Determination of theN13(p,γ)14O reaction cross section using aN13radioactive ion beam

The cross section for the astrophysically important ${}_{}{}^{13}{}_{}{}^{}\mathrm{N}$(p,γ${)}^{14}$O reaction has been measured directly with an intense (3×${10}^8$ particles/s) and pure (>99%) 8.2-MeV ${}_{}{}^{13}{}_{}{}^{}\mathrm{N}$ radioactive ion beam. The average value, for the 5.8–8.2-MeV ${}_{}{}^{13}{}_{}{}^{}\mathrm{N}$ energy range, is 106(30) μb. The partial γ width of the resonance which occurs in this reaction at a center-of-mass energy of 0.545 MeV has been deduced to be 3.8(1.2) eV. It is compared with theoretical predictions and indirect determinations.