A comment on the thermal conductivity of (U,Pu)O2 and (U,Th)O2 by molecular dynamics with adjustment for phonon-spin scattering
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
In this study, a new approach for adjusting molecular dynamics results on UO2 thermal conductivity to include phonon-spin scattering has been used to improve calculations on Ux Pu1–x O2 and UxTh1xO2. We demonstrate that by including spin scattering a strong asymmetry as a function of uranium actinide fraction, x, is obtained. Greater degradation is shown for UxTh1–xO2 than UxPu1-xO2. Minimum thermal conductivities are predicted at U0.97Pu0.03O2 and U0.58Th0.42O2, although the degradation in UxPu1–xO2 is negligible relative to pure UO2.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE)
- Grant/Contract Number:
- AC52-06NA25396
- OSTI ID:
- 1296685
- Report Number(s):
- LA-UR-16-21839
- Journal Information:
- MRS Advances, Journal Name: MRS Advances; ISSN 2059-8521
- Publisher:
- Materials Research Society (MRS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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