The development and deployment of a ground-based, laser-induced fluorescence instrument for the in situ detection of iodine monoxide radicals

M. E. Thurlow, Dick T Co, A. S. O'Brien, R. A. Hannun, L. B. Lapson, T. F. Hanisco, J. G. Anderson

Research output: Contribution to journalArticle

Abstract

High abundances of iodine monoxide (IO) are known to exist and to participate in local photochemistry of the marine boundary layer. Of particular interest are the roles IO plays in the formation of new particles in coastal marine environments and in depletion episodes of ozone and mercury in the Arctic polar spring. This paper describes a ground-based instrument that measures IO at mixing ratios less than one part in 10(12). The IO radical is measured by detecting laser-induced fluorescence at wavelengths longer that 500 nm. Tunable visible light is used to pump the A(2)Π3/2 (v(') = 2) ← X(2)Π3/2 (v(″) = 0) transition of IO near 445 nm. The laser light is produced by a solid-state, Nd:YAG-pumped Ti:Sapphire laser at 5 kHz repetition rate. The laser-induced fluorescence instrument performs reliably with very high signal-to-noise ratios (>10) achieved in short integration times (

Original languageEnglish
Pages (from-to)44101
Number of pages1
JournalReview of Scientific Instruments
Volume85
Issue number4
DOIs
Publication statusPublished - Apr 1 2014

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Iodine
laser induced fluorescence
iodine
Lasers
Fluorescence
marine environments
mixing ratios
photochemical reactions
yttrium-aluminum garnet
ozone
lasers
boundary layers
repetition
sapphire
depletion
signal to noise ratios
Ozone Depletion
pumps
solid state
Photochemistry

ASJC Scopus subject areas

  • Medicine(all)

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The development and deployment of a ground-based, laser-induced fluorescence instrument for the in situ detection of iodine monoxide radicals. / Thurlow, M. E.; Co, Dick T; O'Brien, A. S.; Hannun, R. A.; Lapson, L. B.; Hanisco, T. F.; Anderson, J. G.

In: Review of Scientific Instruments, Vol. 85, No. 4, 01.04.2014, p. 44101.

Research output: Contribution to journalArticle

Thurlow, M. E. ; Co, Dick T ; O'Brien, A. S. ; Hannun, R. A. ; Lapson, L. B. ; Hanisco, T. F. ; Anderson, J. G. / The development and deployment of a ground-based, laser-induced fluorescence instrument for the in situ detection of iodine monoxide radicals. In: Review of Scientific Instruments. 2014 ; Vol. 85, No. 4. pp. 44101.
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AU - Lapson, L. B.

AU - Hanisco, T. F.

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