The (1,0) band of the [13.10] ω=1 – x 3σ−(0+) transition of tungsten sulfide, ws, observed by ils-fts

Ratay, Brendan M.

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https://hdl.handle.net/2142/107397 Copy

Description

Title

The (1,0) band of the [13.10] ω=1 – x 3σ−(0+) transition of tungsten sulfide, ws, observed by ils-fts

Author(s)

Ratay, Brendan M.

Contributor(s)

• O'Brien, Leah C.
• O'Brien, James J.
• Bales, Kristin N.
• Harms, Jack C.

Issue Date

2020-06-23

Keyword(s)

Small molecules

Abstract

The (1,0) vibrational band of the [13.10] $\Omega$=1 – $\it{X}$ $^{3}\Sigma^{-}$(0$^{+}$) transition of tungsten sulfide (WS) has been measured in absorption using Intracavity Laser Spectroscopy with Fourier transform detection (ILS-FTS). WS was synthesized in a 0.05-0.15 A DC current plasma discharge within a tungsten lined hollow cathode at 625 mTorr with 65\% Ar, 17.5\% He, 17.5\% H$_{2}$, and a trace amount of CS$_{2}$. The spectrum was calibrated using literature values for argon lines and PGOPHER’s calibration feature [C.M. Western, J. Quant. Spectrosc. Radiat. Transfer 2016 (186), 221-242]. Three rotational branches (P , Q-, and R-branch) with four WS isotopologues ($^{182}$WS, $^{183}$WS, $^{184}$WS, and $^{186}$WS) were observed in the spectrum. Molecular constants for these isotopologues were determined for both electronic states. The line positions of the (0,0) band of this transition [L.F. Tsang et al., J. Mol. Spectrosc. 2019 (359), 31-36] were included in the fit. The results of the analysis will be presented, and compared with calculations [L.F. Tsang et al., 2019].

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

Text

Language

eng

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http://hdl.handle.net/2142/107397

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