Integrated photonuclear cross section for ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$

A large discrepancy is found between the value for the integrated total photonuclear cross section for ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}$ determined from the sum of the partial cross sections and that obtained from a total photon absorption measurement.

NUCLEAR REACTIONS ${}_{}{}^{16}{}_{}{}^{}\mathrm{O}(\gamma , \mathrm{tot}:E_{\gamma })$, ($\gamma , \mathrm{partial}:E_{\gamma }$): integrated cross sections; sum rule; meson-exchange factor $K$, $A$ dependence.