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Title: Characterization of swift heavy ion irradiation damage in ceria

Journal Article · · Journal of Materials Research
DOI:https://doi.org/10.1557/jmr.2015.43· OSTI ID:1246913
 [1];  [2];  [3];  [4];  [5];  [6];  [7]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  3. Institute for Nuclear Research Center (SCK-CEN), Boeretang (Belgium)
  4. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  5. GSI Helmholtzzentrum, Darmstadt (Germany)
  6. GSI Helmholtzzentrum, Darmstadt (Germany); Technische Univ. Darmstadt, Darmstadt (Germany)
  7. Univ. of Wisconsin-Madison, Madison, WI (United States)

Swift heavy ion induced radiation damage is investigated for ceria (CeO2), which serves as a UO2 fuel surrogate. Microstructural changes resulting from an irradiation with 940 MeV gold ions of 42 keV/nm electronic energy loss are investigated by means of electron microscopy accompanied by electron energy loss spectroscopy showing that there exists a small density reduction in the ion track core. While chemical changes in the ion track are not precluded, evidence of them was not observed. Classical molecular dynamics simulations of thermal spikes in CeO2 with an energy deposition of 12 and 36 keV/nm show damage consisting of isolated point defects at 12 keV/nm, and defect clusters at 36 keV/nm, with no amorphization at either energy. Furthermore, inferences are drawn from modeling about density changes in the ion track and the formation of interstitial loops that shed light on features observed by electron microscopy of swift heavy ion irradiated ceria.

Research Organization:
Energy Frontier Research Centers (EFRC) (United States). Center for Materials Science of Nuclear Fuel (CMSNF); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-06NA25396
OSTI ID:
1246913
Report Number(s):
LA-UR-14-23061; applab; PII: S0884291415000436
Journal Information:
Journal of Materials Research, Vol. 30, Issue 09; ISSN 0884-2914
Publisher:
Materials Research SocietyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 20 works
Citation information provided by
Web of Science

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Cited By (5)

Changing the rules of the game: used fuel studies outside of a remote handling facility journal November 2019
A new non-diffusional gas bubble production route in used nuclear fuel: implications for fission gas release, cladding corrosion, and next generation fuel design journal January 2020
Defects induced in cerium dioxide single crystals by electron irradiation journal January 2018
Optical spectroscopy study of modifications induced in cerium dioxide by electron and ion irradiations journal April 2019
Hexagonal close-packed high-entropy alloy formation under extreme processing conditions journal January 2019

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