Direct frequency comb spectroscopy of HCN to evaluate line lists

D. Michelle Bailey; Eric M. Crump; Joseph T. Hodges; Adam J. Fleisher

doi:10.1039/D3FD00019B

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Direct frequency comb spectroscopy of HCN to evaluate line lists

D. Michelle Bailey,

^a Eric M. Crump,

^ab Joseph T. Hodges

^a and Adam J. Fleisher

*^a

Author affiliations

* Corresponding authors

^a Material Measurement Laboratory, National Institute of Standards and Technology, Gaithersburg, MD 20899, USA
E-mail: adam.fleisher@nist.gov

^b Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA

Abstract

We report direct frequency comb spectroscopy of the 2ν₁ band of H¹³CN 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).

This article is part of the themed collection: Astrochemistry at high resolution

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Laboratory astrochemistry of the gas phase: general discussion

Article information

DOI: https://doi.org/10.1039/D3FD00019B
Article type: Paper
Submitted: 30 Jan 2023
Accepted: 14 Feb 2023
First published: 12 Jun 2023

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Faraday Discuss., 2023,245, 368-379

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Direct frequency comb spectroscopy of HCN to evaluate line lists

D. M. Bailey, Eric M. Crump, J. T. Hodges and A. J. Fleisher, Faraday Discuss., 2023, 245, 368 DOI: 10.1039/D3FD00019B

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Faraday Discussions

Direct frequency comb spectroscopy of HCN to evaluate line lists

Abstract

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Direct frequency comb spectroscopy of HCN to evaluate line lists

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