Yield determination of OH(v=0,1) radicals produced by the electron-ion recombination of H3O+ ions

Autor:	Michael F. Golde, Rainer Johnsen, Theodosia Gougousi
Rok vydání:	1997
Předmět:	Chemistry Excited state Metastability Yield (chemistry) Radical Analytical chemistry General Physics and Astronomy Physical and Theoretical Chemistry Laser-induced fluorescence Spectral line Dissociative recombination Ion
Zdroj:	The Journal of Chemical Physics. 107:2430-2439
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.474586
Popis:	A flowing afterglow apparatus in conjunction with laser induced fluorescence (LIF) diagnostics has been used to determine the yield of OH(v=0,1) produced by the dissociative recombination (DR) of H3O+ ions with electrons at 300 K. The yield for v=0 radicals (0.48 ± 0.07) was determined by two different methods: (1) by comparing it to the known OH yield of the ion-molecule reaction Ar++H2O and (2) by comparing it to that of the reaction of metastable Ar atoms (Ar*) with H2O. The yield of vibrationally excited OH(v=1) (0.12± 0.02) was obtained relative to that in v=0 by comparing LIF spectra. The results corroborate earlier experimental work which determined the yields of OH in v=0 and in unspecified vibrationally excited states v>0.
Databáze:	OpenAIRE
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