The effects of Xe/Cs occupation on the thermal transport properties of U3Si: A first-principles study
Source abstract
Abstract
In this study, the effects of fission products (FPs) Xe and Cs on the thermal conductivity for U 3Si, which has been proposed to be an alternative nuclear fuel for UO 2 due to its high thermal conductivity and high uranium density, are systematically investigated based on first-principles calculations. It is shown that Xe/Cs occupation in U 3 Si results in thermal conductivity decreasing from 15.6 to 6.5 ∼ 14.0 W/mK at 300 K and from 31.7 to 12.9 ∼ 29.6 W/mK at 1000 K. This is mainly resulted from the weakened chemical bonding, decreased phonon group velocity, as well as destroyed periodic structures caused by Xe/Cs occupation.
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Research context
OpenAlex topics: Nuclear Materials and Properties · Nuclear reactor physics and engineering · Nuclear materials and radiation effects
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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