On the Exchange Magnetic Moments

The exchange magnetic moment operators for the two-nucleon system are obtained in terms of photopion production matrix elements. This photopion production part is closely related with the pion-nucleon scattering part, thus enabling one to use pi -N scattering experi-mental values in the expressions of the exchange magnetic moment operators. These formulas are applied to eases of triton magnetic moment and those of heavy nuclei (the Fermi gas model). In the former case, rather a good result is obtained, while in the latter it is found that exchange magnetic moments can explain only small parts of the deviations from the Schmidt lines. (auth)