The systematic energy dependence of recently published surface-transparent potentials is shown to be affected very little by the coupling to the first excited $2^{+}$ state in ${}_{}{}^{28}{}_{}{}^{}\mathrm{Si}$, although the elastic scattering cross sections depend quite strongly on the coupling.

NUCLEAR REACTIONS ${}_{}{}^{28}{}_{}{}^{}\mathrm{Si}$+${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$, elastic and inelastic $\sigma \left(\theta \right)$, coupled channels analysis.

• Received 25 April 1978

DOI:https://doi.org/10.1103/PhysRevC.18.1039