Delta production by pion charge exchange on complex nuclei

We have used the (..pi../sup -/,..pi../sup 0/) reaction at a beam energy of 475 MeV on targets of /sup 1/H, /sup 2/H, C, and /sup 90/Zr to examine excitations near 300 MeV. At this excitation energy, delta production is expected to occur by charge exchange on a nucleon. Our (..pi../sup -/,..pi../sup 0/) results for delta production in complex nuclei are compared to those for photoabsorption, (p,n), and (/sup 3/He,t) reactions. The target mass dependence of the absorption for the three charge-exchange reactions is found to be similar.