Photon absorption on nucleon pairs

MacGregor, I.J.D. (1993) Photon absorption on nucleon pairs. In: International Conference on Nuclear and Particle Physics, Glasgow, UK, 30 Mar - 1 Apr 1993, pp. 93-111.

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Recent developments in photon induced reactions at energies above the Giant Resonance are reviewed. Below the pion production threshold absorption on nucleon pairs is thought to be the dominant mechanism. Detailed analyses of (gamma,pn) experiments have shown that this reaction can be described well in terms of the phenomenological quasideuteron model. The effects of final state interactions do not appear to strongly bias the measured data. The cross section for the (gamma,pp) reaction is an order of magnitude smaller and the evidence available suggests a more complex mechanism with one nucleon being reabsorbed in the residual nucleus. Absorption on 2-nucleon pairs remains important above the pion threshold despite strong competition from quasifree pion production. In addition to 2-nucleon absorption there is some evidence in (gamma,2N) reactions of absorption on 3-nucleon clusters.

Item Type:Conference Proceedings
Additional Information:Institute of Physics Conference Series Number 133, ISBN 0750302895
Glasgow Author(s) Enlighten ID:MacGregor, Professor Douglas
Authors: MacGregor, I.J.D.
Subjects:Q Science > QC Physics
College/School:College of Science and Engineering > School of Physics and Astronomy
Research Group:Nuclear Physics

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