TY - JOUR
T1 - H2-broadening in the v7 band of ethylene by diode-laser spectroscopy
AU - Bouanich, J.-P.
AU - Blanquet, G.
AU - Walrand, J.
AU - Lepère, M.
N1 - Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.
PY - 2003/3/1
Y1 - 2003/3/1
N2 - Using a tunable diode-laser spectrometer, we have measured H-broadening coefficients for 34 lines of CH in the v fundamental band. The studied transitions J′,K′, K′ ← J″, K″, K″ with J″ ranging from 2 to 23, K″ from 0 to 4, and K″ from 2 to 22 in the P, Q, and R branches are located in the spectral range 919-1023 cm. The collisional widths are obtained by modeling each spectral line with a Voigt and a Rautian profile. The measured broadening coefficients belonging to transitions with the same J″ generally increase with increasing K″ and these coefficients decrease slightly on the whole with increasing J″. These behaviors can be roughly predicted by an approximate semiclassical calculation performed by using in addition to the weak electrostatic contributions a simple formalism for the contribution of the intermolecular potential.
AB - Using a tunable diode-laser spectrometer, we have measured H-broadening coefficients for 34 lines of CH in the v fundamental band. The studied transitions J′,K′, K′ ← J″, K″, K″ with J″ ranging from 2 to 23, K″ from 0 to 4, and K″ from 2 to 22 in the P, Q, and R branches are located in the spectral range 919-1023 cm. The collisional widths are obtained by modeling each spectral line with a Voigt and a Rautian profile. The measured broadening coefficients belonging to transitions with the same J″ generally increase with increasing K″ and these coefficients decrease slightly on the whole with increasing J″. These behaviors can be roughly predicted by an approximate semiclassical calculation performed by using in addition to the weak electrostatic contributions a simple formalism for the contribution of the intermolecular potential.
UR - http://www.scopus.com/inward/record.url?scp=0038060382&partnerID=8YFLogxK
U2 - 10.1016/S0022-2852(02)00034-6
DO - 10.1016/S0022-2852(02)00034-6
M3 - Article
AN - SCOPUS:0038060382
SN - 0022-2852
VL - 218
SP - 22
EP - 27
JO - Journal of molecular spectroscopy
JF - Journal of molecular spectroscopy
IS - 1
ER -