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Title:Laser Spectroscopy Of The C2π (41242 Cm−1) And 2∆ (42192 Cm−1) States Of Magnesium Hydride
Author(s):Caron, Nicholas
Contributor(s):Adam, Allan G.; Tokaryk, Dennis
Subject(s):Metal containing
Abstract:Two laser-induced fluorescence techniques were used to access the high-lying C$^{2}\Pi$ state (41242 \wn) in the metal-bearing molecule MgH. First, we directly excited the C$^{2}\Pi$ state from the X$^{2}\Sigma^{+}$ ground state with UV light produced by frequency-doubling pulsed visible laser light. Second, a resonant two-photon experiment was performed with different laser beams tuned to the A$^{2}\Pi$ - X$^{2}\Sigma^{+}$ and C$^{2}\Pi$ - A$^{2}\Pi$ transitions. Term energies for levels up to J = 11.5 were fit to a $^{2}\Pi$ Hamiltonian to yield rotational parameters B = 6.1045(10) \wn, D = 3.176(86)$\times10^{-4}$ \wn, A = 3.843(60) \wn, and p = -2.653(88) $\times10^{-2}$ \wn. We also observed levels of a $^{2}\Delta$ state (42192 \wn) up to J = 4.5 with the two-photon technique. Guntch previously observed the $^{2}\Delta$ - A$^{2}\Pi$ spectrum in 1937, but assigned the upper state as $^{2}\Sigma^{-}$. The molecular parameters determined for the $^{2}\Delta$ state are B = 6.2861(23) \wn and A = -0.168(17) \wn.
Issue Date:2014-06-17
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:Caron, N.; Adam, A.G.; Tokaryk, D. LASER SPECTROSCOPY OF THE C2Π (41242 cm−1) AND 2∆ (42192 cm−1) STATES OF MAGNESIUM HYDRIDE. Proceedings of the International Symposium on Molecular Spectroscopy, Urbana, IL, June 16-21, 2014. DOI: 10.15278/isms.2014.TK01
Genre:Conference Paper / Presentation
Rights Information:Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License.
Date Available in IDEALS:2014-09-17

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