Variable pathlength cells for precise hypersonic spectrometry of liquids up to 5 GHz

被引：36

作者：

Kaatze, U ^{[1
]}

Kuhnel, V ^{[1
]}

Weiss, G ^{[1
]}

机构：

[1] UNIV HEIDELBERG,INST ANGEW PHYS,D-69120 HEIDELBERG,GERMANY

来源：

ULTRASONICS | 1996年 / 34卷 / 01期

关键词：

hypersonic spectrometry; liquids; absorption; specimen cells;

D O I：

10.1016/0041-624X(95)00130-U

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

A method is described to measure precisely the ultrasonic absorption coefficient alpha and sound velocity upsilon(s) of liquids between about 300 MHz and 5 GHz An easy-to-handle automatic measuring procedure enables relatively fast acquisition of data. The construction of two different specimen cells is described. One cell, using surface excitation of small rod-shaped piezoelectric lithium niobate crystals allows for broadband measurements up to about 3 GHz. The other cell utilizes thickness vibrations of thin ZnO films. It is appropriate for measurements above 2 GHz.

引用

页码：51 / 58

页数：8

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