Updated system of S I levels using Fourier transform infrared spectroscopy in the (800–11000) cm−1 range

Published

September 24, 2024

Author(s)

Alexander Kramida, S. Civiš, E. M. Zanozina, J. Kubišta, P. Kubelík, M. Ferus, V. E. Chernov

Abstract

In this study we report on high-precision laboratory measurements of transition wavenumbers for 172 atomic 10 sulfur lines in the infrared region (800–11000) cm−1using Fourier transform spectroscopy techniques. Our 11 analysis includes 96 lines that have not been previously measured in laboratory. We also correct several sulfur 12 level energy measurements reported in earlier studies. These refined measurements are important for a range of 13 scientific disciplines, such as astrophysics, atmospheric chemistry, and combustion plasma physics. From the 14 newly measured non-penetrating (high-l) Rydberg levels we also obtained the first ionization energy of S atom,15 IE = 83559.170(11) cm−1, which is more accurate than the currently recommended value, 83559.1(10) cm−1,16 by two orders of magnitude.

Citation

Astrophysical Journal Supplement Series

Volume

274

Pub Type

Journals

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Keywords

Atomic spectral lines, energy levels, ionization energy, infrared spectroscopy

Citation

Kramida, A. , Civiš, S. , Zanozina, E. , Kubišta, J. , Kubelík, P. , Ferus, M. and Chernov, V. (2024), Updated system of S I levels using Fourier transform infrared spectroscopy in the (800–11000) cm−1 range, Astrophysical Journal Supplement Series, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=957590 (Accessed October 9, 2025)