Photoneutron cross-sections for the reactions $$^{181}\mathrm{Ta}(\gamma ,\textit{x}n; \textit{x} = 1$$–$$8)^{181-\textit{x}}\mathrm{Ta}$$ AT $$\hbox { {E}}_\gamma {_\mathrm{max}}=$$ 80–95 MeV

Isomeric ratio of the 181Ta(γ, 3n)178m,gTa reaction products at energy E γmax up to 95 MeV

“…5, they are shown only for 32 MeV). A joint analysis of the values from [12, 24,25,27] and this work shows that the experimental values of are grouped near a constant value equal to 0.335 0.008. As the value of from [28] is significantly higher than all the experimental results, it was not used in the analysis.…”

“…(color online) Isomeric ratios of the reaction products. Experimental data: rhombuses -the results of this work (filled) and from [25] (empty), star - [24], circle -[12], square - [27], triangle - [28]. Solid lines -calculations of using TALYS1.95 for the models 1-6 (the lines are marked as in Fig.…”

“…The comparison showed that the calculated values were two times greater than the experimental values. The data presented in [24,28], measured at the same γ-quanta energy, differ significantly. The results reported in [27] and [25] in the energy ranges of 22-32 and 80-95 MeV, respectively, show close values of the isomeric ratio.…”

“…New data for these reactions were presented in [23]. Regarding the study of the photodisintegration of tantalum at higher energies of the bremsstrahlung γ-quanta, the results for = 55 MeV in the form of weighted average yields and at = 67.7 MeV in the form of a relative yield were presented in [24] and [12], respectively. In [25], experimental values of the total bremsstrahlung flux-averaged cross-sections were obtained for the photoneutron reactions at 181 Ta with emission of up to 8 neutrons at = 80-95 MeV and comparisons were made with the calculations using the Talys1.9 code with default parameters.…”

“…Although numerous experiments on the photodisintegration of 181 Ta [23] have been performed, the issue of the isomeric ratio for the products of the reaction 181 Ta has not been sufficiently studied. Thus, the experimental values for the product nuclei Ta were presented in [24,27,28]. From the data reported in [12] at = 67.7 MeV, it is possible to obtain an estimated value of equal to 0.28 0.08.…”