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\documentclass[11pt]{article}

\usepackage{hrms}  %% Page settings, style ... for the HRMS abstract book.

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\title{LINE SHAPE PARAMETERS FOR N$_2$O DILUTED IN N$_2$ MEASURED BY MID-INFRARED DUAL-COMB SPECTROSCOPY}

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\author{\underline{\FirstName B. \LastName VISPOEL},
  \FirstName J. \LastName CL\'{E}MENT,
  \FirstName M. \LastName LEP\`{E}RE
}
\address{Research unit Lasers and Spectroscopies (LLS), Institute of Life, Earth and Environment (ILEE), University of Namur, 61, Rue de Bruxelles, Namur, Belgium}

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%\author{\underline{\FirstName G. \LastName HHHHH-IIIIIII Jr},
  %\FirstName J. \LastName KKKKKKKKKK,
  %\underline{\FirstName L. \LastName MM NN PPPPPP}}
%\address{Address of the institution for the second author(s)}

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\usepackage{fancyhdr}
\pagestyle{fancy}
\fancyhead[C]{{\footnotesize \textit{HRMS, 28th Colloquium, Dijon, France,
  Aug. 28 - Sept. 1, 2023}}}
\fancyfoot[C]{}
\renewcommand{\headrulewidth}{0.6pt}
\renewcommand{\footrulewidth}{0.6pt}

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\usepackage[colorlinks=true,urlcolor=blue,linkcolor=blue,citecolor=blue]{hyperref}
\voffset -.65 cm

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\category {3,9}
\begin{document}

\maketitle  %% This will also build the list of author(s) and addresse(s).

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\index{Nitrous oxide}
\index{Mid-Infrared}
\index{Line shape}
\index{Collisional broadening}
\index{Dual-Comb Spectroscopy}

%% Place the body of your abstract below.
Nitrous oxide is an important trace gas natrually present in Earth's atmosphere but also results of human activities\footnote{
\href{http://dx.doi.org/10.1126/science.1179571}{doi:10.1126/science.1179571}
D.J. Wuebbles, "Nitrous Oxide: No Laughing Matter", Science, \textbf{326}(5949), 56--57 (2009)
}. It has an important role in atmospheric chemistry and in radiative transfer. N$_2$O is a strong greenhouse gas with a global warming potential 300 times higher than carbon dioxide\footnote{
\href{https://www.ipcc.ch/site/assets/uploads/2018/02/ar4-wg1-chapter2-1.pdf}{IPCC-Chapter 2}
P. Forster \textit{et al.}, "Changes in Atmospheric Constituents and in Radiative Forcing" Chapter 2, Climate Change 2007 - The Physical Sciences Basis, \textit{Cambridge University Press}, 131--217 (2007)
}, and contributes to the depletion of stratospheric ozone\footnote{
\href{http://dx.doi.org/10.1126/science.1176985}{doi:10.1126/science.1176985}
A.R. Ravishankara \textit{et al.}, "Nitrous Oxide (N$_2$O): The Dominant Ozone-Depleting Substance Emitted in the 21st Century", Science, \textbf{326}, 123--125 (2009)
}. The monitoring of its concentration requires accurate knowledge of N$_2$O spectroscopic parameters for line shape parameters can be a limiting factor of the precision of atmospheric spectrum analysis. In addition, a limited number of accurate experimental line shape parameters are needed to determine and validate intermolecular potentials used in the state-of-the-art models allowing the calculations of these parameters.

In this preliminary work, the measurements were performed using a mid-infrared high-resolution dual comb spectrometer that is based on quantum cascade lasers. It was shown that this spectrometer is well suited for line shape parameter studies\footnote{
\href{http://dx.doi.org/10.1016/j.jqsrt.2022.108239}{doi:10.1016/j.jqsrt.2022.108239}
M. Lep\`{e}re \textit{et al.}, "A mid-infrared dual comb spectrometer in step-sweep mode for high-resolution molecular spectroscopy", Journal of Quantitative Spectroscopy and Radiative Transfer, \textbf{287}, 108239 (2022)
}. The N$_2$O-N$_2$ spectra were recorded at room temperature in the 1300 cm$^{-1}$ wavenumber region. The line shape parameters were determined by adjusting the Voigt and Speed-Dependent Voigt theoretical models on the experimental line profiles using a multi-spectrum fitting technique. The obtained results are discussed and compared to literature.

\vfill

Acknowledgements: The authors thank the IRsweep company for the support during the measurements performed with the dual comb spectrometer.




%\footnote{
%\href{http://dx.doi.org/10.1029/2009JD012968}{doi:10.1029/2009JD012968}
%J.S. Delamere \textit{et al.}, "A far-infrared radiative closure study in the Arctic: Application to water vapor", Journal of Quantitative Spectroscopy and Radiative Transfer, \textbf{213}, 178--227 (2018)
%}

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