Observation of two Ω=0+ excited electronic states in jet-cooled LaH

Yarlagadda, Suresh

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https://hdl.handle.net/2142/50797 Copy

Description

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

Issue Date

2014-06-17

Keyword(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."

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

English

Permalink

http://hdl.handle.net/2142/50797

DOI

https://doi.org/10.15278/isms.2014.TK10

Copyright and License Information

Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/

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