We have calculated single and double charge exchange of pions on ${}_{}{}^9{}_{}{}^{}\mathrm{Be}$, ${}_{}{}^{13}{}_{}{}^{}\mathrm{C}$, ${}_{}{}^{11}{}_{}{}^{}\mathrm{B}$, and ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}$. The results are in rough agreement with the currently available experimental results.

[NUCLEAR REACTIONS ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}({\pi }^{+},{\pi }^0)$, $E=180\mathrm{}$ MeV; calculated $\sigma \mathrm{}\left(E\right)\mathrm{}$; ${}_{}{}^{18}{}_{}{}^{}\mathrm{O}({\pi }^{+},{\pi }^{-})$, $E=180\mathrm{}$ MeV; calculated $\sigma \mathrm{}\left(E\right)\mathrm{}$; ${}_{}{}^{13}{}_{}{}^{}\mathrm{C}({\pi }^{+},{\pi }^0)$, $E=30-200\mathrm{}$ MeV; calculated $\sigma \mathrm{}\left(E\right)\mathrm{}$; ${}_{}{}^{13}{}_{}{}^{}\mathrm{C}({\pi }^{+},{\pi }^0)$, $E=180\mathrm{}$ MeV; calculated $\sigma \left(\theta \right)$; ${}_{}{}^9{}_{}{}^{}\mathrm{Be}({\pi }^{+},{\pi }^0)$, $E=30-250\mathrm{}$ MeV; calculated $\sigma \mathrm{}\left(E\right)\mathrm{}$; ${}_{}{}^9{}_{}{}^{}\mathrm{Be}({\pi }^{+},{\pi }^{-})$, $E=30-250\mathrm{}$ MeV; calculated $\sigma \mathrm{}\left(E\right)\mathrm{}$ to $T=\frac{3}{2}$ final states; ${}_{}{}^9{}_{}{}^{}\mathrm{Be}({\pi }^{+},{\pi }^0)$, $E=175\mathrm{}$ MeV, calculated $\sigma \left(\theta \right)$ to ground and sum of final states; ${}_{}{}^9{}_{}{}^{}\mathrm{B}({\pi }^{+},{\pi }^{-})$, $E=175\mathrm{}$ MeV, calculated $\sigma \left(\theta \right)$ to $T=\frac{3}{2}$ final states; ${}_{}{}^{11}{}_{}{}^{}\mathrm{B}({\pi }^{+},{\pi }^0)$, $E=20-250\mathrm{}$ MeV, calculated $\sigma \mathrm{}\left(E\right)\mathrm{}$ to ground and sum of final states.]

• Received 18 October 1973

DOI:https://doi.org/10.1103/PhysRevC.9.1340