INFRARED SPECTROSCOPY OF THE INTERACTION OF O$_2$ WITH NO TRAPPED IN SOLID NEON
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Date
2008
Authors
Jacox, Marilyn E.
Thompson, Warren E.
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Journal ISSN
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Publisher
Ohio State University
Abstract
When O$_2$ trapped in solid neon at 4.3 K in sites adjacent to an NO molecule is excited by 240 to 420 nm radiation, NO$_3$ is stabilized. Photoexcitation of NO$_3$ to its 663-nm state, which has $^2$E$^{\prime }$ symmetry, leads to the re-formation of weakly interacting (O$_2$)(NO) pairs trapped in solid neon. In addition to infrared absorptions near the gas-phase band centers of NO and O$_2$, the weakly bound complex shows several absorptions at lower frequencies. Experiments in which either the O$_2$ or the NO moiety of the initial sample deposit is enriched in O-18 show O-isotopic randomization of the complex which results from photodestruction of the NO$_3$ product.
Description
Author Institution: Optical Technology Division, National Institute of Standards and Technology, Gaithersburg, MD 20899-8441