Cross sections have been measured for the ${}_{}{}^3{}_{}{}^{}\mathrm{He}$(γ,pp)n reaction with tagged photons in the range ${\mathit{E}}_{\gamma }$ =161–208 MeV using the Saskatchewan-Alberta Large Acceptance Detector (SALAD). The protons were detected over a range of polar angles of 40°–140° and azimuthal angles of 0°–360° with an energy threshold of 40 MeV. Comparisons are made with a microscopic calculation which includes one-, two-, and three-nucleon absorption mechanisms. One- and two-nucleon processes, including final-state interactions, are unable to account for the measured cross sections. The addition of three-nucleon absorption diagrams gives roughly the right strength, but the distribution in phase space is in disagreement with the data. © 1996 The American Physical Society.

• Received 8 July 1996

DOI:https://doi.org/10.1103/PhysRevC.54.2175