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Kinetic study of electronically excited oxygen atoms, O(21D2), by time-resolved atomic absorption spectroscopy in the vacuum ultra-violet (λ=115.2 nm, O(31D02←21D2))

✍ Scribed by R.F. Heidner III; D. Husain; J.R. Wiesenfeld

Publisher
Elsevier Science
Year
1972
Tongue
English
Weight
352 KB
Volume
16
Category
Article
ISSN
0009-2614

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✦ Synopsis

EIectronicalJy excited oxygen atoms, O(2lD23, generated by the pulsed irradiatkn of ozone in the Hartley continuum, have been observed by bsorption spectroscopy using time-resolved attenuation of resonance radiation in the vacuum ultra-violet (O(31D2$41(21D ) 2 , h 115.2 nm). The concentration profile of O(2lDq) has been moni-= tored photceiectricaily following repetitive pulsed photolysis and the kinetic decay character&i& of the excited atom determined using signal avenging techniques. 'Ike rate constants for the col.lisionaI removal of O(21D2) were found to be as follows (300OK): kOs =(3.5+0.3)x 10-10 cm3 molecule-l set-1, key = c 1.5~ 10-15 cm3 mole-

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