The Pure Rotational Spectrum Of Mgcl In The (2)2πi Excited State

Herman, Tyler J.

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https://hdl.handle.net/2142/116825 Copy

Description

Title

The Pure Rotational Spectrum Of Mgcl In The (2)2πi Excited State

Author(s)

Herman, Tyler J.

Contributor(s)

• Ziurys, Lucy M.
• Crowther, Parker

Issue Date

2022-06-23

Keyword(s)

Metal containing

Abstract

The millimeter/submillimeter spectrum of magnesium chloride (MgCl) has been measured in an electronic excited state, using direct absorption spectroscopy in the range of 240-310 GHz. The molecule was synthesized by reacting chlorine gas (Cl$_2$) with magnesium vapor, produced using a Broida-type oven in the presence of argon carrier gas. Seven rotational transitions in each of six isotopologues ($^{24}$Mg$^{35}$Cl, $^{24}$Mg$^{37}$Cl, $^{25}$Mg$^{35}$Cl, $^{25}$Mg$^{37}$Cl, $^{26}$Mg$^{35}$Cl, $^{26}$Mg$^{37}$Cl) were measured in the ground vibrational state, with a number of vibrationally excited satellite lines (v=1-4) also being observed for each species. From the data, rotational, fine structure, and $^{25}$Mg hyperfine ($^{25}$MgCl only) parameters were determined for the six isotopologues in this state, as well as equilibrium constants and the equilibrium bond length, r$_e$ = 2.54 \AA. Based on theoretical calculations, this excited state has been identified as (2)$^2\Pi_i$, which has never before been observed experimentally. The excited state manifold of MgCl has been the subject of a number of computational studies, and is of interest for laser cooling experiments.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Handle URL

https://hdl.handle.net/2142/116825

DOI

https://doi.org/10.15278/isms.2022.RK02

Copyright and License Information

Copyright 2022 held by the authors

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