Neutronic performance analysis of U-Mn fuel and MgO-BeO tube material in the dual fluid reactor

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dc.contributor.authorDaydas, Semra
dc.contributor.authorTiftikci, Ali
dc.date.accessioned2026-04-25T14:19:59Z
dc.date.available2026-04-25T14:19:59Z
dc.date.issued2026
dc.departmentSinop Üniversitesi
dc.description.abstractThis study investigates the feasibility of using a Uranium-Manganese (U-Mn) alloy as an alternative fuel for the Dual Fluid Reactor (DFRm) concept to increase the temperature margin, along with a Magnesium Oxide-Beryllium Oxide (MgO-BeO) ceramic fuel tube. Neutronic analyses were performed using the SERPENT 1.1.7 Monte Carlo code with the ENDF/B-VII cross-section library to evaluate fuel performance, reactivity behavior, and safety margins. The results indicate that the U-Mn fuel exhibits lower keff values and shorter fuel cycle length to those of the U-Cr fuel, while providing the advantage of a lower eutectic temperature. Reactivity coefficients found to be negative for both fuel and coolant with the SiC fuel tube, ensuring inherent safety during temperature excursions. However, for the MgO-BeO configuration, the reactivity coefficients for MgO-BeO were found to be positive, which represents a critical drawback of this material; hence, further geometrical optimization is required. Consequently, although U-Mn fuel maintains negative temperature feedback under SiC-based configurations, alternative tube materials such as MgO-BeO require further optimization to ensure stable and inherently safe reactivity behavior throughout the fuel cycle. Future research could focus on optimizing reactor geometry to enhance the utilization potential of U-Mn fuel.
dc.identifier.doi10.1016/j.net.2025.104079
dc.identifier.issn1738-5733
dc.identifier.issue4
dc.identifier.orcid0000-0003-3323-4092
dc.identifier.scopus2-s2.0-105029717103
dc.identifier.scopusqualityQ1
dc.identifier.urihttps://doi.org/10.1016/j.net.2025.104079
dc.identifier.urihttps://hdl.handle.net/11486/8302
dc.identifier.volume58
dc.identifier.wosWOS:001644183500001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherKorean Nuclear Soc
dc.relation.ispartofNuclear Engineering and Technology
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WOS_20260420
dc.subjectDual fluid reactor
dc.subjectMolten-salt reactor
dc.subjectLead-cooled reactor
dc.subjectHigh temperature reactor
dc.subjectUranium-manganese
dc.subjectMagnesium Oxide-Beryllium oxide
dc.titleNeutronic performance analysis of U-Mn fuel and MgO-BeO tube material in the dual fluid reactor
dc.typeArticle

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