Spectroscopic applications of the (p,π−) reaction

Using the strong selectivity of the A(p,${\pi }^{\mathrm{-}}$)A+1 reaction for population of high-spin, two-particle one-hole final states, we have located and identified several candidates for high-spin states in the sd-shell nuclei ${}_{}{}^{20}{}_{}{}^{}\mathrm{Na}$, ${}_{}{}^{24}{}_{}{}^{}\mathrm{Al}$, ${}_{}{}^{26}{}_{}{}^{}\mathrm{Si}$, ${}_{}{}^{28}{}_{}{}^{}\mathrm{P}$, ${}_{}{}^{30}{}_{}{}^{}\mathrm{S}$, and ${}_{}{}^{31}{}_{}{}^{}\mathrm{S}$. The spin assignments are based on both the strong population of the states and the stretched-state signature of the analyzing power angular distributions.