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

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 proceeding › Conference 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 language	English
Title of host publication	11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013
Publisher	Belgian Nuclear Research Center
Pages	7-11
Number of pages	5
ISBN (Print)	9781629938288
Publication status	Published - Jan 1 2013
Event	11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013 - Bruges, Belgium Duration: Aug 5 2013 → Aug 8 2013

Publication series

Name	11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013

Other

Other	11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013
Country	Belgium
City	Bruges
Period	8/5/13 → 8/8/13

All Science Journal Classification (ASJC) codes

Nuclear Energy and Engineering

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Yasuda, K., Yamamoto, T., Takaki, S., Matsumura, S., & Ishikawa, N. (2013). Atomic structure of ion tracks and microstructure evolution in oxides irradiated with swift heavy ions. In 11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013 (pp. 7-11). (11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013). Belgian Nuclear Research Center.

Atomic structure of ion tracks and microstructure evolution in oxides irradiated with swift heavy ions. / Yasuda, K.; Yamamoto, T.; Takaki, S.; Matsumura, S.; Ishikawa, N.

11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013. Belgian Nuclear Research Center, 2013. p. 7-11 (11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Yasuda, K , Yamamoto, T, Takaki, S, Matsumura, S & Ishikawa, N 2013, Atomic structure of ion tracks and microstructure evolution in oxides irradiated with swift heavy ions. in 11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013. 11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013, Belgian Nuclear Research Center, pp. 7-11, 11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013, Bruges, Belgium, 8/5/13.

Yasuda K , Yamamoto T, Takaki S, Matsumura S, Ishikawa N. Atomic structure of ion tracks and microstructure evolution in oxides irradiated with swift heavy ions. In 11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013. Belgian Nuclear Research Center. 2013. p. 7-11. (11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013).

Yasuda, K. ; Yamamoto, T. ; Takaki, S. ; Matsumura, S. ; Ishikawa, N. / Atomic structure of ion tracks and microstructure evolution in oxides irradiated with swift heavy ions. 11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013. Belgian Nuclear Research Center, 2013. pp. 7-11 (11th International Topical Meeting on Nuclear Applications of Accelerators, AccApp 2013).

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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.",

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N2 - 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.

AB - 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.

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