Mesure de la concentration absolue de SiO par spectroscopie d'absorption UV

Coursimault, Fabien; Motret, Olivier; Viladrosa, Raymond; Pouvesle, Jean-Michel

doi:10.1051/jp4:20030613

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…The online Hackathon days had the advantage of including co-authors who would not normally be able to participate in "in-person" "Hackathons". Coursimault et al (2003); Right display: SiO absorption spectrum computed using T = 3740 K and the Voigt line profile with using HWHM = 0.03 nm compared to the shock-tube absorption spectrum by Park & Arnold (1978).…”

Section: Discussionmentioning

confidence: 99%

“…As an illustration of of the quality of the SiO line list in the UV, we compare theoretical SiO spectra with existing experimental spectroscopic studies of SiO from this region of two prominent bands, A-X and E-X. Figure 12 compares absorption spectra from the A-X bands from two different regions, 234-236 nm and 250-290 nm to the fluorescence spectrum by Coursimault et al (2003) (Left) and shock-tube absorption spectrum by Park & Arnold (1978) (Right), respectively. To reproduce the fluorescence spectrum at the 235 nm band, a non local thermodynamic equilibrium (non-LTE) population of Trot = 1000 K and T vib = 5000 K was used.…”

Section: Line List and Simulations Of Spectra Of Siomentioning

confidence: 99%

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ExoMol line lists -- XLIV. IR and UV line list for silicon monoxide (SiO)

Yurchenko,

Tennyson,

Syme

et al. 2021

Preprint

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A new silicon monoxide ( 28 Si 16 O) line list covering infrared, visible and ultraviolet regions called SiOUVenIR is presented. This line list extends the infrared EBJT ExoMol line list by including vibronic transitions to the A 1 Π and E 1 Σ + electronic states. Strong perturbations to the A 1 Π band system are accurately modelled through the treatment of 6 dark electronic states: C 1 Σ − , D 1 ∆, a 3 Σ + , b 3 Π, e 3 Σ − and d 3 ∆. Along with the X 1 Σ + ground state, these 9 electronic states were used to build a comprehensive spectroscopic model of SiO using a combination of empirical and ab initio curves, including the potential energy (PE), spin-orbit (SO), electronic angular momentum (EAM) and (transition) dipole moment curves. The ab initio PE and coupling curves, computed at the multireference configuration interaction (MRCI) level of theory, were refined by fitting their analytical representations to 2617 experimentally derived SiO energy levels determined from 97 vibronic bands belonging to the X-X, E-X and A-X electronic systems through the MARVEL procedure. 112 observed forbidden transitions from the C-X, D-X, e-X, and d-X bands were assigned using our predictions, and these could be fed back into the MARVEL procedure. The SiOUVenIR line list was computed using published ab initio transition dipole moments for the E-X and A-X bands; the line list is suitable for temperatures up to 10 000 K and for wavelengths longer than 140 nm. SiOUVenIR is available from www.exomol.com and the CDS database.

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Section: Discussionmentioning

confidence: 99%

Section: Line List and Simulations Of Spectra Of Siomentioning

confidence: 99%

ExoMol line lists -- XLIV. IR and UV line list for silicon monoxide (SiO)

Yurchenko,

Tennyson,

Syme

et al. 2021

Preprint

View full text Add to dashboard Cite

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ExoMol line lists – XLIV. Infrared and ultraviolet line list for silicon monoxide (28Si16O)

Yurchenko

Tennyson

Syme

et al. 2021

Monthly Notices of the Royal Astronomical Society

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A new silicon monoxide (28Si16O) line list covering infrared, visible and ultraviolet regions called SiOUVenIR is presented. This line list extends the infrared EBJT ExoMol line list by including vibronic transitions to the A 1Π and E 1Σ+ electronic states. Strong perturbations to the A 1Π band system are accurately modelled through the treatment of 6 dark electronic states: C 1Σ−, D 1Δ, a 3Σ+, b 3Π, e 3Σ− and d 3Δ. Along with the X 1Σ+ ground state, these 9 electronic states were used to build a comprehensive spectroscopic model of SiO using a combination of empirical and ab initio curves, including the potential energy (PE), spin-orbit (SO), electronic angular momentum (EAM) and (transition) dipole moment curves. The ab initio PE and coupling curves, computed at the multireference configuration interaction (MRCI) level of theory, were refined by fitting their analytical representations to 2617 experimentally derived SiO energy levels determined from 97 vibronic bands belonging to the X–X, E–X and A–X electronic systems through the MARVEL procedure. 112 observed forbidden transitions from the C–X, D–X, e–X, and d–X bands were assigned using our predictions, and these could be fed back into the MARVEL procedure. The SiOUVenIR line list was computed using published ab initio transition dipole moments for the E–X and A–X bands; the line list is suitable for temperatures up to 10 000 K and for wavelengths longer than 140 nm. SiOUVenIR is available from www.exomol.com and the CDS database.

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Mesure de la concentration absolue de SiO par spectroscopie d'absorption UV

Cited by 2 publications

References 2 publications

ExoMol line lists -- XLIV. IR and UV line list for silicon monoxide (SiO)

ExoMol line lists -- XLIV. IR and UV line list for silicon monoxide (SiO)

ExoMol line lists – XLIV. Infrared and ultraviolet line list for silicon monoxide (28Si16O)

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