IR absorption cross sections of propane broadened by H2 and He between 150 K and 210 K.

Absorption cross sections of cold propane, pure and broadened with H 2 or He, have been recorded in the 650–1250 cm -1 region using an Enclosive Flow Cooling (EFC) cell located at the Australian Synchrotron Far-IR/THz beamline. The chosen temperatures range from 150 to 210 K to replicate similar atmospheric conditions of the giant planets. These cross sections have been normalized using data obtained from the Pacific Northwest National Laboratory, and can be used directly in comparisons with observed spectra and in radiative transfer models. [ABSTRACT FROM AUTHOR]