VARIABLE GAP CAPACITIVE DETECTOR FOR MEASUREMENT OF ULTRASONIC DISPLACEMENT AMPLITUDES IN SOLIDS

被引：16

作者：

PETERS, RD

BREAZEALE, MA

PARE, VK

机构：

[1] Solid State Division, Oak Ridge National Laboratory, Oak Ridge

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1968年 / 39卷 / 10期

关键词：

D O I：

10.1063/1.1683147

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A variable gap capacitive detector has been developed for displacement amplitude measurements of longitudinal ultrasonic waves in the frequency range 5 to 100 MHz. The gap spacing is controlled by differential gas pressure. With this device it is possible to maintain a constant detector capacitance for measurements of the temperature dependence of the third order elastic constants. This improves the precision of the measurements considerably. © 1968 The American Institute of Physics.

引用

页码：1505 / +

页数：1