Third‐generation FAGE instrument for tropospheric hydroxyl radical measurement
Authors:
- C. Y. ChanCCC. Y. Chan
- T. M. HardTHT. M. Hard
- A. A. MehrabzadehAMA. A. Mehrabzadeh
- L. A. GeorgeLGL. A. George
- R. J. O'BRienROR. J. O'BRien
- 20 October 1990
- journal article
- Published by American Geophysical Union (AGU) in Journal of Geophysical Research: Atmospheres
- Vol. 95 (D11) , 18569-18576
Abstract
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 2Σ←2Π. 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.Keywords
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