dc.creator Roudjane, Mourad en_US dc.creator Codd, Terrance J. en_US dc.creator Miller, Terry A. en_US dc.date.accessioned 2013-07-16T21:45:35Z dc.date.available 2013-07-16T21:45:35Z dc.date.issued 2013 en_US dc.identifier 2013-WJ-06 en_US dc.identifier.uri http://hdl.handle.net/1811/55539 dc.description Author Institution: Laser Spectroscopy Facility, The Ohio State University, Columbus, Ohio 43210 en_US dc.description.abstract The NO$_3$ radical is expected to exhibit a Jahn-Teller (JT) effect in its degenerate $\tilde{A}^2$E$^{\prime\prime}$ electronic state.{, nderline{\textbf{107}}, 2829, 1997.}} In the $\tilde{A}$ state there are two JT active modes, $\nu_3$ and $\nu_4$ (e$^\prime$ stretch and in-plane bend respectively). Theoretical work has predicted that the JT effect in the $\tilde{A}$ state should be quite strong and approach the static case where the molecule is permanently distorted to a lower symmetry geometry. A more comprehensive understanding of its structure can be achieved using high resolution rotationally resolved absorption spectroscopy of its different vibronic bands. The high resolution absorption spectra of 3$^{1}_{0}$ and 3$^{1}_{0}$ 4$^{1}_{0}$ vibronic bands of the $\tilde{A}$ $^2$E$^{\prime\prime}$ excited state of NO$_3$ have been successfully recorded for the first time using our jet cooled cavity ring down apparatus. These parallel bands are vibronically allowed transitions and shows the same contour. An oblate symmetric top model Hamiltonian including both centrifugal distortion and spin rotation terms is used to analyze the spectrum. The rotational analysis of this band, supported by combination differences, demonstrate the existence of doubled lines as were observed for 4$^{n}_{0}$ (n=1,3) bands.{}$OSU International Symposium on Molecular Spectroscopy, The Ohio State University, Columbus, Ohio, 2011, talk TI-03.}} en_US dc.language.iso en en_US dc.publisher Ohio State University en_US dc.title HIGH RESOLUTION CAVITY RING DOWN SPECTROSCOPY OF THE 3$^{1}_{0}$and 3$^{1}_{0}$4$^{1}_{0}$BANDS OF THE$\tilde{A}^2$E$^{\prime\prime}$STATE OF NO$_3\$ RADICAL en_US dc.type Article en_US dc.type Image en_US dc.type Presentation en_US
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