THE ROTATIONAL SPECTRA OF OH DOUBLET PI ISOTOPOLOGUES
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Date
2012
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Ohio State University
Abstract
Two new sources of THz radiation have enabled in depth studies of the rest frequencies for rarer isotopologues of the hydroxyl radical (OH). These sources operate from 1.4-2.0 THz and 2.47-2.75 THz, and span the fundamental transitions for OH $^2\Pi_{3/2}$ and $^2\Pi_{1/2}$ and its rare oxygen isotopologues. Transitions for OD and several v = 1 states are also accessible. The new measurements add significantly to the wealth of high-resolution measurements for the OH radical. Analyses using combined data sets are underway, with the goal of providing a full isotope-independent Dunham analysis. Measurements include the rare $^{17}$OH and $^{17}$OD isotopologues, we will present the magnetic and electric quadrupole hyperfine parameters for $^{17}$O and compare these to values determined via LMR, EPR and theory.
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Author Institution: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109-8099