${}_{}{}^{16}{}_{}{}^{}\mathrm{O}({}_{}{}^6{}_{}{}^{}\mathrm{Li},d)$ excitation functions have been measured in the laboratory energy range from 19.8 to 32 MeV, in 200 keV steps, for the ${}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$ $0^{+}$ (0.0 MeV) and $2^{+}$ (1.62 MeV) states at 7.5° and for the $2^{+}$ (1.62 MeV) and $4^{+}$ (4.25 MeV) states at 17.5°. The fluctuations in the data are less than ±25% over this energy region. At 20, 24, and 28 MeV the cross sections at 165° are at least 5-10 times smaller than at 25°. Comparisons between the data and distorted-wave Born approximation calculations over this energy range show the reaction mechanism to be more complicated than a simple one-step $\alpha$ particle transfer.

[NUCLEAR REACTIONS ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}({}_{}{}^6{}_{}{}^{}\mathrm{Li},d){}_{}{}^{20}{}_{}{}^{}\mathrm{Ne}$($0^{+},0.0\mathrm{}$ MeV; $2^{+}$, 1.62 MeV; $4^{+}$, 4.25 MeV), $E\left({}_{}{}^6{}_{}{}^{}\mathrm{Li}\right)=19.8-32\mathrm{}$ MeV, $\Delta E=200\mathrm{}$ keV; measured $\sigma \mathrm{}\left(E\right)\mathrm{}$ at ${\theta }_{\mathrm{lab}}={7.5}^{\circ } \mathrm{and} {17.5}^{\circ }$.]

• Received 24 February 1977

DOI:https://doi.org/10.1103/PhysRevC.17.79