Yields of krypton isotopes at photofission of 232Th and 238U nuclei

The yield of the krypton isotopes nuclei with mass number 89-93 during 232Th and 238U nuclei photofission are measured. The experiments are carried out at the JINR microtron with accelerated electron energy 25 MeV. The methodology of transfer of fragments escaped from target with gaseous flow along the capillary and condensation of Kr and Ar inert gases in cryostat at the liquid nitrogen temperature is applied. The fragments of all the remained elements are retained through the filter at the capillary inlet. Identification of the Kr isotopes was accomplished by the γ-spectra of their daughter products. The distribution of the Kr isotopes independent yie;ds by their mass numbers is obtained; comparison of these yields with analogous values at the fission by the fast and thermal neutrons of the Th isotopes is carried out