Proton-transfer study of unbound $^{19}$Ne states via ${}^2$H(${}^{18}$F,$\alpha$+$^{15}$O)n*

The nuclear structure of ${}^{19}{\rm Ne}$ near the proton threshold is of interest for understanding the rates of proton-induced reactions on ${}^{18}{\rm F}$ in novae. The proton transfer reaction ${}^{18}{\rm F}(d,n){}^{19}{\rm Ne}$ has been measured by bombarding a 720-$\mu$g/cm$^2$ CD$_2$ target with a 150-MeV ${}^{18}{\rm F}^{9+}$ beam at ORNL's Holifield Radioactive Ion Beam Facility. The ${}^{19}{\rm Ne}$ states of interest near the proton threshold decay by breakup into $\alpha+{}^{15}{\rm O}$ which are detected in coincidence with position-sensitive $E-\Delta E$ Si telescopes. The reconstruction of the relative energy reveals the excited states of ${}^{19}{\rm Ne}$ which are populated. The mirror reaction ${}^2$H(${}^{18}$F,$\alpha$+$^{15}$N)p has been measured simultaneously. The implications for the ${}^{18}{\rm F}(p,\alpha){}^{15}{\rm O}$ reaction and ${}^{19}{\rm Ne}$-${}^{19}{\rm F}$ mirror symmetry will be discussed.