Absolute measurement of gas concentrations and saturation behavior in pulsed photoacoustics

被引：15

作者：

Schafer, S ^{[1
]}

Miklos, A ^{[1
]}

Pusel, A ^{[1
]}

Hess, P ^{[1
]}

机构：

[1] Univ Heidelberg, Inst Phys Chem, D-69120 Heidelberg, Germany

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 285卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(98)00032-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Absolute photoacoustic measurements of the signal strength yielding the concentration and absorption coefficient of ethylene were performed in the IR on the weakly and strongly absorbed 10P(10) and 10P(14) lines of a pulsed CO2 laser, respectively, using an optimized cylindrical acoustic resonator with Q similar to 1000. The calculated photoacoustic signal strength agreed with the measured signal within an experimental error of 10%. With the 157 nm radiation of an F-2 laser pulsed photoacoustics was extended into the VUV region where photodissociation of C2H4 occurs. Optical saturation phenomena were observed for pulsed CO2 laser and F-2 laser excitation below 3 mJ pulse energy. (C) 1998 Elsevier Science B.V.

引用

页码：235 / 239

页数：5

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