The ro-vibrational Raman spectrum of water vapour υ₂ and 2υ₂

Abstract

Weak spectral features in the Raman spectrum of water vapour associated with the v2 and 2v2 vibrations have been observed. These features have been reproduced by computer simulation using the results of high resolution absorption spectral analyses. Relative intensity measurements allow the determination of the cross section, depolarization ratio and ratio of the two non-vanishing second-order irreducible spherical tensor components for vs. From these quantities, the principal components of the v2 derived polarizability tensor have been determined, and these results, as well as the mean derived polarizability tensor for the 2 v 2 transition, are considered under the bond polarizability theory.

The Raman spectra and cross-sections of the ν2 band of H2O, D2O, and HDO

“…The m 2 Raman band of H 2 O has been analyzed previously in terms of factorized rotational  vibrational wavefunctions, along with an effective transition moment of the polarizabilty [3]. We show here how this scheme is unable to properly account for several spectral features induced by the rotational-vibrational coupling.…”

Ro-vibrational Raman Cross Sections of Water Vapor in the OH Stretching Region

“…Most details of the Q branch of 1 , and many other details of the O, P, R, and S branches of 1 and 3 remained therefore unresolved. Within these limitations, a successful analysis of the spectra was carried out in the frame of the theory of the Raman intensities for asymmetric top molecules (2)(3)(4). High-resolution investigations of the Raman spectrum of water vapor, using nonlinear techniques, have been published too (5)(6)(7).…”

D/H fractionation factor between water vapor and crystal water of copper chloride dihydrate: Statistical mechanical approach based on Raman spectra.

“…Raman data for the bending mode (ν 2 band) by Murphy (1977) for H 2 O, and infrared data by Gupta (1981) for D 2 O. The vibration wavenumbers for H 2 O and D 2 O in vapor phase, the frequency ratios, and the RPFR for the ν 1 , ν 2 , and ν 3 modes are shown in Table 3.…”

“…The vibration wavenumbers for water vapor used for the calculation of the RPFR, were taken from the literature (Fraley and Narahari Rao, 1969;Murphy, 1977;Gupta, 1981), and are shown in Table 3. Table 2).…”