Small angle X-ray scattering measurements for expanded fluid Se near the critical point
Journal of Non-Crystalline Solids 250-252 巻 2 号
531-536 頁
1999-08-01 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Small angle X-ray scattering measurements for expanded fluid Se near the critical point
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| 作成者 |
Oh'ishi Yasufumi
Nakaso Ichiro
Kazi Moynul Huq
Tamura Kozaburo
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| 収録物名 |
Journal of Non-Crystalline Solids
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| 巻 | 250-252 |
| 号 | 2 |
| 開始ページ | 531 |
| 終了ページ | 536 |
| 抄録 |
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.
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| NDC分類 |
物理学 [ 420 ]
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
Elsevier Science B.V.
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| 発行日 | 1999-08-01 |
| 権利情報 |
Copyright (c) 1999 Elsevier Science B.V. All rights reserved.
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| 出版タイプ | Author’s Original（十分な品質であるとして、著者から正式な査読に提出される版） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[ISSN] 0022-3093
[DOI] 10.1016/S0022-3093(99)00286-0
[NCID] AA00703560
[DOI] http://dx.doi.org/10.1016/S0022-3093(99)00286-0
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