Diode-Laser Measurements of N2-Broadening Coefficients in the ν2 Band of HCN at Low Temperature

N2-Broadening for Methyl Chloride at Low Temperature by Diode-Laser Spectroscopy

“…• C. A similar low-temperature absorption cell has been described in a previous paper (7). The partial pressure of CH 3 Cl ranged from 0.26 to 0.76 mbar and was roughly constant for each broadened line.…”

Hydrogen-Broadening Coefficients in the ν5 Band of Acetylene at Low Temperature

“…The acetylene sample was provided by Air Products with a stated purity of 99.6% and the hydrogen sample by L'Air Liquide with a stated purity of 99.99%. The absorption cell with an optical path length of 40.43 cm, similar to that described previously (9), was cooled down at −100…”

Diode-laser measurements and calculations of N2-broadening coefficients in the ν7 band of ethylene

“…The ethylene and nitrogen gas samples were supplied by LÕAir Liquide with a stated purity of 99.95 and 99.9%, respectively. The low temperature (LT) cell with an optical pathlength of 40.43 cm, similar to that described previously [14], was cooled down at À100°C and the temperature of the gas was kept constant at 173.2 ± 0.5 K. For each broadened line, we used four different pressures of N 2 , ranging from 10 to 43 mbar, the partial pressure of C 2 H 4 was roughly constant in the mixtures ranging from 0.062 to 0.904 mbar. The pressures were measured at room temperature (RT) with two MKS Baratron gauges having a full scale reading of 1.2 and 120 mbar.…”