Self- and H2-broadened width and shift coefficients in the 2←0 band of 12C16O: revisited

Devi, V. Malathy; Predoi‐Cross, Adriana; Benner, D. Chris; Smith, Mary Ann H.; Rinsland, C. P.; Mantz, A. W.

doi:10.1016/j.jms.2004.05.006

Cited by 16 publications

(6 citation statements)

References 23 publications

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“…The H 2 -induced broadening parameters for the 2-0 band from these three studies have been depicted in Figure 10. The results of Sung & Varanasi (2004b) and Malathy Devi et al (2004) are in good agreement with each other, unlike the results from Régalia-Jarlot et al (2005). Finally, the data from Malathy Devi et al (2004) have been chosen because of the smaller uncertainties of their measurements.…”

Section: H 2 -Induced Widthsmentioning

confidence: 53%

“…The results of Sung & Varanasi (2004b) and Malathy Devi et al (2004) are in good agreement with each other, unlike the results from Régalia-Jarlot et al (2005). Finally, the data from Malathy Devi et al (2004) have been chosen because of the smaller uncertainties of their measurements. For the high-J values whose H 2 -induced widths are not measured, the available measured value for the highest-J line (J = 24) was adopted.…”

Section: H 2 -Induced Widthsmentioning

confidence: 53%

“…There are quite a few measurements of the H 2 -induced broadening and shift parameters available in the literature. It is interesting to compare three studies that have carried out measurements in the 2-0 band with a wide coverage of the rotational lines (Malathy Devi et al 2004;Régalia-Jarlot et al 2005;Sung & Varanasi 2004b). The H 2 -induced broadening parameters for the 2-0 band from these three studies have been depicted in Figure 10.…”

Section: H 2 -Induced Widthsmentioning

confidence: 99%

“…The correct interpretation of high-resolution infrared spectra of CO on Venus and Mars requires spectroscopic line parameters such as CO 2 -induced widths and shifts. To meet that requirement, the CO 2 broadening and shifts have been measured, for instance, by Sung & Varanasi (2005) for the 1-0 band at three different temperatures, 201, 244, and 300 K, and for the 2-0 and 3-0 bands at 298 K. Similarly, inspired by many applications of H 2 -dominant environments, the H 2 broadening and shift parameters for CO have also been studied (see for instance Malathy Devi et al 2004, Sung & Varanasi 2004b, Régalia-Jarlot et al 2005, Dick et al 2009, Faure et al 2013, and Padmanabhan et al 2014). Here we created semi-empirically derived algorithms to provide these line-shape parameters for every line in the new data set.…”

Section: Introductionmentioning

confidence: 99%

“…H 2 -induced line broadening for the 2-0 band of 12 C 16 O measured by three studies: MalathyDevi et al (2004),Varanasi (2004b), andRégalia-Jarlot et al (2005).…”

mentioning

confidence: 99%

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ROVIBRATIONAL LINE LISTS FOR NINE ISOTOPOLOGUES OF THE CO MOLECULE IN THE X ¹ Σ ⁺ GROUND ELECTRONIC STATE

Gordon

Rothman

et al. 2015

ApJS

400

210

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The line intensity and position calculations were carried out using a newly determined piecewise dipole moment function (DMF) in conjunction with the wavefunctions calculated from an experimentally determined potential energy function from Coxon & Hajigeorgiou. A direct-fit method that simultaneously fits all the reliable experimental rovibrational matrix elements has been used to construct the dipole moment function near equilibrium internuclear distance. In order to extend the amount and quality of input experimental parameters, new Cavity Ring Down Spectroscopy experiments were carried out to enable measurements of the lines in the 4-0 band with low uncertainty as well as the first measurements of lines in the 6-0 band. A new high-level ab initio DMF, derived from a finite field approach has been calculated to cover internuclear distances far from equilibrium. Accurate partition sums have been derived for temperatures up to 9000 K. In addition to air-and self-induced broadening and shift parameters, those induced by CO 2 and H 2 are now provided for planetary applications. A complete set of broadening and shift parameters was calculated based on sophisticated extrapolation of high-quality measured data. The line lists, which follow HITRAN formalism, are provided as supplementary material.

