/nucleon at GANIL]; measured Eγ, Iγ, Eβ, βγ-coin, half-life of ²⁸Ne activity using EXOGAM array for γ detection. ²⁸Na; deduced levels, J, π, β feedings, logft. Comparison with shell model using the USDA interaction. ^27,28Al, ^27,28Mg, ²⁸Si; observed γ rays from β decay of contaminants.

doi: 10.1103/PhysRevC.92.054309