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
O.S. Deiev, I. S. Timchenko, S.N. Olejnik, В.А. Кушнир, Viktor Mytrochenko, S.A. Perezhogin
Abstract
Abstract The photoneutron reaction 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 , , and the isomeric ratio of the reaction products 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 1-6. The obtained experimental 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 5 model.