Absorption spectrum and solar photodissociation of gaseous nitrous acid in the actinic wavelength region
Journal Article
·
· Geophysical Research Letters (American Geophysical Union); (USA)
- Rutgers, The State Univ. of New Jersey, New Brunswick (USA)
The absorption cross section of gaseous nitrous acid (HONO) in the actinic wavelength region ({lambda} {ge} 290 nm) of the solar radiation is mapped through laser photodissociation experiments, HONO is photodissociated by a tunable ultraviolet beam, and the OH product is monitored through fluorescence induced by a frequency-double dye laser. The absorption of HONO is mapped by scanning the photolysis wavelength. Since this technique yields relative cross-sections, the authors calibrate the measurements with previous measurements of absolute cross-section at 354 nm (because there is reasonable agreement among previous measurements at this wavelength). The present experimental approach is insensitive to the presence of NO{sub 2}, which apparently contributed to inaccuracies in some of the previous conventional measurements on HONO absorption.
- OSTI ID:
- 5480194
- Journal Information:
- Geophysical Research Letters (American Geophysical Union); (USA), Journal Name: Geophysical Research Letters (American Geophysical Union); (USA) Vol. 17:12; ISSN 0094-8276; ISSN GPRLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ABSORPTION SPECTROSCOPY
ATMOSPHERIC CHEMISTRY
CALIBRATION
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
DECOMPOSITION
DISSOCIATION
EARTH ATMOSPHERE
HYDROGEN COMPOUNDS
HYDROXYL RADICALS
INORGANIC ACIDS
MONITORING
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
NITROUS ACID
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
RADIATIONS
RADICALS
SOLAR RADIATION
SPECTROSCOPY
STELLAR RADIATION
SYNTHESIS
TROPOSPHERE
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
ABSORPTION SPECTROSCOPY
ATMOSPHERIC CHEMISTRY
CALIBRATION
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
DECOMPOSITION
DISSOCIATION
EARTH ATMOSPHERE
HYDROGEN COMPOUNDS
HYDROXYL RADICALS
INORGANIC ACIDS
MONITORING
NITRIC OXIDE
NITROGEN COMPOUNDS
NITROGEN DIOXIDE
NITROGEN OXIDES
NITROUS ACID
OXIDES
OXYGEN COMPOUNDS
PHOTOCHEMICAL REACTIONS
PHOTOLYSIS
RADIATIONS
RADICALS
SOLAR RADIATION
SPECTROSCOPY
STELLAR RADIATION
SYNTHESIS
TROPOSPHERE