Self-, N2- and O2-broadening coefficients for the 12C16O2 transitions near-IR measured by a diode laser photoacoustic spectrometer

Li, J.S.; Liu, K.; Zhang, W.J.; Chen, W.D.; Gao, Xiaoming

doi:10.1016/j.jms.2008.03.018

Cited by 19 publications

(3 citation statements)

References 30 publications

(67 reference statements)

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“…Its line-broadening coefficients in mixtures with various gases were extensively studied [151][152][153][154][155][156][157][158][159] both experimentally and theoretically (see Refs [160][161][162][163][164][165][166][167][168] for recent measurements). Systematic computations of these coefficients for infrared absorption and Raman scattering spectra of 12 C 16 O 2 -CO 2 (H 2 O, N 2 , O 2 ) in the 300-2400 K temperature range were made by Rosenmann et al [151] in the framework of the semi-classical RB formalism (Table 4.38).…”

Section: Co 2 Moleculementioning

confidence: 99%

Pressure broadening and shifting of vibrotational lines of atmospheric gases

Buldyreva¹,

Lavrentieva²,

Starikov³

2010

Collisional Line Broadening and Shifting of Atmospheric Gases

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Water vapour is one of the strongest absorbers of radiation in the Earth's atmosphere, but some other gases also play an important role in the atmospheric radiative transfer processes: carbon dioxide CO 2 , carbon monoxide CO, ozone О 3 , methane CH 4 . Minor atmospheric pollutants such as hydrogen sulphide H 2 S, methyl fluoride CH 3 F, methyl chloride CH 3 Cl, ethylene C 2 H 4 , nitric oxide NO, nitrous oxide N 2 O and nitrogen dioxide NO 2 are equally recognised for their implication in the fundamental chemical reactions occurring in the terrestrial atmosphere. As a consequence, a lot of spectroscopic studies are made for these molecules in order to obtain the line positions, intensities and widths. They are briefly summarised below, starting by asymmetric waterlike molecules of X 2 Y-type which have the same selection rules for vibrotational spectra. Vibrotational lines of asymmetric X 2 Y moleculesBetween asymmetric tops of the X 2 Y type most attention in the spectroscopic literature is paid to the H 2 S, SO 2 , O 3 and NO 2 molecules. _________________________________________________________________ A vibrotational state (v 1 v 2 v 3 ) [J K a K c ] of these molecules is characterised by three vibrational quantum numbers v 1 , v 2 , v 3 and three rotational quantum numbers J, K a , K c . In the NO 2 molecule, having an unpaired electron (total electronic spin S = 1/2), each vibrotational level is split by the spin-rotational interaction into two components (J = N ± S) denoted by + or -, and the three rotational quantum numbers are N, K a , K c . For a given set of vibrotational quantum numbers the corresponding energies are obtained by a diagonalization of the effective Hamiltonian matrix of Eq. (3.

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Section: Co 2 Moleculementioning

confidence: 99%

Pressure broadening and shifting of vibrotational lines of atmospheric gases

Buldyreva¹,

Lavrentieva²,

Starikov³

2010

Collisional Line Broadening and Shifting of Atmospheric Gases

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“…Therefore, the line parameters of water vapor, such as line positions, 5–9 line intensities, 6–13 and broadening coefficients, 5–7,9,11 have been extensively studied experimentally. Researchers have relied mainly on the methods such as Fourier transform spectroscopy (FTS), 5 direct absorption spectroscopy (DAS), 14 cavity ring down absorption spectroscopy (CRDS) 15 to carry out their study while photoacoustic spectroscopy (PAS) is limited by its principle 16–19 and mainly used for the measurement of spectral parameters such as broadening coefficients and line positions 20 . In fact, almost all of these experiments have been based on FTS.…”

Section: Introductionmentioning

confidence: 99%

“…Researchers have relied mainly on the methods such as Fourier transform spectroscopy (FTS), 5 direct absorption spectroscopy (DAS), 14 cavity ring down absorption spectroscopy (CRDS) 15 to carry out their study while photoacoustic spectroscopy (PAS) is limited by its principle [16][17][18][19] and mainly used for the measurement of spectral parameters such as broadening coefficients and line positions. 20 In fact, almost all of these experiments have been based on FTS. The resolution of the FTS used in these experiments is generally on the magnitude order of 0.07-0.0017 cm −1 .…”

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confidence: 99%

Study of water vapor line parameters in the region around 1.1 µm by tunable diode laser spectroscopy

Zheng

Liu

et al. 2022

Micro & Optical Tech Letters

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To analyze the absolute line intensities, as well as the coefficients of air-and selfbroadening of water vapor, 31 transition lines were measured using an externalcavity diode laser (ECDL) in the range of 9090-9750 cm −1 . A multispectrum fitting (MSF) program was used in conjunction with a quadratic speed-dependent Voigt profile (qSDVP) and a Voigt profile (VP) to extract the line intensities and self-and air-broadening coefficients. Values at room temperature (296 K) were then compared with the HITRAN2016 and HITRAN2020 database. The analysis results show that the line intensities and air-broadening coefficients are more consistent with the database while also verifying that the self-broadening coefficients obtained based on qSDVP are larger than those based on VP.

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Near infrared diode laser spectroscopy of C2H2, H2O, CO2 and their isotopologues and the application to TDLAS, a tunable diode laser spectrometer for the martian PHOBOS-GRUNT space mission

Durry

Vinogradov

et al. 2010

Appl. Phys. B

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Self-, N2- and O2-broadening coefficients for the 12C16O2 transitions near-IR measured by a diode laser photoacoustic spectrometer

Cited by 19 publications

References 30 publications

Pressure broadening and shifting of vibrotational lines of atmospheric gases

Pressure broadening and shifting of vibrotational lines of atmospheric gases

Study of water vapor line parameters in the region around 1.1 µm by tunable diode laser spectroscopy

Near infrared diode laser spectroscopy of C2H2, H2O, CO2 and their isotopologues and the application to TDLAS, a tunable diode laser spectrometer for the martian PHOBOS-GRUNT space mission

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