Various wave functions that have been used to describe the ${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$ system are examined. In particular it is shown that while the ${}_{}{}^{14}{}_{}{}^{}\mathrm{N}$(γ,${\mathrm{\pi }}^{+}$${)}^{14}$${\mathrm{C}}_{\mathrm{g}.\mathrm{s}.\mathrm{}}$ reaction data at 173 and 200 MeV suggest that the Cohen and Kurath wave functions are inappropriate, the variations that these data imply can be explained in terms of core polarization effects.

• Received 16 May 1991

DOI:https://doi.org/10.1103/PhysRevC.45.230