MHz laser absorption spectroscopy via diplexed RF modulation for pressure, temperature, and species in rotating detonation rocket flows

AP Nair, DD Lee, DI Pineda, J Kriesel, WA Hargus Jr… - Applied Physics B, 2020 - Springer
A mid-infrared laser absorption sensing method has been developed to quantify gas
properties (temperature, pressure, and species density) at MHz measurement rates, with …

AI-3000K infrared line list for hot CO2

X Huang, RS Freedman, S Tashkun… - Journal of Molecular …, 2023 - Elsevier
AI-3000K is a semi-empirical IR line list constructed for hot CO 2 spectra analysis and
simulation up to 3000–4000 K. Compared to previously published Ames-1000K and UCL …

Spatially and temporally resolved temperature measurements in counterflow flames using a single interband cascade laser

D Wen, Y Wang - Optics Express, 2020 - opg.optica.org
Spatially and temporally resolved temperatures are measured in counterflow diffusion
flames with a tunable diode laser absorption spectroscopy (TDLAS) technique based on …

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 …

High-speed mid-infrared laser absorption spectroscopy of CO for shock-induced thermal non-equilibrium studies of planetary entry

CC Jelloian, NQ Minesi, RM Spearrin - Applied Physics B, 2022 - Springer
A high-speed laser absorption technique is employed to resolve spectral transitions of CO 2
in the mid-infrared at MHz rates to infer non-equilibrium populations/temperatures of …

Improved laser absorption spectroscopy measurements of flame temperature via a collisional line-mixing model for CO2 spectra near 4.17 µm

M Gu, S Wang, G Wang, Q Wang, X Liu, F Qi… - Applied Physics B, 2022 - Springer
An experimental and theoretical study of CO2 absorption spectroscopy near 4.172 μm was
conducted to acquire measurements of gas temperature and CO2 concentration in flames at …

Mid-infrared dual-comb spectroscopy for rapid temperature distribution characterization

X Zou, M Zhang, C Liu, Z Zuo, Y Di, S He, S Wang… - Optics Letters, 2023 - opg.optica.org
Due to the influence of chemical reactions, phase change, and other phenomena, the
combustion system is a complicated high-temperature environment. Therefore, the spatio …

Exploiting line-mixing effects for laser absorption spectroscopy at extreme combustion pressures

DD Lee, FA Bendana, AP Nair, SA Danczyk… - Proceedings of the …, 2021 - Elsevier
A unique spectroscopic strategy has been developed for laser absorption sensing of carbon
monoxide (CO) and carbon dioxide (CO 2) at extreme pressures (P> 50 atm) relevant to …

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

J Salem, R Tóbiás, AG Császár… - …, 2024 - Wiley Online Library
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 …

Temperature-dependent line mixing in the R-branch of the v3 band of methane

J Li, AP Nair, KK Schwarm, DI Pineda… - Journal of Quantitative …, 2020 - Elsevier
High-temperature line mixing behavior was studied for 15 R-branch line manifolds in the v 3
band of methane from 3.14 µm to 3.28 µm. The temperature-dependence of the line mixing …