LED-based fourier-transform spectroscopy of H2 18O in the range 15000-15700 cm-1

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

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The spectrum of H2 18O in the range 15000-15700 cm-1 has been recorded for the first time on a Fourier-transform spectrometer using a high-brightness light-emitting diode as a radiation source. The measurements have been conducted at room temperature with a resolution of 0.05 cm-1. A threshold sensitivity in absorption of 2 × 10 -7 cm-1 has been achieved due to both the use of a light-emitting diode and optimization of the multipass cell with a base length of 60 cm, which ensured a 19.2-m length of the absorbing layer. A high signal-to-noise ratio (S/N = 2000-10000) made it possible to record about 670 water-vapor lines with intensities of 1.0 × 10-26-2.2 × 10-24 cm/mol at 296 K. The energies of 265 vibrational-rotational levels of the H2 18O molecule are determined and attributed to seven vibrational states, namely, (033), (113), (212), (231), (311), (330), and (410).

Original languageEnglish
Pages (from-to)814-822
Number of pages9
JournalOptics and Spectroscopy (English translation of Optika i Spektroskopiya)
Volume115
Issue number6
DOIs
Publication statusPublished - Dec 2013

Fingerprint

Light emitting diodes
Fourier transforms
light emitting diodes
Spectroscopy
Steam
radiation sources
vibrational states
Water vapor
spectroscopy
water vapor
Spectrometers
Luminance
Signal to noise ratio
brightness
signal to noise ratios
spectrometers
Radiation
Molecules
optimization
thresholds

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics

Cite this

LED-based fourier-transform spectroscopy of H2 18O in the range 15000-15700 cm-1. / Mikhailenko, S. N.; Serdyukov, V. I.; Sinitsa, L. N.; Vasilchenko, S. S.

In: Optics and Spectroscopy (English translation of Optika i Spektroskopiya), Vol. 115, No. 6, 12.2013, p. 814-822.

Research output: Contribution to journalArticle

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