[en] In the first experiment to use the superconducting RF cavity at LAMPF known as the Scruncher, cross sections have been measured for the 1+ doublet in ¹²C by 50 MeV πr^± scattering. The cross section ratio of the isoscalar to the isovector states was found to be 6.8 ± 1.3 for π⁺+ scattering and 3.9 ± 1.4 for π^- scattering. These ratios give an isospin mixing matrix element H₀₁, of 119 ± 40 key, in good agreement with the average value of 123 ± 26 key deduced from previous pion-scattering data and with values deduced from other probes. The ratio of π⁺ + p to π^- + p cross sections was determined experimentally to be 2.60 ± 0.11, in agreement with a theoretical value of 2.85. The agreement of these results indicates that the impulse approximation is valid at 50 MeV. Cross sections were also measured for the elastic and collective states in ¹²C and were generally described well by distorted wave Born approximation calculations published previously