Abstract
Theoretical expressions for the collision-induced absorption spectra of a dipolar and a homonuclear diatomic pair are presented. For the dipolar species, the line strengths and transition frequencies are taken from the HITRAN database, whereas for the homonuclear molecule, the polarizability matrix elements and spectroscopic parameters are obtained from the literature. As specific examples, we consider the double fundamental vibrational transition in CO2−N2, and the H2O−N2 transition in the region of the nitrogen fundamental. For the former pair, the theoretical results are in good agreement with experimental data. For the latter pair, we show that the collision-induced absorption for high humidity conditions is larger than that of N2−N2 pairs above 2500 cm−11, but for lower wavenumbers, it is much weaker than the measured foreign continuum resulting from the far wings of allowed transitions.
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References
Frommhold, L. (1993) Collision-induced Absorption in Gases, Cambridge University Press, Cambridge.
Moreau, G., Boissoles, J., Le Doucen, R., Boulet, C, Tipping, R. H., and Ma, Q. (2001) Experimental and theoretical study of the collision-induced fundamental absorption spectra of N2−O2 and O2−N2 pairs, J. Quant. Spectrosc. Radiat. Transfer, 69, 245–256.
Moreau, G., Boissoles, J., Boulet, C., Tipping, R.H., and Ma, Q. (2000) Theoretical study of the collision-induced fundamental absorption spectra of O2−O2 pairs for temperatures between 193 and 273K, J. Quant. Spectrosc. Radiât. Transfer, 64, 87–107.
Boissoles, J., Tipping, R. H., and Boulet, C. (1994) Theoretical study of the collision-induced fundamental absorption spectra of N2−N2 pairs for temperatures between 77 and 297 K, J. Quant. Spectrosc. Radiat. Transfer, 51, 615–627.
Brown, A., Tipping, R. H., and Maté, B. (2000) Theoretical study of the collision-induced double transition CO2(v3=1) + N2(v=l) ← CO2(v3=0) + N2(v=0) at 296K, J. Mol. Spectrosc, 204, 153–158.
Brown, A. and Tipping, R. H., (2001) Theoretical study of collision-induced double transitions in CO2−X2 (X2 = H2, N2, and O2) pairs, J. Mol. Spectrosc, 205, 319–322.
Rothman, L.S., Rinsland, C. P., Goldman, A., Massie, S.T., Edwards, D. P., Flaud, J.-M., Perrin, A., Camy-Peyret, C., Dana, V., Mandin, J.-Y., Schroeder, J., McCann, A., Gamache, R. R., Wattson, R. B., Yoshino, K., Chance, K., Jucks, K., Brown, L. R., Nemtchinov, V., and Varanasi, P. (1998) The HITRAN molecular spectroscopic database and HAWKS (HITRAN Atmospheric Workstation): 1996 edition, J. Quant. Spectrosc. Radiât. Transfer, 60, 665–710.
Poll, J. D. and Hunt, J.L. (1976) On the moments of the pressure-induced spectra of gases, Can. J. Phys., 54, 461–470.
Birnbaum, G. and Cohen, E. R. (1976) Theory of line shape in pressure-induced absorption, Can. J. Phys., 54, 593–602.
Borysow, A. and Frommhold, L. (1986) Collision-induced rototranslational absorption spectra of N2−N2 pairs for temperatures from 50 to 300 K, Astrophys. J., 311, 1043–1057.
Maté, B., Fraser, G. T., and Lafferty, W.J. (2000) Intensity of the simultaneous vibrational absorption CO2(v3=l) + N2(v=l) ← CO2(v3=0)+ N2(v=0) at 4680cm−1, J. Mol. Spectrosc, 201, 175–177.
Tobin, D.C., Strow, L.L., Lafferty, W. J., and Olson, W. B. (1996) Experimental investigation of the self- and N2 broadened continuum within the ν 2 band of water vapor, Appl. Opt., 35, 4724–4734.
Tobin, D.C., Best, F. A., Brown, P.D., Clough, S.A., Dedecker, R. G., Ellingson, R. G., Garcia, R. K., Howell, H.B., Knuteson, R. O., Mlawer, E. J., Revercomb, H. E., Short, J. F., van Deist, P. F., and Waiden, V. P. (1999) Downwelling spectral radiance observations at the SHEBA ice station: Water vapor continuum measurements from 17–26µm, J. Geophys. Res., Atmospheres, 104, 2081–2092.
Burch, D.E. (1981) Continuum absorption by H20, AFGL-TR-81–0300.
Burch, D.E. and Alt, R. L. (1984) Continuum absorption by H20 in the 700–1200 cm−11 and 2400-2800 cm−11 windows, AFGL-TR-84–0128.
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© 2003 Springer Science+Business Media Dordrecht
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Brown, A., Tipping, R.H. (2003). Collision-Induced Absorption in Dipolar Molecule — Homonuclear Diatomic Pairs. In: Camy-Peyret, C., Vigasin, A.A. (eds) Weakly Interacting Molecular Pairs: Unconventional Absorbers of Radiation in the Atmosphere. NATO Science Series, vol 27. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0025-3_7
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DOI: https://doi.org/10.1007/978-94-010-0025-3_7
Publisher Name: Springer, Dordrecht
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