Abstract

Differential cross sections for /sup 3/He(..gamma..,d)/sup 1/H for incident energies between 150 and 350 MeV at center-of-mass proton angles near 60/sup 0/ and 90/sup 0/ have been measured with an absolute uncertainty of less than 6%. The experiment used a single-arm spectrometer, a gas target, and an uncollimated bremsstrahlung beam. The results are in good agreement with new measurements of the time-reversed reaction, /sup 2/H(p,/sup 3/He)..gamma.., giving no evidence for a violation of time-reversal invariance. The differential cross sections decrease smoothly with energy and show only a small contribution from the ..delta..(1232) resonance.

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