Fusion Science and Technology -- ANS / Publications / Journals / Fusion Science and Technology

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  Nuclear's future discussed at MURR expansion
  ANS Executive Director/CEO Craig Piercy recently spoke on nuclear power’s potential for answering today’s energy demands as part of the Distinguished Lecture Series at the University of Missouri. He also took part in the ribbon cutting for a large addition to the University of Missouri Research Reactor (MURR).
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A new benchmark experiment on lead with DT neutrons was designed and carried out with a large lead assembly covered with Li₂O blocks at JAEA/FNS to validate nuclear data of lead for measurement of reaction rates without impact of background neutrons. The experiment was analyzed by using the MCNP5-1.40 code with the latest nuclear data libraries, ENDF/B-VII.1, JEFF-3.2 and JENDL-4.0. The calculated reaction rates underestimated the measured ones with the depth. Moreover, the tendencies of C/Es were different among the nuclear data libraries. In order to find out the reasons of the differences, we examined reaction cross-sections of lead in the nuclear data libraries in detail. The potential reactions to cause the underestimation issue of the calculated reaction rates were indicated through this study.