Type:

Linear stability analysis of a HALEU-Fueled space nuclear reactor considering fuel composition and Xenon reactivity feedback effects

Journal: Nuclear Engineering and Design (00295493)Year: 15 December 2025Volume: 445Issue:

Raouf A.H.Ansarifar G.^a Rafiei M.

a :University of Isfahan - IRAN(IR) - Isfahan

DOI:10.1016/j.nucengdes.2025.114503Language: English

Abstract

A space nuclear reactor is an attractive choice for space applications such as planetary settlements and space exploration. For safe and reliable operation, stability analysis is inevitable. This paper, for the first time, presents the stability analysis of a space nuclear reactor considering various fuel compositions and different stability methods. To this end, the dynamics of a space nuclear reactor core designed with High-Assay Low-Enriched Uranium (HALEU) fuel are modeled using neutronic and reactivity feedback models. The stability analysis is carried out using linear stability methods. This comprehensive analysis provides crucial insights for the design and operation of space nuclear reactors, enhancing their safety and reliability for future space missions. © 2025 Elsevier B.V.