Phys.Rev.Lett. 127, 262502 (2021)

Y.Jin, C.Y.Niu, K.W.Brown, Z.H.Li, H.Hua, A.K.Anthony, J.Barney, R.J.Charity, J.Crosby, D.Dell'Aquila, J.M.Elson, J.Estee, M.Ghazali, G.Jhang, J.G.Li, W.G.Lynch, N.Michel, L.G.Sobotka, S.Sweany, F.C.E.Teh, A.Thomas, C.Y.Tsang, M.B.Tsang, S.M.Wang, H.Y.Wu, C.X.Yuan, K.Zhu

First Observation of the Four-Proton Unbound Nucleus ¹⁸Mg

RADIOACTIVITY ¹⁸Mg(¹⁴O), (2p), (4p) [from ⁹Be(²⁰Mg, X)¹⁸Mg, E=170 MeV/nucleon]; measured decay products, Ep, Ip, ¹⁸Mg, ¹⁶Ne; deduced decay energy spectra, level scheme, J, π, resonance parameters. Comparison with the Gamow shell model (GSM) calculations.

doi: 10.1103/PhysRevLett.127.262502