Study of HDO absorption in the 11,200-12,400 cm-1 range using LED-based Fourier transform spectroscopy
Autor: | Alexander D. Bykov, Leonid N. Sinitsa, Viktor I. Serdyukov, E. R. Polovtseva, A.P. Scherbakov, Boris A. Voronin |
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Jazyk: | angličtina |
Rok vydání: | 2017 |
Předmět: |
Radiation
Materials science 010304 chemical physics 010504 meteorology & atmospheric sciences business.industry светоизлучающие диоды Analytical chemistry Rotational–vibrational spectroscopy Фурье преобразование 01 natural sciences Atomic and Molecular Physics and Optics Fourier transform spectroscopy Spectral line Spectral line shape Optics спектральные линиии 0103 physical sciences Spectral resolution Fourier transform infrared spectroscopy Absorption (electromagnetic radiation) business Spectroscopy Water vapor 0105 earth and related environmental sciences |
Zdroj: | Journal of Quantitative Spectroscopy and Radiative Transfer. 2017. Vol. 202. P. 187-192 |
Popis: | A high resolution Fourier transform spectrum of mono-deuterated water vapor was studied between 11,200 and 12,400 cm−1 using a Fourier transform spectrometer with the spectral resolution of 0.05 cm−1, coupled to a multi-pass White-type cell that provided an optical path length of 24 m. A light-emitting diode was used as the radiation source to obtain a measurement signal-to-noise ratio of about 104. The rotational-vibrational assignment of more than 1560 lines was carried out using the VTT variational line list. The parameters of the spectral lines (line centers, intensities and half-widths) were determined by least-squares fitting of the Voigt contour parameters to the experimental data. A total of 584 rotational–vibrational energy levels with maximum rotational quantum numbers of J = 16 and Ka = 9 were determined. For the first time, 64 new energy levels belonging to the nine vibrational states: (032), (112), (301), (141), (410), (221), (330), (061) and (170) were derived from the experiment. |
Databáze: | OpenAIRE |
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