Reaction rates of the 113In(γ,n)112mIn and 115In(γ,n)114mIn

The integral yields of the ¹¹³In(γ,n)^112mIn (J^π=9/2⁺→J^π=4⁺) and ¹¹⁵In(γ,n)^114mIn (J^π=9/2⁺→J^π=5⁺) photonuclear reactions were measured in the bremsstrahlung end-point energy range from the respective thresholds up to 14 MeV by a conventional activation/decay technique using the ¹⁹⁷Au(γ,n)¹⁹⁶Au reaction cross sections as the standard for the absolute photon intensity determination. The metallic indium samples of the natural and enriched compositions were irradiated by the bremsstrahlung beams from thin tantalum converters of the electron linear accelerator of NSC KIPT (Kharkiv) and the microtron of IEP (Ughhorod). The integral reaction yields were determined from the activities of the nuclei-products measured by the high resolution γ-ray spectrometry technique with Ge(Li)- and HPGe-detectors. The reaction rates for the Planck spectrum of a thermal photon bath were derived for the ground state target nuclei and compared to the predictions of the statistical model of nuclear reactions.