Open AccessThird‐generation FAGE instrument for tropospheric hydroxyl radical measurement
Author(s) -
Chan C. Y.,
Hard T. M.,
Mehrabzadeh A. A.,
George L. A.,
O'Brien R. J.
Publication year - 1990
Publication title -
journal of geophysical research: atmospheres
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.67
H-Index - 298
eISSN - 2156-2202
pISSN - 0148-0227
DOI - 10.1029/jd095id11p18569
Subject(s) - laser , hydroxyl radical , laser induced fluorescence , troposphere , lidar , dye laser , analytical chemistry (journal) , fluorescence , materials science , radical , photon , optics , photochemistry , chemistry , meteorology , physics , environmental chemistry , organic chemistry
We have constructed a single‐stage, frequency‐doubled, copper vapor laser‐pumped dye laser to be used in the measurement of atmospheric hydroxyl radical concentrations. This laser can be tuned to either the 1←0 or 0←0 vibrational transition in the electronic transition 2 Σ← 2 Π. A new photon counting instrument is used for HO fluorescence detection. Theoretical and experimental studies of instrument performance show better sensitivities and reduced photolytic interferences than have been possible with previous systems based upon Nd:YAG pumping.
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