The pion-${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ elastic scattering is studied via a parameter-free theoretically deduced optical potential based on a four-$\alpha$-particle model for ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$. The differential and total cross sections are calculated from the (3,3) resonance to the low energy region. The results are compared with the experimental data, and satisfactory agreement is obtained.

• Received 15 May 1984

DOI:https://doi.org/10.1103/PhysRevC.30.1248