  The intensities of the ten strongest $\gamma$-ray transitions following the
$^{111}Sn$ ($T_{1/2}$=35.3 m) decay have been determined via comparison of the
two sets of the experimental photonucleon reaction yields driven using the
traditional activation equation and the activation equation for the genetically
coupled radioactive nuclei. The found absolute intensities of the $\gamma$-ray
transitions in question were happened to be noticeably different from the
currently recommended values.
