Phys.Rev. C 91, 017304 (2015)

A.N.Kuchera, A.Spyrou, J.K.Smith, T.Baumann, G.Christian, P.A.DeYoung, J.E.Finck, N.Frank, M.D.Jones, Z.Kohley, S.Mosby, W.A.Peters, M.Thoennessen

Search for unbound ¹⁵Be states in the 3n+ ¹²Be channel

NUCLEAR REACTIONS ⁹Be(¹⁷C, ¹⁵Be), E=55 MeV/nucleon, [¹⁷C secondary beam from ⁹Be(²²Ne, X) primary reaction]; measured particle spectra, (¹²Be)n-coin using MONA array at NSCL-MSU facility; reconstructed two-, three-, and four-body decay energies of the ¹²Be+ neutron system using invariant mass spectroscopy. ¹⁵Be; search for predicted unbound 3/2+ level proved inconclusive. In the best fit analysis, ¹⁵Be g.s. is unbound with respect to ¹²Be.

doi: 10.1103/PhysRevC.91.017304