Conference paper
Few-body physics with real photons at TAGX
Koichi Maruyama
; Center for Nuclear Study, University of Tokyo, Midoricho, Tanashi, Tokyo 188-0002, Japan
Abstract
The proton-neutron (pn) pairs in light nuclei such as 3He, 4He, and 6Li have been investigated with the photon beam from the 1.3-GeV Tokyo Electron Synchrotron. Photodisintegration of the nuclei has been measured in the ∆-resonance region with the large-acceptance spectrometer TAGX. The strengths of the photon absorption by the pn-pairs vary depending on nuclei and on the photon energy. The pair in 3He is found to be three-times more active than the deuteron in absorbing the photon. The photon absorption cross sections by the pn-pairs in 4He show a jump at the pion-production threshold. The total cross sections for five 4He-breakup channels including new data are illustrated.
Keywords
photodisintegration; photon absorption; 3He; 4He; pn-pair; ∆-resonance
Hrčak ID:
305303
URI
Publication date:
1.3.1999.
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