The results for ${\pi }^{\pm }$+${}_{}{}^9{}_{}{}^{}\mathrm{Be}$ elastic scattering at $E_{\mathrm{lab}}=162\mathrm{}$ MeV are shown to provide evidence for quadrupole contributions to the elastic scattering of pions. The strong-coupling rotational model is used to relate the measured inelastic scattering cross sections to the elastic scattering cross sections.

INTERMEDIATE ENERGY ${\pi }^{\pm }$+${}_{}{}^9{}_{}{}^{}\mathrm{Be}$ elastic and inelastic scattering, $E_{\mathrm{lab}}=162\mathrm{}$ MeV, optical-model analysis, quadrupole scattering.

• Received 17 July 1978

DOI:https://doi.org/10.1103/PhysRevC.18.2223