Spectroscopy of the Unbound NucleusN11by theC12(N14,C15)N11Transfer Reaction

A spectroscopic study of the proton-rich, particle unstable nucleus ${}^{11}\mathrm{N}$ has been performed using the multinucleon transfer reaction ${}^{12}\mathrm{C}{(}^{14}\mathrm{N}{,}^{15}\mathrm{C}{)}^{11}\mathrm{N}$ at $30A\mathrm{MeV}$ incident energy at GANIL. Levels of ${}^{11}\mathrm{N}$ are observed as well defined resonances in the spectrum of the ${}^{15}\mathrm{C}$ ejectiles. They are localized at 2.18(5), 3.63(5), 4.39(5), 5.12(8), and 5.87(15) MeV above the ${}^{10}\mathrm{C}+p$ threshold. The comparison of the measured widths with $R$-matrix calculations allows the estimation of spins and parities for these resonances.