The ${}_{}{}^{19}{}_{}{}^{}\mathrm{F}(d,{\alpha }_0){}_{}{}^{17}{}_{}{}^{}\mathrm{O}$ and ${}_{}{}^{19}{}_{}{}^{}\mathrm{F}(d,{\alpha }_1){}_{}{}^{17}{}_{}{}^{}\mathrm{O}$ reactions have been studied by measuring excitation functions in 30 keV steps over the energy range between 2.34 and 14.45 MeV deuteron energies. Cross-section data were collected simultaneously at laboratory angles of 70°, 90°, 120°, 150°, and 170°. The measured excitation functions exhibit strong resonance structures superimposed upon a smoothly varying component. The widths of these resonances are on the order of 500 keV. The corresponding excitation energy of the compound nucleus ${}_{}{}^{21}{}_{}{}^{}\mathrm{Ne}$ ranged between 19 and 25 MeV. A narrow region encompassing one of the strongest resonances was measured in smaller steps to look for finer structure. No evidence for fine structure greater than 10 keV was observed.

NUCLEAR REACTIONS ${}_{}{}^{19}{}_{}{}^{}\mathrm{F}(d,{\alpha }_{0,1})$, $E_d=2.34\mathrm{}-14.45$ MeV, measured excitation functions at five laboratory angles. Deduced direct reaction contribution of reaction mechanism.

• Received 17 April 1975

DOI:https://doi.org/10.1103/PhysRevC.13.528