Direct frequency comb spectroscopy of HCN to evaluate line lists.

Autor: Bailey DM; Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA. adam.fleisher@nist.gov., Crump EM; Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA. adam.fleisher@nist.gov.; Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA., Hodges JT; Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA. adam.fleisher@nist.gov., Fleisher AJ; Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA. adam.fleisher@nist.gov.
Jazyk: angličtina
Zdroj: Faraday discussions [Faraday Discuss] 2023 Sep 20; Vol. 245 (0), pp. 368-379. Date of Electronic Publication: 2023 Sep 20.
DOI: 10.1039/d3fd00019b
Abstrakt: We report direct frequency comb spectroscopy of the 2 ν 1 band of H 13 CN in the short-wave infrared ( λ = 1.56 μm) towards experimental validation of molecular line lists that support observatories like JWST. The laboratory measurements aim to test spectral reference data generated from an experimentally accurate potential energy surface (PES) and an ab initio dipole moment surface (DMS) calculated from quantum chemistry theory. Benchmarking theory with experiment will improve confidence in new astrophysics and astrochemistry inferred from spectroscopic observations of HCN and HNC. Here we describe our instrumentation and initial results using a cross-dispersed spectrometer with a virtually imaged phased array (VIPA).
Databáze: MEDLINE
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