Study on measurement method of ²³⁵U isotope abundance of fuel assembly for research reactor based on a compact neutron generator

Neutron activation analysis and mass spectrometry are used as ²³⁵U isotope abundance of fuel assembly. Neutron activation analysis and mass spectrometry can't be used as an effective measurement means of the ²³⁵U Isotope Abundance of Fuel Assembly. Meanwhile they aren't also used as a verification mean of ²³⁵U isotopic abundance the fuel assembly management and transportation because of their shortcomings of large measurement equipment and sampling. So based on a compact neutron generator, a rapid and portable measurement method for ²³⁵U Isotope Abundance of Fuel Assembly is significant. According to the linear correlation relating the ratio of average yield for the specific fissile nuclides to ²³⁵U Isotope Abundance, the samples whose ²³⁵U Isotope Abundance is 10%-90% are successfully measured. It provides the experimental basis for the verification of ²³⁵U Isotope Abundance of the fuel assembly for the research reactor. (authors)