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Ultraviolet absorption spectrum of HOClThe room temperature UV absorption spectrum of HOCl was measured over the wavelength range 200 to 380 nm with a diode array spectrometer. The absorption spectrum was identified from UV absorption spectra recorded following UV photolysis of equilibrium mixtures of Cl2O/H2O/HOCl. The HOCl spectrum is continuous with a maximum at 242 nm and a secondary peak at 304 nm. The measured absorption cross section at 242 nm was (2.1 +/- 0.3) x 10 exp -19/sq cm (2 sigma error limits). These results are in excellent agreement with the work of Knauth et al. (1979) but in poor agreement with the more recent measurements of Mishalanie et al. (1986) and Permien et al. (1988). An HOCl nu2 infrared band intensity of 230 +/- 35/sq cm atm was determined based on this UV absorption cross section. The present results are compared with these previous measurements and the discrepancies are discussed.
Document ID
19930044363
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Burkholder, James B.
(NOAA, Aeronomy Lab.; Cooperative Inst. for Research in Environmental Sciences, Boulder CO, United States)
Date Acquired
August 16, 2013
Publication Date
February 20, 1993
Publication Information
Publication: Journal of Geophysical Research
Volume: 98
Issue: D2
ISSN: 0148-0227
Subject Category
Geophysics
Accession Number
93A28360
Distribution Limits
Public
Copyright
Other

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