HIGH-SENSITIVITY OPTICAL MICROPHONE FOR PHOTOACOUSTICS

被引：8

作者：

DEPAULA, MH

VINHA, CA

BADINI, RG

机构：

[1] UNIV FED MATO GROSSO SUL,DEPT FIS,BR-79069 CAMPO GRANDE,BRAZIL

[2] UNIV FLORIDA,DEPT CHEM,GAINESVILLE,FL 32611

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1992年 / 63卷 / 06期

关键词：

D O I：

10.1063/1.1143753

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We show that with the optical microphone the sensitivity of the photoacoustic gas-phase microphone detection technique is improved by four orders of magnitude and that temperature variations of 10(-9)-degrees-C at the sample surface can be detected with a conventional lock-in detection scheme.

引用

页码：3487 / 3491

页数：5

共 10 条

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