Abstract
Coincidence measurements of two nucleons from the reactions /sup 9/Be(..gamma..,pn)X and /sup 9/Be(..gamma..,pp)X have been made in the ..delta..(1232) resonance region with a tagged-photon beam. From the momentum and angular correlations between the two nucleons, two quasifree reactions, ..gamma..+''pnclzquo..-->..p+n and ..gamma..+''ppclzquo..-->..p+p, are clearly identified. The separation energy and the momentum distribution of the quasifree deuteron in /sup 9/Be are determined together with the ratio between cross sections of the two quasifree reactions.
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