Helium- and argon-broadening coefficients of phosphine lines in the ν2 and ν4 bands

Salem, Jamel; Bouanich, Jean-Pierre; Walrand, Jacques; Aroui, H.; Blanquet, Ghislain

doi:10.1016/j.jms.2005.04.014

Cited by 26 publications

(33 citation statements)

References 27 publications

(38 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The extensive broadening measurements of the dyad region by Salem et al [10,[28][29][30][31] satisfy many of the current requirements for planetary remote sensing. With a goal of a complete database of phosphine, other studies outside of the scope of this work, such as air-broadened PH 3 coefficients, are necessary for terrestrial applications.…”

Section: Resultsmentioning

confidence: 99%

“…If assigned, the quantum numbers are listed. For the HITRAN 2000 format, the vibrational identification numbers were set to 1,2,14,18,31,32,35,38,40,42,44, and 30, respectively for ground, m 2 , 3m 2 , 2m 2 + m 4 , m 2 + 2m 4 l = 0, m 2 + 2m 4 jlj = 2, m 1 + m 2 , m 2 + m 3 , m 1 + m 4 , m 3 + m 4 l = 0, m 3 + m 4 jlj = 2, and 4m 2 . If a position was assigned to two transitions, the position was listed twice, and the total intensity was split between the two assignments as a very crude estimate of the individual intensities.…”

Section: Database Of Ph 3 Line Parametersmentioning

confidence: 99%

“…The temperature dependence of the widths were computed with the expression 0.702 -0.1 · J 00 (lower state J) obtained by Salem et al [30]. Calculations from the studies of self-and He-widths [10,31] were not readily available. However, inspection of the recent laboratory studies revealed that self-broadened widths [10] were approximately 6% higher than the corresponding H 2 -broadened widths [29] and so the self-broadened widths in the database were set to be the H 2 -broadening widths scaled by 1.06.…”

Section: Database Of Ph 3 Line Parametersmentioning

confidence: 99%

“…Since the ratio of He-broadened to H 2 -broadened widths [31,29] was 0.523 ± 2.3%, the foreign-broadened widths of the 2nd version were computed to be 0.9356 H 2 -width = (0.865 H 2 -width + 0.135 · 0.523 H 2 -width). We note that this choice is also valid for the atmosphere of Saturn [33], whereas the version of the database with N 2 -broadened PH 3 is suited for studies of Saturn's moon Titan.…”

Section: Database Of Ph 3 Line Parametersmentioning

confidence: 99%

See 3 more Smart Citations

The absorption spectrum of phosphine (PH3) between 2.8 and 3.7μm: Line positions, intensities, and assignments

Butler

Sagui

Kleiner

et al. 2006

Journal of Molecular Spectroscopy

View full text Add to dashboard Cite

Section: Resultsmentioning

confidence: 99%

Section: Database Of Ph 3 Line Parametersmentioning

confidence: 99%

Section: Database Of Ph 3 Line Parametersmentioning

confidence: 99%

Section: Database Of Ph 3 Line Parametersmentioning

confidence: 99%

See 2 more Smart Citations

The absorption spectrum of phosphine (PH3) between 2.8 and 3.7μm: Line positions, intensities, and assignments

Butler

Sagui

Kleiner

et al. 2006

Journal of Molecular Spectroscopy

View full text Add to dashboard Cite

“…The collisional broadening of PH 3 spectral lines by N 2 , H 2 , PH 3 , He and Ar in the parallel ν 2 and bending ν 4 bands (near 1000-1100 cm −1 ) was studied in Refs [102][103][104][105][106][107][108] (the case of hydrogen-broadening [105,106] is of particular interest for the atmospheres of the giant planets).…”

Section: Ph 3 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

View full text Add to dashboard Cite

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.

show abstract

Temperature‐Dependent Line‐Broadening Effects in CO₂ Caused by Ar

Salem,

Tóbiás,

Császár

et al. 2023

ChemPhysChem

Self Cite

View full text Add to dashboard Cite

This computational study of line‐broadening effects is based on an accurate, analytical representation of the intermonomer potential energy surface (PES) of the CO2•Ar van der Waals (vdW) complex. The PES is employed to compute collisional broadening coefficients for rovibrational lines of CO2 perturbed by Ar. The semiclassical computations are performed within the modified Robert–Bonamy approach, including real and imaginary terms, and the exact trajectory model. The lines investigated are in the 10001←00011, 01101←00001, 00011←00001, and 00031←00001 vibrational bands and the computations are repeated at multiple temperatures. The computed results are in good agreement with the available experimental values, validating both the intermonomer PES developed and the methodology used. For lines in the 01101←00001 band of CO2 temperature‐dependent Ar‐broadening coefficients are reported for the first time. The parameters presented should prove useful, among other applications, for the accurate experimental determination of CO2 and Ar abundances in planetary atmospheres.

show abstract

Helium- and argon-broadening coefficients of phosphine lines in the ν2 and ν4 bands

Cited by 26 publications

References 27 publications

The absorption spectrum of phosphine (PH3) between 2.8 and 3.7μm: Line positions, intensities, and assignments

The absorption spectrum of phosphine (PH3) between 2.8 and 3.7μm: Line positions, intensities, and assignments

Pressure broadening and shifting of vibrotational lines of atmospheric gases

Temperature‐Dependent Line‐Broadening Effects in CO₂ Caused by Ar

Contact Info

Product

Resources

About

Helium- and argon-broadening coefficients of phosphine lines in the ν2 and ν4 bands

Cited by 26 publications

References 27 publications

The absorption spectrum of phosphine (PH3) between 2.8 and 3.7μm: Line positions, intensities, and assignments

The absorption spectrum of phosphine (PH3) between 2.8 and 3.7μm: Line positions, intensities, and assignments

Pressure broadening and shifting of vibrotational lines of atmospheric gases

Temperature‐Dependent Line‐Broadening Effects in CO2 Caused by Ar

Contact Info

Product

Resources

About

Temperature‐Dependent Line‐Broadening Effects in CO₂ Caused by Ar