MILLIMETER-WAVE SPECTROSCOPY OF MgI (~X2Σ+)

Burton, Mark

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https://hdl.handle.net/2142/96901 Copy

Description

Title

MILLIMETER-WAVE SPECTROSCOPY OF MgI (~X2Σ+)

Author(s)

Burton, Mark

Contributor(s)

• Ziurys, Lucy M.
• Kilchenstein, K. M.

Issue Date

6/19/2017

Keyword(s)

Small molecules

Abstract

The pure rotational spectrum of MgI in its ground electronic state (~{X}$^{2}$$Sigma$$^{+}$) has been measured using millimeter/submillimeter wave direct-absorption techniques. Rotational transitions arising from the v = 0, 1, and 2 vibrational states of $^{24}$MgI, as well as the v = 0 state for the isotopologues ($^{25}$MgI and $^{26}$MgI), have been measured in their natural abundance in the region of 200 – 300 GHz. Rotational, centrifugal distortion, and spin-rotation constants were determined for each isotopologue and the excited vibrational states of $^{24}$MgI. Equilibrium parameters B$_{e}$, $alpha$$_{e}$, D$_{e}$, and $gamma$$_{e}$ were ascertained and used to calculate an equilibrium bond length (r$_{e}$) for MgI. The spin-rotation coupling constants of several magnesium monohalides were examined and the contribution to the spin-rotation parameter appears to be dominated by second order spin-orbit coupling of the nearby excited A$^{2}$$Pi$ electronic state.

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

Permalink

http://hdl.handle.net/2142/96901

DOI

10.15278/isms.2017.MH06

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