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Photon absorption on a neutron-proton pair in 3He

P. Wilhelm, J. A. Niskanen, H. Arenhövel

nucl-tharXiv:nucl-th/9405029

Abstract

The cross section of the reaction 3He(γ,pn)pspec in the energy range 150 - 450 MeV has been calculated in a quasifree two-body model and compared with a recent kinematically complete experiment. In comparison with free deuteron disintegration the cross section is increased by a factor of about 1.5 in reasonable agreement with the data for photon energies above 200 MeV. At lower energies the data deviate from the two-body behaviour and thus suggest a more important role of the spectator requiring a more exact treatment.

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