Study on neutron spectrum for effective transmutation of minor actinides in thermal reactors

摘要: Abstract The transmutation of minor actinides (MAs) has been investigated in thermal reactor cells using mixed oxide fuel with MAs. effect neutron spectra on is studied by changing the spectra. Five rates are compared: direct fission incineration rate, capture consumption overall rate and inventory difference rate. relations between these their dependence spectrum were investigated. To effectively incinerate MAs it necessary to maximize These become maximum when fraction neutrons below 1 eV about 8% for case where MA addition 1–3%. When over 5%, very hard spectrum.