Detection of thermal and resonance neutrons using oxide scintillators

Results are presented for pulse amplitude spectra of crystals based on comp lex oxides irradiated in mixed fields of neutron and gamma-radiation. These crystals - CdWO4 (CWO). Gd2Si2O5 (Ce) (GSO(Ce)) and NaBi(WO4)(2) - include elements with large radiation capture section of thermal and resonanse neu trons. It has been shown that it is possible in principle to separately det ect products of nuclear reactions of radiation capture of neutrons on Cd. W , Gd and Na nuclei. This is realized by the appropriate choise of energy wi ndows during detection of nuclear reaction products and the accompanying ga mma-radiation using scintillators with different decay times and different interaction cross-sections, as well as with the help of screens selectively absorbing as well as with the help of screens selectively absorbing neutro ns or gamma-quanta.