The relativistic pionic stripping formalism is used to study pion production data on ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}$ and ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}$ in order to determine the appropriate form of the pion-nucleon vertex and to determine whether pionic stripping is the dominant mechanism for pion production.

[NUCLEAR REACTIONS Proton induced pion production, relativistic pionic stripping, ${}_{}{}^{12}{}_{}{}^{}\mathrm{C}(p,{\pi }^{+}){}_{}{}^{13}{}_{}{}^{}\mathrm{C}$, ${}_{}{}^{40}{}_{}{}^{}\mathrm{Ca}(p,{\pi }^{+}){}_{}{}^{41}{}_{}{}^{}\mathrm{Ca}$; calculated angular distributions, energy dependence (near threshold).]

• Received 18 July 1977

DOI:https://doi.org/10.1103/PhysRevC.17.219