The ‘‘hot CNO cycle’’N13(p,γ) resonance energy and theNe18mass

The masses of ${}_{}{}^{18}{}_{}{}^{}\mathrm{Ne}$, and of the ${}_{}{}^{14}{}_{}{}^{}\mathrm{O}$ first excited state that dominates the astrophysical ${}_{}{}^{13}{}_{}{}^{}\mathrm{N}$(p,γ) reaction rate, were measured using the ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ ${(}^3$He,n) and ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ ${(}^3$He,n) reactions. We found mass excesses of 5316.8±1.5 keV for the ${}_{}{}^{18}{}_{}{}^{}\mathrm{Ne}$ ground state and 13163.4±2.0 keV for the first excited state of ${}_{}{}^{14}{}_{}{}^{}\mathrm{O}$. The ${}_{}{}^{14}{}_{}{}^{}\mathrm{O}$ mass corresponds to an ${}_{}{}^{13}{}_{}{}^{}\mathrm{N}$(p,γ) resonance energy of 528.8±2.0 keV. This is consistent with the result from a recent ${}_{}{}^{13}{}_{}{}^{}\mathrm{N}$+p study, but disagrees with the previously accepted value. Implications for the thermonuclear ${}_{}{}^{13}{}_{}{}^{}\mathrm{N}$(p,γ) rate are discussed.