{sup 3}He({gamma},{ital pp}){ital n} cross sections with tagged photons below the {Delta} resonance energy
- Saskatchewan Accelerator Laboratory, University of Saskatchewan, Saskatoon, Saskatchewan, S7N 5C6 (CANADA)
- Centre for Subatomic Research, University of Alberta, Edmonton, Alberta, T6G 2N5 (CANADA)
Cross sections have been measured for the {sup 3}He({gamma},{ital pp}){ital n} reaction with tagged photons in the range {ital E}{sub {gamma}} =161{endash}208 MeV using the Saskatchewan-Alberta Large Acceptance Detector (SALAD). The protons were detected over a range of polar angles of 40{degree}{endash}140{degree} and azimuthal angles of 0{degree}{endash}360{degree} 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. {copyright} {ital 1996 The American Physical Society.}
- OSTI ID:
- 389404
- Journal Information:
- Physical Review, C, Vol. 54, Issue 5; Other Information: PBD: Nov 1996
- Country of Publication:
- United States
- Language:
- English
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