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Title: Thermal expansion in UO2 determined by high-energy X-ray diffraction

Journal Article · · Journal of Nuclear Materials
 [1];  [2];  [3];  [4];  [4];  [5];  [2]
  1. European Spallation Source ESS AB, Lund (Sweden)
  2. Argonne National Lab. (ANL), Argonne, IL (United States)
  3. Argonne National Lab. (ANL), Argonne, IL (United States); Stony Brook Univ., Stony Brook, NY (United States); Materials Development, Inc., Arlington Heights, IL (United States)
  4. Argonne National Lab. (ANL), Argonne, IL (United States); Materials Development, Inc., Arlington Heights, IL (United States)
  5. Stony Brook Univ., Stony Brook, NY (United States); Brookhaven National Lab. (BNL), Upton, NY (United States)

In this study, we present crystallographic analyses of high-energy X-ray diffraction data on polycrystalline UO2 up to the melting temperature. The Rietveld refinements of our X-ray data are in agreement with previous measurements, but are systematically located around the upper bound of their uncertainty, indicating a slightly steeper trend of thermal expansion compared to established values. This observation is consistent with recent first principles calculations.

Research Organization:
Brookhaven National Lab. (BNL), Upton, NY (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
SC00112704; AC02-06CH11357; DE SC0007564; FG02-09ER46650
OSTI ID:
1346746
Alternate ID(s):
OSTI ID: 1328451
Report Number(s):
BNL-113574-2017-JA; TRN: US1701819
Journal Information:
Journal of Nuclear Materials, Vol. 479, Issue C; ISSN 0022-3115
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science