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Dynamical simulations of displacement cascades near symmetrical tilt grain boundaries in UO2

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Abstract

Collision cascades near symmetrical tilt grain boundaries in UO2 have been investigated at energy of 5 keV. Primary knock-on atom with a distance of 3.5 nm from grain boundaries has been accelerated towards and perpendicular to the interface. Evolvement of the cascade is tracked employing classical molecular dynamics. Time evolution of the number of displaced atoms, Frenkel pairs and replacement atoms created by cascade is given. Simulations suggest that misorientation angle of the grain boundary has no effect on the final number of displaced atoms and replacement atoms. Additionally, final spatial distribution of displaced atoms at the end of the simulations has been investigated.

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Acknowledgments

This work bas been supported by the National Natural Science Foundation of China (Grant No. 11205146).

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Authors and Affiliations

  1. The College of Nuclear Technology and Automation Engineering, Chengdu University of Technology, Chengdu, China

    X. F. Tian & C. H. Lu

  2. Institute of Atomic and Molecular Physics, Sichuan University, Chengdu, China

    T. Gao

  3. The National Key Laboratory of Nuclear Fuel and Materials, Nuclear Power Institute of China, Chengdu, China

    H. X. Xiao

Authors
  1. X. F. Tian
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  2. T. Gao
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  3. H. X. Xiao
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  4. C. H. Lu
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Correspondence to X. F. Tian.

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Tian, X.F., Gao, T., Xiao, H.X. et al. Dynamical simulations of displacement cascades near symmetrical tilt grain boundaries in UO2 . Indian J Phys 88, 137–143 (2014). https://doi.org/10.1007/s12648-013-0400-7

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  • DOI: https://doi.org/10.1007/s12648-013-0400-7

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