Positronium in silica-based glasses

Y. Sasaki, Y. Nagai, H. Ohkubo, K. Inoue, Z. Tang, M. Hasegawa

研究成果: Article査読

24 被引用数 (Scopus)

抄録

Structural subnanovoids in silica-based glasses (synthetic silica, borosilicate glass, lead glass, alkali barium glass, soda-lime glass and model glass of radioactive waste glass) with several SiO2 concentrations are studied by positron lifetime and one-dimensional angular correlation of annihilation radiation spectroscopy. The average sizes of the structural subnanovoids are estimated from the pick-off annihilation rates of the ortho-positronium and from the momentum distribution of the para-positronium. It is observed that the sizes of the subnanovoids and the positronium intensities decrease with decreasing SiO2 concentrations in the glasses, which suggests that the positronium is a unique and useful tool for subnanovoids in glass materials.

本文言語English
ページ(範囲)569-572
ページ数4
ジャーナルRadiation Physics and Chemistry
68
3-4
DOI
出版ステータスPublished - 2003

ASJC Scopus subject areas

  • Radiation

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