Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7846451 | Journal of Quantitative Spectroscopy and Radiative Transfer | 2017 | 8 Pages |
Abstract
A study of the vibration-rotation absorption spectrum of the D2O molecule in the range 10100-10800Â cm-1 has been performed. The spectrum was recorded using a Fourier Transform Spectrometer with the spectral resolution of 0.05Â cm-1 coupled to the multi-pass White-type cell providing an optical path length of 24Â m. A light-emitting diode was used as the radiation source, giving a high brightness that resulted in an S/N ratio of measurements of about 104. The rovibrational assignment of more than 920 lines was carried out, and the parameters of the spectral lines (i.e. centers, intensity and half-width) were determined by least-squares fitting of the Voigt contour parameters to the experimental data. A total of 530 rotational energy levels belonging to nine vibrational states (301), (103), (400), (221), (122), (320), (004), (023) and (042) and with maximum rotational quantum numbers J=16 and Ka=9 was determined. 101 energy levels were derived from the experiment for the first time.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Spectroscopy
Authors
Viktor I. Serdyukov, Leonid N. Sinitsa, Alexander D. Bykov, Elena R. Polovtseva, Anatolii P. Scherbakov,