Premium
N 2 H 2 isotropic Raman Q‐branch linewidths: an Energy‐Corrected Sudden scaling law
Author(s) -
Joubert Pierre,
Bonamy Jeanine,
Gomez Laura,
Bermejo Dionisio
Publication year - 2008
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.1975
Subject(s) - raman spectroscopy , isotropy , scaling , rotational–vibrational spectroscopy , chemistry , scaling law , relaxation (psychology) , energy (signal processing) , diagonal , atomic physics , analytical chemistry (journal) , physics , mathematics , quantum mechanics , excited state , psychology , social psychology , geometry , chromatography
The Energy‐Corrected Sudden (ECS) model has been widely developed to calculate rovibrational Raman linewidths as well as the overlap between lines through the off‐diagonal elements of the relaxation matrix. The accuracy of the results depends on the precision of the input data on which the ECS parameters are fitted. Starting from recent experimental and theoretical data for nitrogen (N 2 ) Q‐branch perturbed by hydrogen from 77 to 580 K, we have determined the ECS parameters for this molecular system and calculated systematically the N 2 H 2 line broadening coefficients for J = 0 to 20 up to 2000 K, which will be useful for combustion diagnostics purposes. Copyright © 2008 John Wiley & Sons, Ltd.