Millimeter-wave spectroscopy of KO: Establishing the electronic ground state
Burton, Mark
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https://hdl.handle.net/2142/100477
Description
Title
Millimeter-wave spectroscopy of KO: Establishing the electronic ground state
Author(s)
Burton, Mark
Contributor(s)
Ziurys, Lucy M.
Bucchino, Matthew
Sheridan, Phillip M.
Russ, Benjamin
Issue Date
2018-06-20
Keyword(s)
Radicals
Abstract
The ground electronic state of potassium monoxide (KO) has yet to be conclusively assigned, despite both experimental and theoretical investigations of this species. The ground state is either 2Πi (as for LiO and NaO) or 2Σ + (as for RbO and CsO), both of which are predicted to lie close in energy for KO. To solve this problem, we have conducted millimeterwave direct absorption spectroscopy of KO. This species was synthesized via the reaction of potassium vapor, generated by a Broida-type oven, with nitrous oxide. We have found patterns that we have identified as the Ω = 3/2 and 1/2 ladders of a 2Πi state, as well as a 2Σ + state. Rotational and fine structure constants have been accurately determined assuming the 2Πi and 2Σ + assignments.
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