Temperature dependence of line shape parameters for N2-and O2-broadened methane lines by quantum cascade laser spectroscopy

B Vispoel, T Roland, O Browet, M Lepère - Journal of Quantitative …, 2024 - Elsevier
This paper report nitrogen-and oxygen-broadening coefficients, their speed-dependencies,
and the collisional narrowing parameters of lines in the ν 4-band of methane. The …

Temperature-dependent CO2 line mixing models using dual frequency comb absorption and phase spectroscopy up to 25 bar and 1000 K

RK Cole, H Tran, N Hoghooghi, GB Rieker - Journal of Quantitative …, 2023 - Elsevier
We perform dual frequency comb laser absorption spectroscopy of CO 2 at high pressure
and temperature, and use the spectra to test and improve CO 2 line mixing models and their …

[HTML][HTML] Transient analysis of solar pyrolysis and hydrogen yield via interband cascade laser absorption spectroscopy of methane, acetylene, ethylene, and ethane

B Jeevaretanam, M Abuseada, C Wei… - Applications in Energy …, 2023 - Elsevier
A mid-infrared laser absorption sensing method has been developed to measure species
concentrations of four hydrocarbons and gas temperature over a range of temperatures in …

Mid-infrared virtually imaged phased array spectrometer with optical frequency comb: fast thermometry over large dynamic range

N Zhu, Z Song, W Wang, X Chen… - … Science and Technology, 2023 - iopscience.iop.org
We demonstrate a broadband mid-infrared frequency comb spectrometer utilizing virtually
imaged phased array (VIPA) with the potential of quantitative, fast thermometry over large …

Simultaneous measurements of SO2 and SO3 in the heterogeneous conversions of SO2 using QCL absorption spectroscopy

J Li, Y Ding, Z Li, Z Peng - Applied Physics B, 2022 - Springer
An optical sensor was developed for simultaneous detection of sulfur dioxide (SO2) and
sulfur trioxide (SO3) at elevated temperatures using a quantum cascade laser (QCL) …

Robust cepstral analysis at variable wavelength scan depth for narrowband tunable laser absorption spectroscopy

J Li, KK Schwarm, C Wei… - … Science and Technology, 2021 - iopscience.iop.org
This work focuses on optimizing the modified free induction decay (m-FID) method, or
cepstral analysis, for accuracy, precision, and robustness in performing laser absorption …

Quantitative volumetric laser absorption imaging of methane and temperature in flames utilizing line-mixing effects

C Wei, KK Schwarm, DI Pineda, RM Spearrin - Proceedings of the …, 2023 - Elsevier
A mid-infrared volumetric laser absorption imaging technique was developed for quantitative
three-dimensional measurements of methane concentration and temperature in combustion …

Experimental and simulated study of line-shape models for measuring spectroscopic parameters using the WM-DAS method—Part II: Broadening and narrowing of …

J Li, Y Du, Y Ding, Z Peng - Journal of Quantitative Spectroscopy and …, 2021 - Elsevier
Wavelength modulation-direct absorption spectroscopy (WM-DAS) has been used to
measure the absorption line shapes of the H 2 O transition at 7299.431 cm− 1 and the CO …

Air-induced collisional parameters in the ν3 band of methane

A Farji, H Aroui, J Vander Auwera - Journal of Quantitative Spectroscopy …, 2021 - Elsevier
Air broadening and shift coefficients together with narrowing and first order line mixing
parameters were measured for 166 lines belonging to J ″manifolds of the P (J ″= 2− 11), Q …

Quantum cascade laser measurements of CH4 linestrength and temperature-dependent self-broadening and narrowing parameters at 7.16 µm

J Li, Y Ding, Z Li, Z Peng - Journal of Quantitative Spectroscopy and …, 2021 - Elsevier
Absorption lineshapes for 10 CH 4 transitions in the v 2 and v 4 band were measured at high-
resolution in a thermodynamically-controlled optical cell using a quantum cascade laser …