Fourier transform spectroscopy of (CO2)-C-12-O-18 and (OCO)-O-16-C-12-O-18 in the 3800-8500 cm(-1) region and the global modeling of the absorption spectrum of (CO2)-C-12-O-18

摘要

The absorption spectrum of the 180 enriched carbon dioxide has been recorded at Doppler limited resolution with a Fourier transform spectrometer in the spectral range 3800-8500cm(-1), Seventeen cold bands (14 Sigma-Sigma and 3 Sigma-Sigma) and nine hot bands (9 Pi-Pi) of (CO2)-C-12-O-18, nineteen cold bands (18 Sigma-Sigma and I Sigma-Pi) and eighteen hot bands (6 Sigma-Sigma, 9 Pi-Pi and 3 Delta-Delta) of (OCO)-O-16-C-12-O-18 have been observed. Among them, 14 (CO2)-C-12-O-18, bands and 12 (OCO)-O-16-C-12-O-18 bands are observed for the first time. The spectroscopic parameters G(v), B-v, and centrifugal distortion constants, have been determined for all observed bands. Effective Hamiltonian parameters for the (CO2)-C-12-O-18 isotopic species are retrieved from the global fitting of the observed line positions presented in this paper and collected from the literature. As the result, 65 obtained effective Hamiltonian parameters reproduce 5443 observed line positions of 73 (CO2)-C-12-O-18 bands with RMS = 0.00145 cm(-1). (c) 2007 Elsevier Inc. All rights reserved.