Show simple item record

dc.creatorFreel, Keithen_US
dc.creatorPark, J.en_US
dc.creatorLin, M. C.en_US
dc.creatorHeaven, Michael C.en_US
dc.date.accessioned2011-07-12T17:38:37Z
dc.date.available2011-07-12T17:38:37Z
dc.date.issued2011en_US
dc.identifier2011-WJ-13en_US
dc.identifier.urihttp://hdl.handle.net/1811/49630
dc.descriptionAuthor Institution: Department of Chemistry, Emory University, Atlanta, GA 30322en_US
dc.description.abstractIn hydrocarbon combustion chemistry, the phenyl radical is believed to be a key intermediate in processes that lead to the formation of polycyclic aromatic hydrocarbons (PAH's) and soot. The radical is also of significance in atmospheric chemistry, interstellar chemistry, and environmental health. The detection and characterization of this highly reactive intermediate species in PAH formation reactions can help with the elucidation of mechanisms. However, the low concentrations associated with these radicals require special techniques to study them. This study combines an electrical discharge to produce radicals, a jet expansion to cool them immediately after production, and cavity ring-down spectroscopy (CRDS) for detection. We report absorption spectra for the $1^{2}B_{1} - \tilde{X}^{2}A_{1}$ transition of the phenyl radical at a rotational temperature near 15 K. Rotational constants and vibrational frequencies for the $0^{0}_{0},9^{1}_{0}$, and $10^{1}_{0}$ bands are reported. Homogeneous line broadening was evident with a width indicative of an excited state lifetime of 80 ps. These results show the effectiveness of our system for studying relatively large reactive intermediates.en_US
dc.language.isoenen_US
dc.publisherOhio State Universityen_US
dc.titleCAVITY RING-DOWN SPECTROSCOPY OF THE $1^{2}B_{1} - \tilde{X}^{2}A_{1}$ TRANSITION OF THE PHENYL RADICALen_US
dc.typeArticleen_US
dc.typeImageen_US
dc.typePresentationen_US


Files in this item

Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail

Items in Knowledge Bank are protected by copyright, with all rights reserved, unless otherwise indicated.

This item appears in the following Collection(s)

Show simple item record