q divergence of nonequilibrium fluctuations and its gravity-induced frustration in a temperature stressed liquid mixture

被引：80

作者：

Vailati, A ^{[1
]}

Giglio, M ^{[1
]}

机构：

[1] UNIV MILAN,IST NAZL FIS MAT,I-20133 MILAN,ITALY

来源：

PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.77.1484

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We present the first direct measurements of the scattered intensity from a nonequilibrium, temperature stressed liquid mixture (heating from above). The data have been obtained with an unconventional very low angle light scattering instrument. While at larger q the intensity diverges with a q(-4) power law, we show for the first time that at smaller q the divergence is frustrated by gravity-induced effects. In spite of this, a staggering increase of more than 5 orders of magnitude above equilibrium scattering is reported.

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页码：1484 / 1487

页数：4

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