TY - JOUR
T1 - Infrared spectroscopy of radioactive hydrogen chloride H36Cl
AU - Larnimaa, Santeri
AU - Vainio, Markku
AU - Ulvila, Ville
N1 - Funding Information:
This work obtained funding from the Euratom research and training programme 2014–2018 [Grant agreement No. 755371, the CHANCE project]; the Academy of Finland [Project No. 326444]; and the Flagship on Photonics Research and Innovation of the Academy of Finland (PREIN). S. Larnimaa acknowledges financial support from the CHEMS doctoral program of the University of Helsinki.
Publisher Copyright:
© 2021 The Authors
PY - 2022/1
Y1 - 2022/1
N2 - 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.
AB - 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.
KW - Fourier-transform infrared spectroscopy FTIR
KW - Line center wavenumber
KW - Molecular constant
KW - Radioactive hydrogen chloride HCl
KW - Rotational-vibrational spectroscopy
UR - http://www.scopus.com/inward/record.url?scp=85118535253&partnerID=8YFLogxK
U2 - 10.1016/j.jqsrt.2021.107984
DO - 10.1016/j.jqsrt.2021.107984
M3 - Article
AN - SCOPUS:85118535253
VL - 277
JO - Journal of Quantitative Spectroscopy and Radiative Transfer
JF - Journal of Quantitative Spectroscopy and Radiative Transfer
SN - 0022-4073
M1 - 107984
ER -