Civiš, Svatopluk;
Pastorek, Adam;
Yurchenko, Sergei N;
(2023)
The Problem of CO2 Reabsorption in Emission Spectra.
Earth and Planetary Science
, 2
(1)
pp. 49-54.
10.36956/eps.v2i1.836.
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Abstract
The authors present a detailed explanation for selective reabsorption by the CO2 ν3-band when passing its optical emission through an atmospheric-pressure air column (60 cm long, 410 ppm CO2) connecting a microwave-discharge cell and the entrance window of a high-resolution Fourier Transform spectrometer. The CO2 band shapes are explained with a two-temperature model of emission and foreground absorption. Selective CO2 atmospheric reabsorption is a common effect in optical emission measurements. It primarily affects the fundamental infrared bands, which comprise the main part of the missing laboratory emission and must be taken into account in (exo)planetary atmospheric models.
| Type: | Article |
|---|---|
| Title: | The Problem of CO2 Reabsorption in Emission Spectra |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.36956/eps.v2i1.836 |
| Publisher version: | http://doi.org/10.36956/eps.v2i1.836 |
| Language: | English |
| Additional information: | Copyright © 2023 Author(s). Published by Nan Yang Academy of Sciences Pte. Ltd. This is an open access article under the Creative Commons Attribution 4.0 International License. |
| Keywords: | Reabsorption, Carbon dioxide, FTIR spectroscopy, Vacuum vs air measurement |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10170938 |
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