| Autor: |
Hjältén, Adrian, Germann, Matthias, Krzempek, Karol, Hudzikowski, Arkadiusz, Głuszek, Aleksander, Tomaszewska, Dorota, Soboń, Grzegorz, Foltynowicz, Aleksandra |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
J. Quant. Spectr. Radiat. Transf. 271, 107734 (2021) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1016/j.jqsrt.2021.107734 |
| Popis: |
We use a Fourier transform spectrometer based on a compact mid-infrared difference frequency generation comb source to perform broadband high-resolution measurements of nitrous oxide, $^{14}$N$_2$$^{16}$O, and retrieve line center frequencies of the $\nu$$_1$ fundamental band and the $\nu$$_1$ + $\nu$$_2$ - $\nu$$_2$ hot band. The spectrum spans 90 cm$^{-1}$ around 1285 cm$^{-1}$ with a sample point spacing of 3 ${\times}$ 10$^{-4}$ cm$^{-1}$ (9 MHz). We report line positions of 72 lines in the $\nu$$_1$ fundamental band between P(37) and R(38), and 112 lines in the $\nu$$_1$ + $\nu$$_2$ - $\nu$$_2$ hot band (split into two components with e/f rotationless parity) between P(34) and R(33), with uncertainties in the range of 90-600 kHz. We derive upper state constants of both bands from a fit of the effective ro-vibrational Hamiltonian to the line center positions. For the fundamental band, we observe excellent agreement in the retrieved line positions and upper state constants with those reported in a recent study by AlSaif et al. using a comb-referenced quantum cascade laser [J Quant Spectrosc Radiat Transf, 2018;211:172-178]. We determine the origin of the hot band with precision one order of magnitude better than previous work based on FTIR measurements by Toth [http://mark4sun.jpl.nasa.gov/n2o.html], which is the source of the HITRAN2016 data for these bands. |
| Databáze: |
arXiv |
| Externí odkaz: |
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