LED-based Fourier transform spectroscopy of H2 18O in the 15,000-16,000cm-1 range

S. N. Mikhailenko, V. I. Serdyukov, L. N. Sinitsa

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Abstract

The spectrum of n{cyrillic}2 18O{cyrillic} has been recorded between 15,000 and 16,000cm-1 by a Fourier transform spectrometer with spectral resolutions of 0.03cm-1 and 0.05cm-1 using high luminance LED light sources and a 60-cm multipath cell with a path length of 1920 and 3480cm. A high signal-to-noise ratio (S/N=10,000) enabled us to register more than 1500 water vapor lines with intensities 1.0×10-27 to 2.2×10-24cm/molecule at 296K. 426 rotational-vibrational levels of the H2 18O molecule were assigned to eleven vibrational states: (014), (033), (052), (113), (132), (151), (212), (231), (311), (330) and (410). 72 Rotational-vibrational levels of the H2 17O molecule were assigned to six vibrational states: (014), (033), (113), (212), (311) and (410). An extended set of H2 18O transitions in the 15,000-16,000cm-1 range was generated using the obtained energy level list and the results of a variational intensity calculation.

Original languageEnglish
Pages (from-to)36-46
Number of pages11
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume156
DOIs
Publication statusPublished - 1 Mar 2015

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Keywords

  • Absorption of H O
  • Fourier transform spectroscopy
  • Water isotopoloque

ASJC Scopus subject areas

  • Spectroscopy
  • Atomic and Molecular Physics, and Optics
  • Radiation

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