The evolution mechanism of the dislocation loops in irradiated lanthanum doped cerium oxide

Yinbin Miao, Dilpuneet Aidhy, Wei Ying Chen, Kun Mo, Aaron Oaks, Dieter Wolf, James F. Stubbins

Research output: Contribution to journalArticle

Abstract

Cerium dioxide, a non-radioactive surrogate of uranium dioxide, is useful for simulating the radiation responses of uranium dioxide and mixed oxide fuel (MOX). Controlled additions of lanthanum can also be used to form various levels of lattice oxide or anion vacancies. In previous transmission electron microscopy (TEM) experimental studies, the growth rate of dislocation loops in irradiated lanthanum doped ceria was reported to vary with lanthanum concentration. This work reports findings of the evolution mechanisms of the dislocation loops in cerium oxide with and without lanthanum dopants based on a combination of molecular statics and molecular dynamics simulations. These dislocation loops are found to be b=1/ 3âŒ

Original languageEnglish (US)
Pages (from-to)209-217
Number of pages9
JournalJournal of Nuclear Materials
Volume445
Issue number1-3
DOIs
StatePublished - Feb 1 2014

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ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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