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Title:HIGH PRECISION INFRARED SPECTROSCOPY OF OH+
Author(s):Markus, Charles R.
Contributor(s):McCall, Benjamin J.; Jenkins II, Paul A.; Kocheril, G. Stephen; Hodges, James N.; Perry, Adam J.
Subject(s):Mini-symposium: High-Precision Spectroscopy
Abstract:The molecular ion OH$^{+}$ is of significant importance to interstellar chemistry. OH$^{+}$ is a key intermediate in the formation of water, and the ratios of OH$^{+}$ to H$_{2}$O$^{+}$ and H$_{3}$O$^{+}$ have been used to calculate the cosmic ray ionization rates in diffuse molecular clouds.footnote{F. Wyrowski textit{et al., Astron. Astrophys.}, (2010),textbf{26},5.}footnote{E. Gonzヌlez-Alfonso textit{et al., Astron. Astrophys.,} (2013), textbf{550}, A25.}footnote{N. Indriolo textit{et al., Astrophys. J.}, (2015), textbf{800}, 40.} To improve on previous spectroscopic work, the sensitive technique Noise Immune Cavity Enhanced Optical Heterodyne Velocity Modulation Spectroscopy (NICE-OHVMS) has been used to record rovibrational transitions of OH$^+$. Previously this approach has been used to investigate HCO$^{+}$, H$_{3}^{+}$, CH$_{5}^{+}$, and HeH$^{+}$.footnote{J.N. Hodges textit{et al., Chem. Phys.}, (2013), textbf{139}, 164201.}footnote{A.J. Perry textit{et al., J. Chem. Phys.}, (2014), textbf{141}, 101101.} Using an optical frequency comb for precise frequency calibration, the OH$^+$ line centers have been determined with $sim$MHz uncertainties. Here the most precise and accurate list of rovibrational transitions of OH$^{+}$ is presented. These values can then be used to empirically determine rotational transitions through combination difference analysis.
Issue Date:22-Jun-15
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:ACS
Genre:CONFERENCE PAPER/PRESENTATION
Type:Text
Language:English
URI:http://hdl.handle.net/2142/79448
Date Available in IDEALS:2016-01-05


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