Structural subnanovoids in silica-based glasses probed by positronium

Koji Inoue, Yasuyoshi Nagai, Yuzuru Sasaki, Zheng Tang, Hideaki Ohkubo, Masuyuki Hasegawa

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

Structural subnanovoids in silica-based glasses with various glass former contents are systematically studied using positronium (Ps) as a probe. The average sizes of the structural subnanovoids are estimated from the 2D-ACAR (two-dimensional angular correlation of positron annihilation radiation) momentum distribution of para-positronium (p-Ps) and from the pick-off annihilation rates of ortho-positronium (o-Ps) in the subnanovoids. The sizes of the subnanovoids decrease almost linearly with the glass former molar content. This finding gives us useful and unique information about the structural subnanovoids and suggests the possible tool for the study of the stability of nuclear radioactive waste glass during long-term storage.

本文言語English
ホスト出版物のタイトルPositron Annihilation
ホスト出版物のサブタイトルProceedings of the 13th International Conference on Positron Annihilation, ICPA-13
編集者Toshio Hyodo, Haruo Saito, Yoshinori Kobayashi, Yasuyuki Nagashima
出版社Trans Tech Publications Ltd
ページ304-306
ページ数3
ISBN(印刷版)9780878499366
DOI
出版ステータスPublished - 2004
イベントPositron Annihilation: Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13 - Kyoto, Japan
継続期間: 2003 9 72003 9 12

出版物シリーズ

名前Materials Science Forum
445-446
ISSN(印刷版)0255-5476
ISSN(電子版)1662-9752

Other

OtherPositron Annihilation: Proceedings of the 13th International Conference on Positron Annihilation, ICPA-13
国/地域Japan
CityKyoto
Period03/9/703/9/12

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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