Abstract
ABS>The differential cross section and proton polarization were computed for a gamma energy of 164 Mev. For the deuteron wave fnction and the interaction operator of El, E2, and spin flip M1, two types of interaction operators for each transition are used in order to determine retardation effect. Comparing the results due to the interactions, the retardation effect gives a total cross section larger than that for the conventional interaction. The retardation effect really gives the larger cross section sigma /sub t/ (E1) for the E1 transition, but larger cross sections are found in conventional interaction for E2 and spin flip M1 transitions. This is unexpected. Both angular distributions are similar but the conventional interaction shows a forward asymmetry depending on the larger E2 transition amplitudes. Total cross sections and angular distributions do not agree with experimental data, and have rather smaller values. (N.W.R.)
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