Broadening and shifting coefficients of rotation–vibrational lines in the fundamental and first overtone bands of HCl and HBr induced by oxygen and air

Measurements of N2, CO2, Ar, O2 and Air Pressure Broadening Coefficients of the HCl P(5) Line in the 1–0 Band Using an Interband Cascade Laser

“…While in those two references, the measurement temperature wase 298 K, which was 4 K higher than our measurement. Additionally, the pressure ranges were higher than ours-2-11 atm in Ref [28], up to 5 atm in Ref [29].…”

“…For the O 2 induced pressure broadening coefficient, the relative difference is 7.5% to Ref [28], and 3.2% to Ref [29] in which the uncertainty was not mentioned. While in those two references, the measurement temperature wase 298 K, which was 4 K higher than our measurement.…”

FTIR-based measurements of self-broadening and self-shift coefficients as well as line strength in the first overtone band of HCl at 1.76 µM

“…Asfin et al [44] recently measured γ air coefficients of HCl 2-0 band and showed a similar disagreement with the De Rosa et al study [29] by À 3% for the P4 line, whereas reasonable agreement was found for the R3 line. In addition, De Rosa et al's measurements were limited to a much smaller pressure range of 50-100 Torr.…”

“…The exact reason for the disagreement is under study and probably also has to do with the much smaller spectral coverage of the laser measurement in combination with the much smaller pressure range of de Rosa. This assumption is supported by a comparison of Asfin et al's [44] and De Rosa's HCl 2-0 air-broadening.…”

“…Fig. 10 compares the δ self from the present study to experimental data by Pine and Fried [21] for the 1-0 band, De Rosa et al [29] for the P4 and R3 lines of the 2-0 band, and to predicted values from using the Hartmann and Boulet [44] theory.…”