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Theoretical Study of the Collision-Induced Double Transition CO2 (ν3 = 1) + N2 (ν1 = 1) ← CO2 (ν3 = 0) + N2 (ν1 = 0) at 296 K

✍ Scribed by Alex Brown; R.H. Tipping; Belén Maté

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
97 KB
Volume
204
Category
Article
ISSN
0022-2852

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✦ Synopsis

A procedure is presented for the calculation of the double vibrational collision-induced absorption CO 2 ( 3 ϭ 1) ϩ N 2 ( 1 ϭ 1) 4 CO 2 ( 3 ϭ 0) ϩ N 2 ( 1 ϭ 0) on the basis of quantum lineshapes computed using an isotropic potential and dipole-induced dipole functions. The linestrengths and energies of the vibration-rotation transitions are treated explicitly for N 2 , utilizing the HITRAN database for CO 2 . The theoretical absorption profile is compared to recent experimental results. By narrowing the width of the individual lines contributing to the overall absorption profile relative to their values determined for N 2 -N 2 collision-induced absorption, excellent agreement between theory and experiment is obtained.

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