Positive photopion production from 12,13C using tagged photons

Abstract Angular distributions of positive pions to residual states in 12 B and 13 B at excitation energies up to 20 MeV were measured using tagged photon facility at SAL. Strong spin-isospin flip ( Δ S=1, Δ T=1) states are clearly observed in the excitation spectra of both 12 B and 13 B. Present data were found to be in good agreement with existing data. J.C. Kim and H.T. Chung gratefully acknowledges the support of SNU Daewoo Research Fund. K. Shoda and H. Tsubota want to thank the Monbusho International Scientific Research Program No. 63044011 for supporting this work.