The yield of the two capture gamma rays in the O^(16)(p, γ)F^(17)reaction has been measured at 90° to the beam for bombarding energies in the range 2.56 - 2.76 MeV.An anomaly was observed in the yield of the capture gamma ray leading to the .500 MeV 1/2^+ state of F^(17) for a bombarding energy of approximately 2.66 MeV corresponding to the 3.10 MeV state of F^(17). No anomaly was observed in the yield of the capture gamma ray leading to the 5/2^+ ground state of F^(17).The experimental results were found to be in good agreement with theoretical calculations made on the basis of the extranuclear capture model of Christy and Duck (1961).On the basis of the experimental results and the theoretical calculations, the single particle reduced widths forthe 1/2^+ .500 MeV state and the 5/2^+ ground state of F^(17) were obtained.Using the definition of Lane (1958), these single particle reduced widths were found to be:
θ^21/2^+sp = .57 ± .10 θ^25/2+sp = .38 ± .08
From the shape of the anomaly observed in the yield of the capture gamma ray leading to the 1/2^+ state and the extranuclear calculations, an upper limit was placed upon the width of the gamma ray transition leading from the 1/2^- state at 3.10 meV to the 1/2^+ .500 meV state.This limit was Γ_γ < .03 eV.
