Recovery and restructuring induced by fission energy ions in high burnup nuclear fuel

M. Kinoshita; K. Yasunaga; T. Sonoda; A. Iwase; N. Ishikawa; M. Sataka; K. Yasuda; S. Matsumura; H. Y. Geng; T. Ichinomiya; Y. Chen; Y. Kaneta; M. Iwasawa; T. Ohnuma; Y. Nishiura; J. Nakamura; Hj Matzke

doi:10.1016/j.nimb.2009.02.022

Recovery and restructuring induced by fission energy ions in high burnup nuclear fuel

M. Kinoshita, K. Yasunaga, T. Sonoda, A. Iwase, N. Ishikawa, M. Sataka, K. Yasuda, S. Matsumura, H. Y. Geng, T. Ichinomiya, Y. Chen, Y. Kaneta, M. Iwasawa, T. Ohnuma, Y. Nishiura, J. Nakamura, Hj Matzke

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

In light water commercial reactors, extensive change of grain structure was found at high burnup ceramic fuels. The mechanism is driven by bombardment of fission energy fragments and studies were conducted by combining accelerator based experiments and computer-science. Specimen of CeO₂ was used as simulation material of fuel ceramics. With swift heavy ion (Xe) irradiation on CeO₂, with 210 MeV, change of valence charge and lattice deviation of cations were observed by XPS and XRD. Combined irradiations of Xe implantation and swift heavy ion irradiation successfully produced sub-micrometer sized sub-grains, similar as that observed in commercial fuels. Studying components of mechanism scenarios, with first principle calculations using the VASP code, we found stable hyper-stoichiometric defect structures of UO_2+x. Molecular dynamics studies revealed stability of Xe planar defects and also found rapid transport mode of oxygen-vacancy clusters.

Original language	English
Pages (from-to)	960-963
Number of pages	4
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	267
Issue number	6
DOIs	https://doi.org/10.1016/j.nimb.2009.02.022
Publication status	Published - 2009 Mar

Keywords

High burnup
Light water reactor
Nuclear fuel
Recovery
Rim structure

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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Kinoshita, M., Yasunaga, K., Sonoda, T., Iwase, A., Ishikawa, N., Sataka, M., Yasuda, K., Matsumura, S., Geng, H. Y., Ichinomiya, T., Chen, Y., Kaneta, Y., Iwasawa, M., Ohnuma, T., Nishiura, Y., Nakamura, J., & Matzke, H. (2009). Recovery and restructuring induced by fission energy ions in high burnup nuclear fuel. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 267(6), 960-963. https://doi.org/10.1016/j.nimb.2009.02.022

Recovery and restructuring induced by fission energy ions in high burnup nuclear fuel. / Kinoshita, M.; Yasunaga, K.; Sonoda, T.; Iwase, A.; Ishikawa, N.; Sataka, M.; Yasuda, K.; Matsumura, S.; Geng, H. Y.; Ichinomiya, T.; Chen, Y.; Kaneta, Y.; Iwasawa, M.; Ohnuma, T.; Nishiura, Y.; Nakamura, J.; Matzke, Hj.

In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 267, No. 6, 03.2009, p. 960-963.

Research output: Contribution to journal › Article › peer-review

Kinoshita, M, Yasunaga, K, Sonoda, T, Iwase, A, Ishikawa, N, Sataka, M, Yasuda, K, Matsumura, S, Geng, HY, Ichinomiya, T, Chen, Y, Kaneta, Y, Iwasawa, M, Ohnuma, T, Nishiura, Y, Nakamura, J & Matzke, H 2009, 'Recovery and restructuring induced by fission energy ions in high burnup nuclear fuel', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 267, no. 6, pp. 960-963. https://doi.org/10.1016/j.nimb.2009.02.022

Kinoshita, M. ; Yasunaga, K. ; Sonoda, T. ; Iwase, A. ; Ishikawa, N. ; Sataka, M. ; Yasuda, K. ; Matsumura, S. ; Geng, H. Y. ; Ichinomiya, T. ; Chen, Y. ; Kaneta, Y. ; Iwasawa, M. ; Ohnuma, T. ; Nishiura, Y. ; Nakamura, J. ; Matzke, Hj. / Recovery and restructuring induced by fission energy ions in high burnup nuclear fuel. In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 2009 ; Vol. 267, No. 6. pp. 960-963.

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abstract = "In light water commercial reactors, extensive change of grain structure was found at high burnup ceramic fuels. The mechanism is driven by bombardment of fission energy fragments and studies were conducted by combining accelerator based experiments and computer-science. Specimen of CeO2 was used as simulation material of fuel ceramics. With swift heavy ion (Xe) irradiation on CeO2, with 210 MeV, change of valence charge and lattice deviation of cations were observed by XPS and XRD. Combined irradiations of Xe implantation and swift heavy ion irradiation successfully produced sub-micrometer sized sub-grains, similar as that observed in commercial fuels. Studying components of mechanism scenarios, with first principle calculations using the VASP code, we found stable hyper-stoichiometric defect structures of UO2+x. Molecular dynamics studies revealed stability of Xe planar defects and also found rapid transport mode of oxygen-vacancy clusters.",

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AU - Ishikawa, N.

AU - Sataka, M.

AU - Yasuda, K.

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AU - Geng, H. Y.

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AU - Chen, Y.

AU - Kaneta, Y.

AU - Iwasawa, M.

AU - Ohnuma, T.

AU - Nishiura, Y.

AU - Nakamura, J.

AU - Matzke, Hj

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