Excitation of isomeric state 11/2- of nuclei with 116≤ A ≤144 in reaction ( γ,n)

Investigations of excitation of isomeric states 11/2 of nuclei with 116≤ A≤144 in photonuclear reaction (γ ,n) have been performed. Enriched isotope targets were irradiated by the betatron Bremsstrahlung, and activation method was used for the reaction yield determination. The measurements included integral cross sections of the photonuclear reactions 134Ba(γ ,n)133m,gBa, 136Ba(γ ,n)135m,gBa, 138Ba(γ ,n)137m,gBa and isomeric yield ratios of the photonuclear reactions 110Pd(γ ,n)109m,gPd, 116Cd(γ ,n)115m,gCd, 130Te(γ ,n)129m,gTe, 138Ce(γ ,n)137m,gCe, 142Nd(γ ,n)141m,gNd for 30 MeV boundary energy of the Bremsstrahlung. The results were compared with other experimental data. (authors)