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Section: H 2 -Induced Widthsmentioning

confidence: 53%

Section: H 2 -Induced Widthsmentioning

confidence: 53%

Section: H 2 -Induced Widthsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…H 2 -induced line broadening for the 2-0 band of 12 C 16 O measured by three studies: MalathyDevi et al (2004),Varanasi (2004b), andRégalia-Jarlot et al (2005).…”

mentioning

confidence: 99%

See 3 more Smart Citations

ROVIBRATIONAL LINE LISTS FOR NINE ISOTOPOLOGUES OF THE CO MOLECULE IN THE X ¹ Σ ⁺ GROUND ELECTRONIC STATE

Gordon

Rothman

et al. 2015

ApJS

400

210

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High‐resolution stimulated Raman spectroscopy of low‐frequency rotational transitions: Obtention of collisional broadening coefficients in the rotational S branch of CO perturbed by H₂

Paredes‐Roibás

Martínez

2023

J Raman Spectroscopy

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We demonstrate the application of high‐resolution quasi‐continuous (q‐cw) stimulated Raman spectroscopy (SRS) to the study of low‐frequency, pure rotational transitions of molecules in diluted samples in order to obtain collisional information. The main problems encountered in the few pioneering q‐cw SRS rotational works, namely weak signals because of the small population differences between the upper and lower states of the transitions and the presence of alternating current (AC) Stark effect, have been addressed: technical improvements in the optical elements that perform the beam mixing, separation, and filtering have allowed us to use a collinear beam geometry and a triple pass configuration to enhance the Raman signals. The distortions in the line profiles caused by AC Stark effect have been measured and included in the numerical treatment of the spectra. With these extended capabilities, we have been able to register stimulated Raman transitions with wavenumbers as low as ∼ 11.5 cm−1, corresponding to the S(0) pure rotational transition of the molecule of CO. We have applied the setup to the study of collisional broadening of CO rotational lines perturbed by H2 and have obtained broadening coefficients for lines from S(0) to S(20) at 77, 180, and 298 K. A comparison between these anisotropic coefficients and those obtained from IR rovibrational experiments shows excellent agreement. This is, to our knowledge, the first demonstration of the use of rotational SRS for the obtention of collisional information in diluted gas samples.

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Fourier transform emission spectroscopy of Δv=2 sequence bands of the CO molecule in the ground electronic state

Mishra

Shetty

Kshirsagar

2005

Journal of Molecular Spectroscopy

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Self- and H2-broadened width and shift coefficients in the 2←0 band of 12C16O: revisited

Cited by 16 publications

References 23 publications

ROVIBRATIONAL LINE LISTS FOR NINE ISOTOPOLOGUES OF THE CO MOLECULE IN THE X ¹ Σ ⁺ GROUND ELECTRONIC STATE

ROVIBRATIONAL LINE LISTS FOR NINE ISOTOPOLOGUES OF THE CO MOLECULE IN THE X ¹ Σ ⁺ GROUND ELECTRONIC STATE

High‐resolution stimulated Raman spectroscopy of low‐frequency rotational transitions: Obtention of collisional broadening coefficients in the rotational S branch of CO perturbed by H₂

Fourier transform emission spectroscopy of Δv=2 sequence bands of the CO molecule in the ground electronic state

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Self- and H2-broadened width and shift coefficients in the 2←0 band of 12C16O: revisited

Cited by 16 publications

References 23 publications

ROVIBRATIONAL LINE LISTS FOR NINE ISOTOPOLOGUES OF THE CO MOLECULE IN THE X 1 Σ + GROUND ELECTRONIC STATE

ROVIBRATIONAL LINE LISTS FOR NINE ISOTOPOLOGUES OF THE CO MOLECULE IN THE X 1 Σ + GROUND ELECTRONIC STATE

High‐resolution stimulated Raman spectroscopy of low‐frequency rotational transitions: Obtention of collisional broadening coefficients in the rotational S branch of CO perturbed by H2

Fourier transform emission spectroscopy of Δv=2 sequence bands of the CO molecule in the ground electronic state

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Product

Resources

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ROVIBRATIONAL LINE LISTS FOR NINE ISOTOPOLOGUES OF THE CO MOLECULE IN THE X ¹ Σ ⁺ GROUND ELECTRONIC STATE

ROVIBRATIONAL LINE LISTS FOR NINE ISOTOPOLOGUES OF THE CO MOLECULE IN THE X ¹ Σ ⁺ GROUND ELECTRONIC STATE

High‐resolution stimulated Raman spectroscopy of low‐frequency rotational transitions: Obtention of collisional broadening coefficients in the rotational S branch of CO perturbed by H₂