An atom-atom interaction potential for the H2O–A system is proposed in a form that depends on the normal coordinates q of an H2O molecule. Vibrational and rotational corrections to the effective potential for H2O–He and H2O–Ar systems are calculated and their impact on the calculated broadening coefficients γ is analysed for the absorption lines of different vibrational H2O bands in the case of broadening by helium and argon. It is shown that excitation of the stretching modes of vibrations in the H2O molecule leads to an increase in the calculated broadening coefficients γ. Accounting for rotational corrections, γ increases by 15% for the lines with rotational quantum number K a = 9 for the lower transition state in the case of broadening by He and by 4% when broadening by Ar.
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V. I. Starikov, T. M. Petrova, A. M. Solodov, and A. A. Solodov, “Effective potentials for H2O–He and H2O–Ar systems. Isotropic induction—dispersion potentials,” Eur. Phys. J., D 71 (5) (2017). doi 10.1140/epjd/e2017-70685-9
J. O. Hirshfelder, C. F. Curtiss, and R. B. Bird, The Molecular Theory of Gases and Liquids (Wiley-Interscience, 1964).
B. Labani, J. Bonamy, D. Robert, J.-M. Hartmann, and J. Taine, “Collisional broadening of rotationvibration lines for asymmetric top molecules. I. Theoretical model for both distant and close collisions,” J. Chem. Phys. 84 (21), 4256–4267 (1986).
S. P. Neshyba and R. R. Gamache, I”mproved linebroadening coefficients for asymmetric rotor molecules with application to ozone line broadened by nitrogen,” J. Quant. Spectrosc. Radiat. Transfer 50 (5), 443–453 (1993).
V. I. Starikov, “Vibration-rotation interaction potential for H2O–A system,” J. Quant. Spectrosc. Radiat. Transfer 155, 49–56 (2015)
A. R. Hoy, I. M. Mills, and G. Strey, “Anharmonic force constant calculations,” Mol. Phys. 24 (6), 1265–1290 (1972).
M. R. Aliev and J. K. J. Watson, “Higher-order effects in the vibration-rotation spectra of semirigid molecules,” in Molecular Spectroscopy, Modern Research, Ed. by K.N. Rao (Academic press, London, 1985), vol. 3, p. 1–67
C. Camy-Peyret and J. M. Flaud, “Vibration-rotation dipole moment operator for asymmetric rotors,” in Molecular Spectroscopy, Modern Research, Ed. by K.N. Rao (Academic press, London, 1985), vol. 3, p. 69–110.
A. D. Bykov, L. N. Sinitsa, and V. I. Starikov, Experimental and Theoretical Methods in the Spectroscopy of Water Vapor Molecules (Publishing House of SB RAS, Novosibirsk, 1999) [in Russian].
T. M. Petrova, A. M. Solodov, A. A. Solodov, and V. I. Starikov, “Vibrational dependence of an intermolecular potential for H2O–He system,” J. Quant. Spectrosc. Radiat. Transfer 129, 241–253 (2013).
T. M. Petrova, A. M. Solodov, A. A. Solodov, and V. I. Starikov, “Measurements and calculations of Arbroadening and shifting parameters of water vapor transitions of ν1 + ν2 + ν3 band,” J. Quant. Spectrosc. Radiat. Transfer 148, 116–126 (2014).
D. Robert and J. Bonamy, “Short range force effects in semiclassical molecular line broadening calculations,” J. Phys. (Paris) 40, 923–943 (1979).
A. D. Bykov, N. N. Lavrent’eva, and L. N. Sinitsa, “Resonance functions of the theory of broadening and shift of lines for actual trajectories,” Atmos. Ocean. Opt. 5 (11), 728–739 (1992).
D. W. Steyert, W. F. Wang, J. M. Sirota, N. M. Donahue, and D. C. Reuter, “Hydrogen and helium pressure broadening of water transitions in the 380–600 cm–1 region,” J. Quant. Spectrosc. Radiat. Transfer 83 (2), 183–191 (2004).
P. Poddar, S. Mitra, M. M. Hossain, D. Biswas, P. N. Ghosh, and B. Ray, “Diode laser spectroscopy of He, N2 and air broadened water vapour transitions belonging to the 2ν1 + ν2 + ν3 band,” Mol. Phys. 108 (15), 1957–1964 (2010).
A. Lucchesini, S. Gozzini, and C. Gabbanini, “Water vapor overtones pressure line broadening and shifting measurements,” Eur. Phys. J., D 8 (2), 223–226 (2000).
B. E. Grossmann and E. V. Browell, “Water-vapor line broadening and shifting by air, nitrogen, oxygen, and argon in the 720-nm wavelength region,” J. Mol. Spectrosc. 138 (2), 562–595 (1989).
C. Claveau, A. Henry, D. Hurtmans, and A. Valentin, “Narrowing and broadening parameters of H2O lines perturbed by He, Ne, Ar, Kr and nitrogen in the spectral range 1850–2140 cm–1,” J. Quant. Spectrosc. Radiat. Transfer 68 (3), 273–298 (2001).
Original Russian Text © V.I. Starikov, T.M. Petrova, A.M. Solodov, A.A. Solodov, V.M. Deichuli, 2017, published in Optika Atmosfery i Okeana.
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Starikov, V.I., Petrova, T.M., Solodov, A.M. et al. Effective Atom-Atom Potentials for H2O–He and H2O–Ar Systems. Atmos Ocean Opt 31, 137–145 (2018). https://doi.org/10.1134/S1024856018020148
- atom-atom potential
- collisional broadening