Inelastic Pion Double Charge Exchange on<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">O</mml:mi></mml:mrow><mml:mprescripts/><mml:mrow/><mml:mrow><mml:mn>16</mml:mn></mml:mrow><mml:mrow/><mml:mrow/></mml:mmultiscripts></mml:mrow></mml:math>at 240 MeV

The deep-inelastic double-charge-exchange reaction $^{16}\mathrm{O}({\ensuremath{\pi}}^{+}, {\ensuremath{\pi}}^{\ensuremath{-}})$ has been measured at 50\ifmmode^\circ\else\textdegree\fi{}, 85\ifmmode^\circ\else\textdegree\fi{}, and 130\ifmmode^\circ\else\textdegree\fi{} with 240-MeV incident pions. The doubly differential cross section is peaked at low outgoing pion energies, as is expected from a double-scattering process, and is nearly isotropic. The integrated cross section is 5.8\ifmmode\pm\else\textpm\fi{}0.9 mb. The shape of the differential cross section suggests that the low-energy tail in $^{16}\mathrm{O}({\ensuremath{\pi}}^{+}, {\ensuremath{\pi}}^{+\ensuremath{'}})$ scattering at the same energy also arises from double scattering.