The 1943 K emission spectrum of H2 16O between 6600 and 7050 cm−1

Eszter Czinki, T. Furtenbacher, A. Császár, André K. Eckhardt, Georg Ch Mellau

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

An emission spectrum of H2 16O has been recorded, with Doppler-limited resolution, at 1943 K using Hot Gas Molecular Emission (HOTGAME) spectroscopy. The wavenumber range covered is 6600 to 7050 cm−1. This work reports the analysis and subsequent assignment of close to 3700 H2 16O transitions out of a total of more than 6700 measured peaks. The analysis is based on the Measured Active Rotational-Vibrational Energy Levels (MARVEL) energy levels of H2 16O determined in 2013 and emission line intensities obtained from accurate variational nuclear-motion computations. The analysis of the spectrum yields about 1300 transitions not measured previously and 23 experimentally previously unidentified rovibrational energy levels. The accuracy of the line positions and intensities used in the analysis was improved with the spectrum deconvolution software SyMath via creating a peak list corresponding to the dense emission spectrum. The extensive list of labeled transitions and the new experimental energy levels obtained are deposited in the Supplementary Material of this article as well as in the ReSpecTh (http://www.respecth.hu) information system.

Original languageEnglish
Pages (from-to)46-54
Number of pages9
JournalJournal of Quantitative Spectroscopy and Radiative Transfer
Volume206
DOIs
Publication statusPublished - Feb 1 2018

Keywords

  • Energy levels
  • High-resolution emission spectroscopy
  • Infrared spectra
  • MARVEL
  • Spectroscopic database
  • SyMath
  • Transition wavenumbers
  • Water vapor

ASJC Scopus subject areas

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

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