Air-broadening coefficients of (CH3Cl)-Cl-35 and (CH3Cl)-Cl-37 rovibrational lines and their temperature dependence by a semi-classical approach

作者：Buldyreva J^*

来源：Journal of Quantitative Spectroscopy and Radiative Transfer, 2013, 130: 315-320.

DOI：10.1016/j.jqsrt.2013.04.003

• Methyl chloride
• N-2-broadening
• O-2-broadening
• Air-broadening
• Temperature exponent
• Line lists
• J- and K-dependences
• Semi-classical calculations

Air-broadening coefficients and associated temperature exponents for (CH3Cl)-Cl-35 and (CH3Cl)-Cl-37 (vib)rotational transitions of R-type branches are calculated by a semi-classical approach previously validated on extensive room-temperature measurements. Contrary to the theoretical methods used in the literature for the CH3X-type absorbers, the active molecule is rigorously treated as a symmetric top with long- as well as short-range interactions and the exact classical trajectories are employed for the relative molecular motion. Analogous parameters additionally computed for N-2- and O-2-broadening provide a very favorable comparison with available low-temperature experimental results and ensure the reliability of the reported values in the interval of atmospheric interest 200-300 K. Numerical data for 0 <= J <= 70 and K <= 20 are given as supplementary materials for use in atmospheric applications and spectroscopic databases.

• 出版日期2013-11