RDF Structure Investigation of Densified Silica Glasses

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  • 動径分布関数による高密度シリカガラスの構造研究
  • ドウケイ ブンプ カンスウ ニ ヨル コウ ミツド シリカ ガラス ノ コウゾ

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A large magnitude of pressure was hydrostatically applied on silica glass. After removing the compression pressure, the silica glass shows an increase in refractive index and also in density, which is corresponding to the pressure. X-ray photographs of the densified specimens indicate that the profile of scattering intensities of haloes are different from those of the normal silica glass. The position of the strongest intensity shifts toward the higher angle with increasing the compression pressure. The manner of the structure changes of silica glass with increasing the compression pressure is discussed based on the ring structure-model of the SiO4 tetrahedra and the radial distribution functions calculated from the profiles of the scattered intensities.

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