PHOTOPION PRODUCTION IN H-3 AND HE-3

The photopion production of He-3(gamma, pi+)H-3 has been calculated by the distorted-wave impulse approximation in order to include the fina l state interaction (FSI) between pi+ and H-3. The optical potentials used to describe the FSI are the Stricker, McManus, and Carr potential and the Kim potential. The inclusion of the FSI improves significantl y the theoretical estimations compared with the results of plane-wave impulse approximation. In case of low momentum transfer the contributi on of E1+(3/2) amplitude is shown to play an additional role in obtain ing an agreement with the experimental results.