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High-Resolution Fourier Transform Spectroscopy of 14N2: Analysis of the (1–0), (2–1) Bands of the B3Πg–W3Δu System

✍ Scribed by A. Faye; Q. Kou; R. Farrenq; G. Guelachvili

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
577 KB
Volume
197
Category
Article
ISSN
0022-2852

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✦ Synopsis

The extension of high-resolution observation of the electronic emission spectrum of 14 N 2 toward the infrared domain is presented. To date, rotational analysis of the widely investigated spectrum of the N 2 molecule was done in a spectral domain ranging from 2500 cm Ϫ1 to the UV. We have recorded for the first time the infrared part of the 14 N 2 spectrum from 1250 to 2250 cm Ϫ1 , using the Fourier transform spectrometer of Laboratoire de Photophysique Mole ´culaire (LPPM) at an unapodized resolution of 0.0043 cm Ϫ1 . A complete rotational analysis is performed for the (1 3 0), (2 3 1), (0 4 1), (1 4 2) bands of the B 3 ⌸ g -W 3 ⌬ u system, not included in any previous analysis. Spectroscopic parameters for the v ϭ 0, v ϭ 1, v ϭ 2 levels of the B 3 ⌸ g and the W 3 ⌬ u states, consistent with those previously reported but with improved accuracy, are obtained from the experimental wavenumbers by a nonlinear least-squares procedure.

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