Differential cross sections are reported for (${\pi }^{+}$,$p$) reactions to discrete final states over the range $\theta =20-95\mathrm{} \left(116\mathrm{}°\right)$ and for the inclusive (${\pi }^{\pm }$,$p$) reactions in ${}_{}{}^6{}_{}{}^{}\mathrm{Li}$ at $\theta =20\mathrm{}°$ to the continuum. The continuum cross sections indicate the predominance of the two-nucleon pion absorption mechanism where (${\pi }^{-}$,$p$) shows the importance of multiple (charge-exchange) scattering. The combined use of the exclusive and inclusive cross sections is discussed.

NUCLEAR REACTIONS ${}_{}{}^{6,7}{}_{}{}^{}\mathrm{Li}$(${\pi }^{+}$,$p$)${}_{}{}^{5,6}{}_{}{}^{}\mathrm{Li}$, $T_{\pi }=75\mathrm{}$ MeV, $\theta =20-116\mathrm{}°$, $T_{\pi }=175\mathrm{}$ MeV, ${\theta }_p=20-95\mathrm{}°$ measured $\sigma \left(\theta \right)$; ${}_{}{}^6{}_{}{}^{}\mathrm{Li}$(${\pi }^{\pm }$,$p$), $T_{\pi }=75, 175$ MeV, ${\theta }_p=20\mathrm{}°$ measured $\sigma \left(T_p\right)$; discussed reaction mechanism effects.

• Received 21 May 1979

DOI:https://doi.org/10.1103/PhysRevC.21.2681