THEORETICAL AND EXPERIMENTAL ADVANTAGES OF A COMPACT MIRAGE SPECTROSCOPY SETUP FOR TRACE GAS DETECTION

Thumbnail Image

Files

1996-TE-04.jpg (80.27 KB)

Date

1996

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Ohio State University

Research Projects

Organizational Units

Journal Issue

Abstract

We present the advantages of a compact setup for real time in situ trace gas detection based on photothermal deflection spectroscopy optimized for practical $applications^{a}$. The use of high quality Ge windows permits a true parallel geometry, resulting in a design resistant to ambient air motion while preserving the advantages the technique presents with respect to standard absorption spectroscopy, such as good sensitivity, local sample probing and open air measurement capability, We estimate the detection limit of $C_{2}H_{4}$ in an $N_{2}$ atmosphere to be 100 ppt, and have measured real time in situ emissions from a variety of solid and semisolid samples to evaluate environmental, industrial, and argicultural applications.

Description

$^{a}$B. Zimering, A. C. Boccara, Rev. Sci. Inst. (in press)
Author Institution: CNRS UPR A0005, Laboratorie d'Optique Physique

Keywords

Citation

URI

http://hdl.handle.net/1811/13656

Collections

Abstracts of OSU International Symposium on Molecular Spectroscopy 1990-1999