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.
@article{arxiv.nucl-th/9405029,
title = {Photon absorption on a neutron-proton pair in $^3$He},
author = {P. Wilhelm and J. A. Niskanen and H. Arenhövel},
journal= {arXiv preprint arXiv:nucl-th/9405029},
year = {2009}
}
Comments
7 pages (latex) and 2 figures (postscript) available on request, MKPH-T-94-9