THE SUPERPOSITION OF RAYLEIGH AND BRILLOUIN RADIATION IN PHOTON-CORRELATION SPECTROSCOPY OF LIQUIDS

被引：20

作者：

HINZ, B ^{[1
]}

SIMONSOHN, G ^{[1
]}

HENDRIX, M ^{[1
]}

WU, G ^{[1
]}

LEIPERTZ, A ^{[1
]}

机构：

[1] RUHR UNIV BOCHUM,INST THERMO & FLUIDDYNAM,D-4630 BOCHUM 1,FED REP GER

来源：

JOURNAL OF MODERN OPTICS | 1987年 / 34卷 / 08期

关键词：

LIQUIDS - Spectroscopic Analysis;

D O I：

10.1080/09500348714550991

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The radiation scattered in a liquid at small angles may be analysed by photon-correlation spectroscopy. The hydrodynamic Rayleigh signal is then the dominating contribution from which the thermal diffusivity D//T may be taken. It is necessarily mixed with the Brillouin signal and contributions from molecular scattering. This must be kept in mind even if nothing but a critical D//T measurement is intended. However, under favourable conditions, the whole 'Rayleigh-Brillouin triplet' including the Landau-Placzek ratio may be determined. An experimental procedure based on some simple relations is presented. A measurement on n-pentane at 143 degree C is given as an example.

引用

页码：1093 / 1106

页数：14

共 14 条

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