Abstract
A concise survey of the current status of two-body photodisintegration of the trinucleons in the region of the giant resonance is presented. Calculations neglecting both final-state interactions (FSI) and M1 transitions are presented using the Reid soft-core, Paris and Bonn potentials. D-wave contributions to these reactions are not in agreement in the literature. The present results indicate that approximately (10±4)% of the cross section is due to constructive transitions involving the D-waves. Furthermore, E2 contributions at a photon excitation energy of ∼ 12.5 MeV are found to be approximately 2% for 3He(γ,p)d and 0.1% for 3H(γ,n)d. In addition, fore-aft asymmetry calculations indicate markedly different contributions from E1–E2 interference in a comparison of the 3He and 3H systems.
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