First observation of absorption of real photons byT=1p-npairs in the (γ,p) reaction

1 October 1990

journal article
research article
Published by American Physical Society (APS) in Physical Review C

Vol. 42 (4) , R1179-R1182
https://doi.org/10.1103/physrevc.42.r1179

Abstract

Excitation-energy spectra resulting from the

{}^{12}C

{}^{16}O

, and

{}^{40}{Ca}

(γ,p) reactions at 90° have been measured with tagged photons of about 61 and 77 MeV. Decay to several discrete states is discussed. Evidence is shown for an absorption process where the photon interacts with a T=1 proton-neutron pair, instead of the T=0 p-n pair implicit in the quasideuteron model.

Keywords

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