Temperature-dependent bulk viscosity of nitrogen gas determined from spontaneous Rayleigh-Brillouin scattering

被引：56

作者：

Gu, Ziyu ^{[1
]}

Ubachs, Wim ^{[1
]}

机构：

[1] Vrije Univ Amsterdam, LaserLaB, Dept Phys & Astron, NL-1081 HV Amsterdam, Netherlands

来源：

OPTICS LETTERS | 2013年 / 38卷 / 07期

关键词：

18;

D O I：

10.1364/OL.38.001110

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Values for the bulk viscosity eta(b) of molecular nitrogen gas (N-2) were derived from spontaneous Rayleigh-Brillouin scattering at ultraviolet wavelengths (lambda = 366.8 nm) and at a 90 degrees scattering angle. Analysis of the scattering profiles yields values showing a linear increasing trend, ranging from eta(b) = 0.7 x 10(-5) to 2.0 x 10(-5) kg . m(-1) . s(-1) in the temperature interval from 255 to 340 K. The present values, pertaining to hypersound acoustics at frequencies in the gigahertz domain, are found to be in agreement with results from acoustic attenuation experiments in N-2 performed at megahertz frequencies. (C) 2013 Optical Society of America

引用

页码：1110 / 1112

页数：3

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