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Dunham coefficients of 14 N 2 from CARS measurements of high vibrational states in a low‐pressure discharge
Author(s) -
Lavorel B.,
Millot G.,
Lefebvre M.,
Péalat M.
Publication year - 1988
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250190513
Subject(s) - atomic physics , chemistry , torr , glow discharge , raman spectroscopy , analytical chemistry (journal) , spectral line , excited state , yield (engineering) , vibrational temperature , ground state , physics , plasma , optics , thermodynamics , chromatography , quantum mechanics , astronomy
Abstract Spectroscopic constants of the X 1 Σ g + ground state of 14 N 2 are deduced from CARS spectra recorded in a 4 Torr d.c. N 2 glow discharge. Vibrational states up to ν = 14 have been observed but only the 11 lower levels which have a good signal‐to‐noise ratio have been processed. The Dunham constants that were deduced yield vibrational band centre positions in good agreement with those of Lofthus and Krupenie.