Excitation of the isobaric analog state ofHo165by pion single-charge exchange

Forward-angle differential cross sections for the ${}_{}{}^{165}{}_{}{}^{}\mathrm{Ho}$(${\mathrm{\pi }}^{+}$,${\mathrm{\pi }}^0$ ${)}^{165}$Er(IAS) reaction have been measured at $T_{\pi }$=98.0, 163.2, and 228.3 MeV in the angular range &≲14°. The shapes of the angular distributions at 98.0 and 163.2 MeV are compared to predictions arising from the strong absorption model of pion single-charge exchange scattering. Extrapolated 0° cross sections are compared with trends previously established with mostly spherical and near-spherical nuclei. The measurement demonstrates the possibility of using the (${\pi }^{+}$,${\pi }^0$) reaction for studying neutron density deformations in oriented ${}_{}{}^{165}{}_{}{}^{}\mathrm{Ho}$.