Infrared spectroscopy of radioactive hydrogen chloride H36Cl

Santeri Larnimaa, Markku Vainio, Ville Ulvila

Research output: Contribution to journalArticleScientificpeer-review

Abstract

We present the first report of optical absorption spectroscopy of H36Cl, a radioactive isotopologue of hydrogen chloride. We used Fourier-transform infrared spectroscopy to determine the line center wavenumbers of the fundamental rovibrational band lines P(10)–R(10) and the first overtone band lines P(1)–R(7) with total uncertainty of less than 0.0018 cm−1 (60 MHz) and 0.007 cm−1 (0.2 GHz), respectively, at 68% confidence level. We also performed a rotational analysis on the bands to determine the related molecular constants. We further compared the linewidths and relative intensities of the lines to those of the stable isotopologues H35Cl and H37Cl. The new spectroscopic information assists in developing optical instrumentation for the detection of H36Cl.

Original languageEnglish
Article number107984
JournalJOURNAL OF QUANTITATIVE SPECTROSCOPY AND RADIATIVE TRANSFER
Volume277
Early online date29 Oct 2021
DOIs
Publication statusPublished - Jan 2022
Publication typeA1 Journal article-refereed

Keywords

  • Fourier-transform infrared spectroscopy FTIR
  • Line center wavenumber
  • Molecular constant
  • Radioactive hydrogen chloride HCl
  • Rotational-vibrational spectroscopy

Publication forum classification

  • Publication forum level 1

ASJC Scopus subject areas

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

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