Atomic structure of ion tracks and microstructure evolution in oxides irradiated with swift heavy ions

K. Yasuda, T. Yamamoto, S. Takaki, S. Matsumura, N. Ishikawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have investigated the structure of ion tracks in magnesium aluminate spinel (MgAl2O4) and ceria (CeO2) irradiated with 200 MeV Xe ions. Transmission electron microscopy (TEM) and scanning transmission electron microscopy (STEM) techniques have shown that ion tracks in both materials retain crystallinity. The atomic density inside the core damage region of ion tracks is decreased to generate interstitial atoms at the peripheral region. Overlap of high-density electronic excitation at high fluence has revealed the development of dislocation structure in both MgAl 2O4 and ceria CeO2: the preferential occupation of cations in tetrahedral sites was found in MgAl2O4, and the formation of small sub-grains was observed in CeO2.

Original languageEnglish
Title of host publication11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013
PublisherBelgian Nuclear Research Center
Pages7-11
Number of pages5
ISBN (Print)9781629938288
Publication statusPublished - Jan 1 2013
Event11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013 - Bruges, Belgium
Duration: Aug 5 2013Aug 8 2013

Publication series

Name11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013

Other

Other11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013
CountryBelgium
CityBruges
Period8/5/138/8/13

All Science Journal Classification (ASJC) codes

  • Nuclear Energy and Engineering

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