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The study of the Raman spectra of SiC layers in TRISO particles

Fang Chao Liu Ma-Lin

The study of the Raman spectra of SiC layers in TRISO particles

Fang Chao, Liu Ma-Lin
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  • Received Date:  14 August 2011
  • Accepted Date:  10 May 2012
  • Published Online:  05 May 2012

The study of the Raman spectra of SiC layers in TRISO particles

  • 1. Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
Fund Project:  Project supported by the National ST Major Project (Grant No. ZX06901), and the National Natural Science Foundation of China (Grant No. 11104156).

Abstract: The Raman spectra of the SiC layers in TRISO particles of fuel elements of HTGRs are studied. Through the analysis of the Raman shifts, the FWHM and intensities, the crystal phases, the residual stress and densities of SiC layers and corresponding spectroscopic features are clarified. The study of the 2D correlation spectrum of first order Raman scattering of SiC layer shows that the LO mode is much more sensitive than the TO mode to the change of density of SiC layer. All these conclusions are significant for synthesising TRISO particles and fuel elements of HTGRs and estimating their qualities.

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