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Title:Observation of two Ω=0+ excited electronic states in jet-cooled LaH
Author(s):Yarlagadda, Suresh
Contributor(s):Nakhate, Sanjay G.; Bhattacharyya, Soumen; Mukund, Sheo
Subject(s):Metal containing
Abstract:Lanthanum hydride (\chem{LaH}) molecules were produced in a pulsed supersonic molecular beam by reaction of laser produced lanthanum metal plasma with $\sim$2\% ammonia seeded in helium gas. Rotationally resolved laser-induced fluorescence excitation bands involving two excited electronic states, originating from $\nu$=0 of ground state \textit{X}$^{1}$$\Sigma$$^{+}$ were observed with band origins at 21970.71(1) and 22100.31(3) cm$^{-1}$. Rotational analysis confirmed these transitions as \textit{$\Omega$}=0$^{+}$- \textit{X}$^{1}$$\Sigma$$^{+}$. The rotational lines up to J$^{"}$=6 were observed in the 21970.71 cm$^{-1}$ band. However, for the 22100.31 cm$^{-1}$ band, rotational lines up to J$^{"}$=12 in the P-branch and J$^{"}$up to 10 in the R-branch was observed. The molecular constants for both the excited states were determined by fitting rotational line wavenumbers to an effective Hamiltonian operator for \textit{$\Omega$}=0$^{+}$ and \textit{X}$^{1}$$\Sigma$$^{+}$ state using the Pgopher program.
Issue Date:2014-06-17
Publisher:International Symposium on Molecular Spectroscopy
Citation Info:Yarlagadda, S.; Nakhate, S.G.; Bhattacharyya, S.; Mukund, S. OBSERVATION OF TWO Ω=0+ EXCITED ELECTRONIC STATES IN JET-COOLED LaH. Proceedings of the International Symposium on Molecular Spectroscopy, Urbana, IL, June 16-21, 2014. DOI: 10.15278/isms.2014.TK10
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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