TY - JOUR
T1 - N2-collisional broadening coefficients of lines in the ν2 band of chloromethane from low to room temperatures
AU - Leonis, Sylvain
AU - Lepère, Muriel
PY - 2020/3
Y1 - 2020/3
N2 - Using a high-resolution tunable diode-laser spectrometer, we measured N2-collisional broadening coefficients in the ν2 band of chloromethane. Measurements have been realized for 15 lines at room temperature and 5 lines at different low temperatures. For each line under study, we have recorded spectra at 4 pressures of perturber gas ranging from 12 to 55 mbar. The experimental line profiles, at each pressure and each temperature, have been fitted with three different line shape models. From these fits, we obtained the collisional half-width and accurately deduced N2-broadening coefficients at up to 4 temperatures between 200 K and 296 K. Using the usual empirical power law, we determined the temperature dependence parameter of the N2-broadening coefficients.
AB - Using a high-resolution tunable diode-laser spectrometer, we measured N2-collisional broadening coefficients in the ν2 band of chloromethane. Measurements have been realized for 15 lines at room temperature and 5 lines at different low temperatures. For each line under study, we have recorded spectra at 4 pressures of perturber gas ranging from 12 to 55 mbar. The experimental line profiles, at each pressure and each temperature, have been fitted with three different line shape models. From these fits, we obtained the collisional half-width and accurately deduced N2-broadening coefficients at up to 4 temperatures between 200 K and 296 K. Using the usual empirical power law, we determined the temperature dependence parameter of the N2-broadening coefficients.
KW - Chloromethane
KW - Collisional broadening
KW - Diode-laser
KW - Nitrogen
KW - Temperature dependence
UR - http://www.scopus.com/inward/record.url?scp=85082174741&partnerID=8YFLogxK
U2 - 10.1016/j.jms.2020.111269
DO - 10.1016/j.jms.2020.111269
M3 - Article
AN - SCOPUS:85082174741
SN - 0022-2852
VL - 369
JO - Journal of Molecular Spectroscopy
JF - Journal of Molecular Spectroscopy
M1 - 111269
ER -