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 Title: RE-EVALUATION OF HO3 STRUCTURE USING MILLIMETER-SUBMILLIMETER SPECTROSCOPY Author(s): Zou, Luyao Contributor(s): Widicus Weaver, Susanna L.; Hays, Brian Subject(s): Radicals Abstract: The HO$_3$ radical is of great interest in both atmospheric and astrophysical chemistry. However, its molecular structure has not been fully characterized by previous spectral studies. Microwave spectral studies on the textit{trans}-HO$_3$ conformer did not access higher $K_a$ levels due to their limited frequency range. As a result, several centrifugal distortion constants could not be determined. We have therefore conducted spectroscopy of HO$_3$ in the millimeter and submillimeter ranges, from 70 to 450 GHz, under the guidance of a new fast sweep technique we developed for line searching. Large frequency shifts, primarily due to a large $Delta_{K}$ centrifugal distortion constant, are observed compared to the spectral extrapolation from previous microwave studies. In addition, new spectral branches have been detected. The measured lines and preliminary spectral analysis will be presented, and the implications of these results will be discussed. Issue Date: 23-Jun-15 Publisher: International Symposium on Molecular Spectroscopy Citation Info: ACS Genre: CONFERENCE PAPER/PRESENTATION Type: Text Language: English URI: http://hdl.handle.net/2142/79086 Date Available in IDEALS: 2016-01-05
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