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ID 26514
本文ファイル
著者
Oh'ishi, Yasufumi
Nakaso, Ichiro
Kazi, Moynul Huq
Tamura, Kozaburo
NDC
物理学
抄録(英)
Small angle X-ray scattering (SAXS) measurements have been carried out to investigate density fluctuations near the critical point of expanded fluid Se. The experiments were performed using a polycrystalline sapphire cell of our design and a high pressure vessel. The vessel has a diamond window for an incident X-ray beam and a Be window for the scattered beams. The absolute scattering intensity was deduced from the measurements on the He gas used as the pressure transmitting medium. The pressure variation of the SAXS intensity for fluid Se at 1630°C shows a maximum intensity at 401 bar just below the isochor of the critical density. This is the first observation of critical scattering for fluid Se and a correlation length of 19 ± 3 Å was obtained from an Ornstein–Zernike plot.
掲載誌名
Journal of Non-Crystalline Solids
250-252巻
2号
開始ページ
531
終了ページ
536
出版年月日
1999-08-01
出版者
Elsevier Science B.V.
ISSN
0022-3093
NCID
出版者DOI
言語
英語
NII資源タイプ
学術雑誌論文
広大資料タイプ
学術雑誌論文
DCMIタイプ
text
フォーマット
application/pdf
著者版フラグ
author
権利情報
Copyright (c) 1999 Elsevier Science B.V. All rights reserved.
関連情報URL
部局名
総合科学研究科