Abstract
A systematic study of radiative pion capture transitions in 1p-shell nuclei has been performed. High-resolution photon spectra measured with a pair spectrometer for 6Li, 7Li, 9Be, 10B, 11B, 12C and 14N targets show transitions to low-lying bound states of 6He, 7He, 9Li, 10Be, 11Be, 12B and 14C respectively. The observed levels are predominantly analogs of isovector M1 states in the target nucleus. The measured branching ratios are compared to various shell-model calculations using nuclear wave functions constrained to fit other electromagnetic and weak properties of the same levels or their analogs. The data are found to be consistent with existing electron scattering data where they exist.
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