Collisional-induced broadening and shift parameters of OH with Ar and N2 near 308.6 nm, measured at T = 1300–2000 K and P = 20–100 atm

Girard, Julian J.; Choudhary, Rishav; Hanson, Ronald K.

doi:10.1016/j.jqsrt.2018.10.007

Cited by 11 publications

(2 citation statements)

References 21 publications

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“…The resulting fits provide a temperature dependence for H 2 broadening as n H2 = 0.86, and a temperature dependence for He broadening as n He = 0.42. A small number of recent broadening measurements have been made for OH broadened by different gases at high temperatures (780-2440 K; Hwang et al 2008;Girard et al 2018Girard et al , 2020. However, propagation of the uncertainty in the temperature dependence and departure from the power law over the large range of temperatures, mean that extrapolation of these values to 296 K is not recommended.…”

Section: Hydroxyl Radical (Molecule 13)mentioning

confidence: 99%

H₂, He, and CO₂ Pressure-induced Parameters for the HITRAN Database. II. Line Lists of CO₂, N₂O, CO, SO₂, OH, OCS, H₂CO, HCN, PH₃, H₂S, and GeH₄

Tan

Skinner²,

Samuels

et al. 2022

ApJS

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In recent years, extended efforts have been made to increase the potential for modeling and interpreting the spectra of planetary atmospheres using the HITRAN database. A significant objective is to provide broadening parameters due to the ambient pressure of He, H2, and CO2 gases. Since hydrogen and helium are the main constituents in the atmospheres of gas giants, and carbon dioxide dominates the atmospheres of many rocky planets, these spectroscopic data are essential for radiative transfer models dedicated to planetary atmospheres. In HITRAN2016, the He-, H2- and CO2-broadening parameters and their temperature dependencies, and in some cases pressure-induced shifts, were added to the line lists of CO, SO2, NH3, HF, HCl, OCS, and C2H2. This work describes a further expansion introduced in the HITRAN2020 edition. In particular, relevant data for the line lists of CO2, N2O, OH, H2CO, HCN, PH3, H2S, and GeH4 were added, while those for CO, SO2, and OCS were revised. The new data are based on the semiempirical models constructed on available and validated experimental measurements and theoretical predictions. These models strongly depend on the extent and quality of the available data. The paper explains how to use the online interface or the HITRAN Application Programming Interface (HAPI) to retrieve these data from the database. Examples of calculating a molecule’s spectra in a mixture of buffer-gases using HAPI are also provided. We also provide a set of Python codes allowing one to populate any line list of corresponding molecules with relevant broadening parameters.

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Section: Hydroxyl Radical (Molecule 13)mentioning

confidence: 99%

H₂, He, and CO₂ Pressure-induced Parameters for the HITRAN Database. II. Line Lists of CO₂, N₂O, CO, SO₂, OH, OCS, H₂CO, HCN, PH₃, H₂S, and GeH₄

Tan

Skinner²,

Samuels

et al. 2022

ApJS

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“…High detection-sensitivity and selectivity, a low detection-limit, fast response, and the non-invasive characteristic make tunable diode-laser absorption spectroscopy (TDLAS) a widely used technology for gas monitoring, [1][2][3] spectroscopy-parameter measurements, [4][5][6][7] and combustion diagnostics. [8][9][10][11] Direct absorption spectroscopy (DAS) and wavelength modulation spectroscopy (WMS) are the main techniques used in TDLAS measurements at laboratories and in practical measurement applications.…”

Section: Introductionmentioning

confidence: 99%

Analysis of relative wavelength response characterization and its effects on scanned-WMS gas sensing*

Zheng¹,

Peng²,

Ding³

et al. 2021

Chinese Phys. B

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Our recently proposed three-step method showed the promising potential to improve the accuracy of relative wavelength response (RWR) characterization in the wavelength-modulation spectroscopy (WMS) over the commonly used summation method. A detailed comparison of the three-step method and the summation method, for the wavelength-scanned WMS gas-sensing, was performed with different laser parameters (modulation indexes and scan indexes) and gas properties (pressures and concentrations). Simulation results show that the accuracy of the predicted gas parameters is strongly limited by the RWR characterization with large modulation index and high gas pressure conditions. Both fitting residuals of RWR and errors of predicted gas parameters from the recently proposed three-step method are nearly 2 orders of magnitude smaller than those from the summation method. In addition, the three-step method is further improved by introducing a coupling term for the 2nd harmonic amplitude. Experiments with CO2 absorption transition at 6976.2026 cm−1 were conducted and validated the simulation analysis. The modified-three-step method presents an improved accuracy in RWR description with at least 5% smaller fitting residual for all conditions compared with the three-step method, although the deviation of the deduced CO2 concentrations between these two methods does not exceed 0.2%.

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Measurement of the reaction rate of H + O2 + M → HO2 + M, for M= Ar, N2, CO2, at high temperature with a sensitive OH absorption diagnostic

Choudhary

Girard

Peng

et al. 2019

Combustion and Flame

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Collisional-induced broadening and shift parameters of OH with Ar and N2 near 308.6 nm, measured at T = 1300–2000 K and P = 20–100 atm

Cited by 11 publications

References 21 publications

H₂, He, and CO₂ Pressure-induced Parameters for the HITRAN Database. II. Line Lists of CO₂, N₂O, CO, SO₂, OH, OCS, H₂CO, HCN, PH₃, H₂S, and GeH₄

H₂, He, and CO₂ Pressure-induced Parameters for the HITRAN Database. II. Line Lists of CO₂, N₂O, CO, SO₂, OH, OCS, H₂CO, HCN, PH₃, H₂S, and GeH₄

Analysis of relative wavelength response characterization and its effects on scanned-WMS gas sensing*

Measurement of the reaction rate of H + O2 + M → HO2 + M, for M= Ar, N2, CO2, at high temperature with a sensitive OH absorption diagnostic

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Collisional-induced broadening and shift parameters of OH with Ar and N2 near 308.6 nm, measured at T = 1300–2000 K and P = 20–100 atm

Cited by 11 publications

References 21 publications

H2, He, and CO2 Pressure-induced Parameters for the HITRAN Database. II. Line Lists of CO2, N2O, CO, SO2, OH, OCS, H2CO, HCN, PH3, H2S, and GeH4

H2, He, and CO2 Pressure-induced Parameters for the HITRAN Database. II. Line Lists of CO2, N2O, CO, SO2, OH, OCS, H2CO, HCN, PH3, H2S, and GeH4

Analysis of relative wavelength response characterization and its effects on scanned-WMS gas sensing*

Measurement of the reaction rate of H + O2 + M → HO2 + M, for M= Ar, N2, CO2, at high temperature with a sensitive OH absorption diagnostic

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Product

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Collisional-induced broadening and shift parameters of OH with Ar and N2 near 308.6 nm, measured at T = 1300–2000 K and P = 20–100 atm

H₂, He, and CO₂ Pressure-induced Parameters for the HITRAN Database. II. Line Lists of CO₂, N₂O, CO, SO₂, OH, OCS, H₂CO, HCN, PH₃, H₂S, and GeH₄

H₂, He, and CO₂ Pressure-induced Parameters for the HITRAN Database. II. Line Lists of CO₂, N₂O, CO, SO₂, OH, OCS, H₂CO, HCN, PH₃, H₂S, and GeH₄

Measurement of the reaction rate of H + O2 + M → HO2 + M, for M= Ar, N2, CO2, at high temperature with a sensitive OH absorption diagnostic