An excitation function for the ${}_{}{}^{18}{}_{}{}^{}\mathrm{F}$(p,α${)}^{15}$O reaction has been measured in the energy range ${\mathit{E}}_{\mathrm{c}.\mathrm{m}.\mathrm{}}$=600–800 keV using a radioactive ${}_{}{}^{18}{}_{}{}^{}\mathrm{F}$ beam. A resonant state with a spin value of 3/$2^{+}$ has been found at an energy of 652 keV above threshold. This ${\mathit{l}}_{\mathit{p}}$=0 resonance is found to dominate the astrophysical reaction rate at temperatures ${\mathit{T}}_9$≳0.5. © 1996 The American Physical Society.

• Received 13 November 1995

DOI:https://doi.org/10.1103/PhysRevC.53.1950