Pion-Nucleon Single Charge Exchange at $T_{\pi^-}$ = 10.6, 20.6, and 39.4 MeV

Measurements will be presented for the differential cross sections for $\pi^- p \rightarrow \pi^o n$ near $0^o, 90^o,$ and $180^o$ at $T_{\pi^-}$ = 10.6, 20.6, and 39.4 MeV ($P_{\pi^{-}}$ = 55.4, 78.6, and 112.0 MeV/c) from LAMPF Experiment 882. These data include the lowest energies ever measured for this interaction and are the only low-energy data to cover the entire angular region from $0^{o}$ to $180^{o}$. The results are compared with the partial wave analyses and potential models. The goal of determination of the differential cross sections to better than 10{\%} has been obtained by these measurements.