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Laser-Induced Fluorescence and Fourier Transform Spectroscopy of NiCl: Identification of a Low-Lying 2Σ+ State (1768 cm−1)

✍ Scribed by A. Poclet; Y. Krouti; T. Hirao; B. Pinchemel; P.F. Bernath

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 266 KB
Volume: 204
Category: Article
ISSN: 0022-2852
DOI: 10.1006/jmsp.2000.8186

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✦ Synopsis

From a comparison with the spectrum of NiF, a low-lying 2 ⌺ ϩ state is expected to lie in the first 2000 cm Ϫ1 above the ground X 2 ⌸ 3/ 2 state of NiCl. The identification of this 2 ⌺ ϩ (v ϭ 0) state (at 1768 cm Ϫ1 ) has been carried out through the analysis of two electronic transitions 2 ⌸ 3/2 -2 ⌺ ϩ (22 720 cm Ϫ1 ) and 2 ⌸ 1/2 -2 ⌺ ϩ (23 210 cm Ϫ1 ) recorded by high-resolution Fourier transform spectroscopy. Dispersed fluorescence spectroscopy allowed these transitions to be located on an absolute energy-level diagram that includes the previously studied electronic states.

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