TRACE DETECTION OF NO2 BY FREQUENCY-MODULATION-ENHANCED MAGNETIC ROTATION SPECTROSCOPY

Authors
SMITH JM BLOCH JC FIELD RW STEINFELD JL
Citation
Jm. Smith et al., TRACE DETECTION OF NO2 BY FREQUENCY-MODULATION-ENHANCED MAGNETIC ROTATION SPECTROSCOPY, Journal of the Optical Society of America. B, Optical physics, 12(6), 1995, pp. 964-969
Citations number
27
Categorie Soggetti
Optics
Journal title
Journal of the Optical Society of America. B, Optical physics → ACNP
ISSN journal
07403224
Volume
12
Issue
6
Year of publication
1995
Pages
964 - 969
Database
ISI
SICI code
0740-3224(1995)12:6<964:TDONBF>2.0.ZU;2-4
Abstract
Frequency-modulation-enhanced magnetic rotation spectroscopy has been shown to be a sensitive and selective technique for detecting local co ncentrations of gaseous NO2. Detection levels of 20 parts in 10(9) hav e been achieved in the laboratory (in the presence of larger ambient a tmospheric levels). Simple signal-processing algorithms, demonstrated here, promise detection levels at the parts-in-10(12) level. Improveme nts are suggested for further optimization of the technique, and the e ffects of background atmospheric NO2 levels are discussed.