Abstract
The strengths of low-energy resonances in ${}^{14}\mathrm{N}(\ensuremath{\alpha},\ensuremath{\gamma}{)}^{18}\mathrm{F}$ at 573 keV and 1136 keV have been measured using an activation method. In addition, their relative strength and the energy of the lower resonance have been determined in a prompt $\ensuremath{\gamma}$-ray experiment. The results of these measurements are used to reevaluate the stellar reaction rate of ${}^{14}\mathrm{N}(\ensuremath{\alpha},\ensuremath{\gamma}{)}^{18}\mathrm{F}.$ The present reaction rate at temperatures of astrophysical interest is a factor of 2 smaller than previously reported.
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