Abstract
Radiative pion capture in 12C and 16O is investigated. An effective interaction Hamiltonian based upon the CGLN theory is employed. Capture rates in 12C and 16O from Is and 2p pionic orbits are calculated by using the nuclear model of Kamimura, Ikeda and Arima for the odd parity states of 12C, and that of Walker with strong ground state correlations, for the odd parity states of 16O. The results are compared with those of the 1p-1h nuclear model under the Tamm-Dancoff and random phase approximations of Gillet and Vinh Mau. Detailed examinations are made for the transitions to low-lying states with 1 + and 2 + for 12C and with 1 −, 2 − and 3 − for 16O by using the Cohen-Kurath and the Walker models, respectively. The results are in good agreement with the recent experimental data from Berkeley.
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