Nitrogen-Broadening Parameters for Atmospheric Spectra Modelling of the ν 3 Band of SF 6 .

The infrared absorption of the ν 3 band region of SF 6, at temperatures spanning the 130 to 297 K range, has been reexamined using improved instrumentation with one goal: to estimate the broadening of parameters by nitrogen gas. These parameters are compared to previous literature predictions and an extended set of IR cross-sections is proposed and compared to other existing datasets.