A FRESH LOOK AT THE B1-X0⁺ and A1-X0⁺ TRANSITIONS IN TUNGSTEN OXIDE, WO: EVIDENCE OF AN AVOIDED CROSSING?

O'Brien, Leah C

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https://hdl.handle.net/2142/122600 Copy

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Title

A FRESH LOOK AT THE B1-X0⁺ and A1-X0⁺ TRANSITIONS IN TUNGSTEN OXIDE, WO: EVIDENCE OF AN AVOIDED CROSSING?

Author(s)

O'Brien, Leah C

Contributor(s)

• O'Brien, James J
• Bales, Kristin N

Issue Date

2023-06-20

Keyword(s)

• Electronic structure
• potential energy surfaces

Abstract

The complex electronic structure of transition metal diatomic molecules, such as tungsten monoxide (WO), makes them intriguing targets for high level spectroscopic analysis. A plethora of electrons and accessible valence orbitals make WO a difficult molecule to model computationally due to the large number of possible electronic interactions. The (0,0) and (0,1) vibrational bands of the A1-X0⁺ and B1-X0⁺ transitions of WO were recorded in absorption at Doppler-limited resolution using intracavity laser spectroscopy integrated with a Fourier-transform spectrometer [for the (0,1) band] and a 1-m monochromator with CCD detector [for the (0,0) band]. The target WO molecules were produced in the plasma discharge of a tungsten-lined copper hollow cathode, using a gas mixture of approximately 70% Ar and 30% H2 giving a reaction chamber pressure of about 1 torr total. All 4 stable WO isotopologues were observed and analyzed. Initial fits using mass-constained parameters based on the most abundant isotope were not successful, and hint at strong interactions between the two excited electronic states.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Language

eng

Handle URL

https://hdl.handle.net/2142/122600

DOI

https://doi.org/10.15278/isms.2023.7103

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