\begin{document}$^{181}{\rm{Ta}}(\gamma,3{n})^{178{\rm{m,g}}}{\rm{Ta}}$\end{document} was investigated with the beam from the NSC KIPT electron linear accelerator LUE-40. The measurements were performed using the residual γ-activity method. The bremsstrahlung flux-averaged cross-sections \begin{document}$\langle{\sigma(E_{\rm{\gamma max}})}\rangle$\end{document}, \begin{document}$\langle{\sigma(E_{\rm{\gamma max}})}\rangle_{\rm{m}}$\end{document}, \begin{document}$\langle{\sigma(E_{\rm{\gamma max}})}\rangle_{\rm{g}}$\end{document} and the isomeric ratio of the reaction products \begin{document}$d(E_{\rm{\gamma max}})$\end{document} were measured. The theoretical values of the averaged cross-sections and isomeric ratio were calculated using the partial cross-sections from the TALYS1.95 code for different level density models \begin{document}$LD$\end{document} 1-6. The obtained experimental \begin{document}$d(E_{\rm{\gamma max}})$\end{document} agree with the data in the literature, but differ from the theoretical values in absolute magnitude and the behavior of the energy dependence. A comparison of the determined averaged cross-sections with the calculated cross-sections showed the best agreement for the case of the \begin{document}$LD$\end{document} 5 model."> Isomeric ratio of the <sup>181</sup>Ta(<i>γ</i>, 3<i>n</i>)<sup>178m,g</sup>Ta reaction products at energy <i>E</i><sub><i>γ</i>max</sub> up to 95 MeV -
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