Brillouin Scattering Study on Dynamic Properties of a Viscoelastic Liquid Propylene Glycol Using a Tandem Fabry-Perot Interferometer
Brillouin Scattering Study on Dynamic Properties of a Viscoelastic Liquid Propylene Glycol Using a Tandem Fabry-Perot Interferometer
复制标题
使用串联法布里-珀罗干涉仪研究粘弹性液体丙二醇动态特性的布里渊散射
DOI：
10.1143/jjap.33.2867
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发表时间：
1994
影响因子：
1.5
通讯作者：
Akira Kojima
中科院分区：
文献类型：
--
作者：
K. Takanashi;Akira Kojima
利用（3+3）程游标串联布里渊光谱仪在291 ~ 372 K温度范围和2 ~ 480 GHz频率范围内研究了丙二醇的动态特性。在这份报告中，我们讨论了声速色散观察到低于20 GHz，结构弛豫模式观察到的中频范围内的20 GHz和200 GHz之间，和快速弛豫模式观察到200 GHz以上。从这些测量，覆盖了很宽的频率范围内，光散射的动态磁化率已成功地确定在几个温度下，并与从拉曼散射获得的一个比较。
Dynamic properties of propylene glycol have been investigated using a (3+3) pass vernier tandem Brillouin spectrometer in a temperature range between 291 K and 372 K and a frequency range between 2 GHz and 480 GHz. In this report, we discuss the sound velocity dispersion observed below 20 GHz, the structural relaxation mode observed in a middle frequency range between 20 GHz and 200 GHz, and a fast relaxation mode observed above 200 GHz. From these measurements, covering a very wide frequency range, the dynamic susceptibility for light scattering has been successfully determined at several temperatures and compared with the one obtained from Raman scattering.