Independent yields of Kr isotopes at photofission of 232Th and 238U

The yields of the primary fission fragments - Kr isotopes - at the photofission of 232Th and 238U were measured. The experiments were performed at the microtron of FLNR (Flerov Laboratory of Nuclear Reactions), JINR, with the energy of the accelerated electrons 25 MeV. The methodic of fission fragments transportation by the gas flow through the capillary and condensation of the inert gases in the cryostat at the liquid nitrogen temperature was used. The fission fragments of other elements were stopped by the filter on the entrance of the capillary. The identification of the Kr isotopes was performed using the γ-spectra of their daughter products. The mass distribution of the Kr isotopes independent yields was obtained and the comparison with yields at the prompt and thermal neutron fission was discussed