Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9599128 | Journal of Quantitative Spectroscopy and Radiative Transfer | 2005 | 57 Pages |
Abstract
High-resolution spectra of H2O were recorded with a Fourier-transform spectrometer covering H2O transitions from 2900 to 8000 cmâ1. Over 13,000 absorptions were measured to determine line positions, strengths and self-broadened half-width coefficients. The H2Â 16O line strengths of the (0Â 3Â 0)-(0Â 1Â 0), (1Â 1Â 0)-(0Â 1Â 0), (0Â 1Â 1)-(0Â 1Â 0) and (0Â 3Â 0)-(0Â 0Â 0), (1Â 1Â 0)-(0Â 0Â 0), (0Â 1Â 1)-(0Â 0Â 0) bands were fitted to a quantum mechanical model which involves the interactions between the (0Â 3Â 0), (1Â 1Â 0), and (0Â 1Â 1) vibrational states. Also fitted were experimental strengths of the hot bands; (1Â 2Â 0)-(0Â 1Â 0) and (0Â 2Â 1)-(0Â 1Â 0). The model includes 14 dipole matrix elements for B- and A-type transitions. The measured line positions were used along with hot water emission measurements (for the (0Â 3Â 0), (0Â 4Â 0), and (0Â 5Â 0) states of H2Â 16O) in an analysis to obtain high-accuracy energy level values in the (0Â 3Â 0), (1Â 1Â 0), (0Â 1Â 1), (0Â 4Â 0), (1Â 2Â 0), (0Â 2Â 1), (2Â 0Â 0), (1Â 0Â 1), (0Â 0Â 2), and (0Â 5Â 0) vibrational states of H2Â 16O and the (1Â 1Â 0) and (0Â 1Â 1) states of H2Â 17O. Also included were measurements and analysis of self-broadened half-widths for over 4700 absorptions between 4405 and 7729 cmâ1. The results from this investigation provide new information for the noted H2Â 17O bands and present a more accurate representation of the measured H2Â 16O bands.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Spectroscopy
Authors
Robert A. Toth,