PRODUCTION OF $O(^{1}D)$ IN THE RYDBERG STATES OF $O_{2}$ BY PHOTODISSOCIATION IN THE WAVELENGTH REGION 105-130 NM
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Date
1999
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Ohio State University
Abstract
The metastable $O(^{1}D)$ produced in the photodissociation of $O_{2}$ in the Rydberg states lying in the wavelength region 105-130 nm were investigated. The detection of $O(^{1}D)$ was made by measuring the infrared emission at 762 nm from the transition $O_{2}(b^{1}\Sigma^{+}_{g}- X {^{3}}\Sigma^{-}_{g})$ produced by $O({^{1}}D) + O_{2}$. The excited states of $O_{2}$ can be classified as either the ${^{3}}\Sigma^{-}_{u}$ states, which are correlated with $O(^{1}D) + O(^{3}P)$, or the ${^{3}}\Pi_{u}$ states, which are correlated with $O(^{3}P) + O(^{3}P)$. Our studies resulted in the determination of the quantum yields for producing $O(^{1}D)$ for many bands of the $E {^{3}}\Sigma^{+}_{u}$ states. We assigned several series of Rydberg states, and found the mixing of the ${^{3}}\Sigma^{+}_{u}$ and ${^{3}}\Pi_{u}$ at some wavelengths. Furthermore, a band at 116.3 nm was observed to emit weakly in the visible region.
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Author Institution: Department of Physics and Chemistry, National Central Univ.