High-speed laser-absorption measurements of non-equilibrium nitric oxide in the Sandia Hypersonic Shock Tunnel
This manuscript presents a quantum-cascade-laser-absorption-spectroscopy (QCLAS)
diagnostic for the partial pressure and internal temperatures (rotational and vibrational) of …
diagnostic for the partial pressure and internal temperatures (rotational and vibrational) of …
Extended tuning of distributed-feedback lasers in a bias-tee circuit via waveform optimization for MHz-rate absorption spectroscopy
Variations in injection-current waveform are examined using diplexed radio-frequency
modulation with continuous-wave distributed-feedback (CW-DFB) lasers, with the aim to …
modulation with continuous-wave distributed-feedback (CW-DFB) lasers, with the aim to …
Characterization of non-Boltzmann CN X2Σ+ behind shock waves in CH4–N2 via broadband ultraviolet femtosecond absorption spectroscopy
V Radhakrishna, RJ Tancin… - The Journal of Chemical …, 2023 - pubs.aip.org
This article describes the temporal evolution of rotationally and vibrationally non-Boltzmann
CN X 2 Σ+ formed behind reflected shock waves in N 2–CH 4 mixtures at conditions relevant …
CN X 2 Σ+ formed behind reflected shock waves in N 2–CH 4 mixtures at conditions relevant …
Multi-line Boltzmann regression for near-electronvolt temperature and CO sensing via MHz-rate infrared laser absorption spectroscopy
A mid-infrared laser absorption technique is developed for sensing of temperature and
carbon monoxide (CO) number density from 2000 K to above 9000 K. To resolve multiple …
carbon monoxide (CO) number density from 2000 K to above 9000 K. To resolve multiple …
Carbon-Monoxide Laser Absorption Spectroscopy Measurements over Ablating Graphite in a Shock Tunnel
Measurements of carbon monoxide (CO) during air–carbon ablation of graphite are
performed in the Sandia Hypersonic Shock Tunnel. Resistive heating is used to bring …
performed in the Sandia Hypersonic Shock Tunnel. Resistive heating is used to bring …
Quantum-cascade-laser-absorption-spectroscopy diagnostic for temperature, pressure, and NO X 2 Π 1/2 at 500 kHz in shock-heated air at elevated pressures
The design, validation, and application of a quantum-cascade-laser-absorption-
spectroscopy diagnostic for measuring gas temperature, pressure, and nitric oxide (NO) in …
spectroscopy diagnostic for measuring gas temperature, pressure, and nitric oxide (NO) in …
Experimental and numerical studies on the thermal nonequilibrium behaviors of CO with Ar, He, and H2
The time-dependent rotational and vibrational temperatures were measured to study the
shock-heated thermal nonequilibrium behaviors of CO with Ar, He, and H 2 as collision …
shock-heated thermal nonequilibrium behaviors of CO with Ar, He, and H 2 as collision …
Optical pressure sensing at MHz rates via collisional line broadening of carbon monoxide: uncertainty quantification in reacting flows
An optical method for high-speed line-of-sight pressure measurements using infrared laser
absorption spectroscopy is presented with detailed uncertainty analysis related to …
absorption spectroscopy is presented with detailed uncertainty analysis related to …
High-speed mid-infrared laser absorption spectroscopy of CO for shock-induced thermal non-equilibrium studies of planetary entry
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 …
in the mid-infrared at MHz rates to infer non-equilibrium populations/temperatures of …
Development of interference-free rotational and vibrational thermometry for studies on shock-heated thermochemical non-equilibrium CO
A mid-infrared interference-free laser absorption technique for simultaneously measuring
rotational temperature, vibrational temperature, and CO concentration was developed for …
rotational temperature, vibrational temperature, and CO concentration was developed for …