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Quantum yields of O(¹D) in the photolysis of ozone between 289 and 329 nm as a function of temperature
Author(s) -
Talukdar Ranajit K.,
Longfellow Cheryl A.,
Gilles Mary K.,
Ravishankara A. R.
Publication year - 1998
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/97gl03354
Subject(s) - photodissociation , quantum yield , ozone , wavelength , excited state , solar zenith angle , yield (engineering) , zenith , quantum , materials science , physics , atomic physics , photochemistry , chemistry , atmospheric sciences , optics , meteorology , thermodynamics , quantum mechanics , fluorescence
The quantum yields for O(¹D) production in O 3 photolysis between 203 and 320 K, and 289 to 329 nm were measured. A portion of the observed O(¹D) quantum yields at wavelengths greater than 310 nm is attributed to a spin‐forbidden channel and the variation of quantum yield with temperature is ascribed to photodissociation of vibrationally (or rotationally) excited ozone. Our results yield atmospheric O(¹D) production rates larger than those obtained from current recommendations, especially at high solar zenith angles, low temperatures, and large overhead ozone columns.