Viscoelastic narrowing of a collective mode in molten CsCl observed by inelastic x-ray scattering
Journal of Physics-Condensed Matter 19 巻 46 号
466110- 頁
2007-11 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Viscoelastic narrowing of a collective mode in molten CsCl observed by inelastic x-ray scattering
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| 作成者 |
Hosokawa S.
Kajihara Y.
Matsuda K.
Tsutsui S.
Baron A. Q. R.
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| 収録物名 |
Journal of Physics-Condensed Matter
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| 巻 | 19 |
| 号 | 46 |
| 開始ページ | 466110 |
| 抄録 |
The dynamic structure factor of molten CsCl has been measured at low momentum transfer, 1.4 nm(-1) <= Q < 33 nm(-1), using high-resolution inelastic x-ray scattering. The longitudinal acoustic mode disperses 1.7 times faster than the adiabatic sound velocity and its linewidth increases following the Q(2) law as predicted by the hydrodynamics. However, the linewidth is a factor of seven smaller than the estimation using the linewidths obtained from Brillouin light scattering. The large speed-up and the significant narrowing of the collective mode, which can be related to each other by a recently presented viscoelastic theory, must arise from the intrinsic nature of molten alkali chlorides. Furthermore in comparison with the previous results for molten NaCl and KCl, the apparent sound velocity is found to be approximately scaled by the inverse of the square-root of the effective mass among these molten salts.
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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 |
IOP Publishing Ltd
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| 発行日 | 2007-11 |
| 権利情報 |
Copyright(c) 2007 IOP Publishing Ltd
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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] 0953-8984
[DOI] 10.1088/0953-8984/19/46/466110
[NCID] AA10672168
[DOI] http://dx.doi.org/10.1088/0953-8984/19/46/466110
～の異版である
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