Impact of delayed neutron constants on reactivity effects measured in a fast reactor

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Delayed neutron parameters of fast VENUS-F reactor core configurations are determined with Monte Carlo calculations using various nuclear data libraries. Differences in the calculated effective delayed neutron fraction and the impact of the delayed neutron data (6- or 8-group precursors) that are applied in the experimental data analysis on the measured reactivity effects are studied. Considerable differences are found due to application of 235U and 238U delayed neutron data from JEFF, JENDL and ENDF evaluations.


Original languageEnglish
Article number03004
Pages (from-to)1-9
Number of pages9
JournalEPJ Web of Conferences
Publication statusPublished - 5 Jun 2019


  • VENUS-F, fast reactor, delayed neutron fraction, delayed neutrons, reactivity effects, precursor, Monte Carlo

ID: 5707376