Quasielastic scattering of pions from /sup 16/O at energies around the. delta. (1232) resonance

Inelastic pion scattering from $^{16}\mathrm{O}$ has been studied by measuring the spectrum of pions down to 40 MeV at five angles between 30\ifmmode^\circ\else\textdegree\fi{} and 134\ifmmode^\circ\else\textdegree\fi{} for three incident pion energies: 114, 163, and 240 MeV. The spectra are dominated by a broad peak due to quasielastic scattering from a single nucleon in the nucleus. The systematics of the spectra are discussed with emphasis on the pion-nucleus interaction dynamics including the effect of absorption. The partial ${\ensuremath{\pi}}^{+}$-$^{16}\mathrm{O}$ cross sections for all nonradiative channels are estimated.