Articles with "laser absorption" as a keyword



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DMMP pyrolysis and oxidation studies at high temperature inside a shock tube using laser absorption measurements of CO

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Published in 2020 at "Combustion and Flame"

DOI: 10.1016/j.combustflame.2019.12.014

Abstract: Abstract Dimethyl methyl phosphonate (DMMP) is an organo-phosphorous compound (OPC) used as a fire suppressant and a simulant for sarin, a chemical warfare agent. There exists a critical need to gather combustion data at high… read more here.

Keywords: pyrolysis oxidation; laser absorption; dmmp pyrolysis; oxidation ... See more keywords
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Competitive oxidation of methane and C2 hydrocarbons discerned by isotopic labeling and laser absorption spectroscopy of CO isotopologues in shock-heated mixtures

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Published in 2020 at "Combustion and Flame"

DOI: 10.1016/j.combustflame.2020.11.006

Abstract: Abstract The competitive oxidation of methane with C 2 hydrocarbons of differing functional groups (alkane, alkene, and alkyne) was examined experimentally via combustion of isotopically-labeled fuel mixtures and laser absorption spectroscopy of carbon monoxide isotopologues.… read more here.

Keywords: oxidation; methane; laser absorption; fuel ... See more keywords
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Re-investigation of the (3, 0) band in the b 4 Σ − - a 4 Π system for nitric oxide by laser absorption spectroscopy

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Published in 2017 at "Journal of Molecular Spectroscopy"

DOI: 10.1016/j.jms.2017.12.006

Abstract: Abstract Nitric oxide (NO) radicals in the a4Π state were produced by discharging the mixture of NO gas and helium at the audio frequency. In the near infrared region, the spectra of the b4Σ− -… read more here.

Keywords: system; laser absorption; spectroscopy; absorption spectroscopy ... See more keywords
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Buffer-gas pressure broadening at high J values in the ν3 band of CO2 measured with tunable diode laser absorption spectroscopy

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Published in 2021 at "Journal of Molecular Spectroscopy"

DOI: 10.1016/j.jms.2021.111429

Abstract: Abstract Pressure broadening coefficients of CO2 perturbed by buffer gases (N2, O2, He, and Ar) were studied for four absorption lines R(62), R(64), R(66) and R(68) belonging to the ν3 band in the 4.2 μm… read more here.

Keywords: tunable diode; diode laser; spectroscopy; pressure broadening ... See more keywords
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Quantitative Tomographic Laser Absorption Imaging of Atomic Potassium during Combustion of Potassium Chloride Salt and Biomass

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Published in 2022 at "Analytical Chemistry"

DOI: 10.1021/acs.analchem.2c03890

Abstract: Gaseous potassium (K) species play an important role in biomass combustion processes, and imaging techniques are powerful tools to investigate the related gas-phase chemistry. Here, laser absorption imaging of gaseous atomic K in flames is… read more here.

Keywords: laser absorption; chemistry; potassium; absorption imaging ... See more keywords
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Tunable Diode Laser Absorption Spectroscopy Diagnostics of Potassium, Carbon Monoxide, and Soot in Oxygen-Enriched Biomass Combustion Close to Stoichiometry

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Published in 2019 at "Energy & Fuels"

DOI: 10.1021/acs.energyfuels.9b02257

Abstract: Combustion facilities run on pulverized biomass often exhibit fluctuations in fuel feeding and, thus, equivalence ratio and would benefit from fast process control based on optical λ sensors instal ... read more here.

Keywords: tunable diode; diode laser; spectroscopy; biomass ... See more keywords
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Changes in pulmonary oxygen content are detectable with laser absorption spectroscopy: proof of concept in newborn piglets

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Published in 2020 at "Pediatric Research"

DOI: 10.1038/s41390-020-0971-x

Abstract: Background Using an optical method based on tunable diode laser absorption spectroscopy, we previously assessed oxygen (O 2 ) and water vapor (H 2 O) content in a tissue phantom of the preterm infant lung.… read more here.

Keywords: absorption; oxygen; laser absorption; spectroscopy ... See more keywords
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Development of in-airway laser absorption spectroscopy for respiratory based measurements of cardiac output

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Published in 2021 at "Scientific Reports"

DOI: 10.1038/s41598-021-84649-0

Abstract: Respiratory approaches to determining cardiac output in humans are securely rooted in mass balance and therefore potentially highly accurate. To address existing limitations in the gas analysis, we developed an in-airway analyser based on laser… read more here.

Keywords: cardiac output; laser absorption; spectroscopy; absorption spectroscopy ... See more keywords
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Thermal Marangoni trapping driven by laser absorption in evaporating droplets for particle deposition.

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Published in 2022 at "Soft matter"

DOI: 10.1039/d2sm01019d

Abstract: Controlling the deposition of particles is of great importance in many applications. In this work, we study particle deposition driven by Marangoni flows, triggered by laser absorption inside an evaporating droplet. When the laser is… read more here.

Keywords: laser absorption; deposition; particle deposition; marangoni flows ... See more keywords
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Measurement of He neutral temperature in detached plasmas using laser absorption spectroscopy

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Published in 2018 at "AIP Advances"

DOI: 10.1063/1.4997840

Abstract: The reduction of the heat load onto plasma-facing components by plasma detachment is an inevitable scheme in future nuclear fusion reactors. Since the control of the plasma and neutral temperatures is a key issue to… read more here.

Keywords: temperature; neutral temperature; laser absorption; spectroscopy ... See more keywords
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Recent progress on laser absorption spectroscopy for determination of gaseous chemical species

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Published in 2020 at "Applied Spectroscopy Reviews"

DOI: 10.1080/05704928.2020.1857258

Abstract: Laser absorption spectroscopy combined with spectral analysis has been extensively investigated in detection and measurements of gas samples because of their broad applicability for measuring more ... read more here.

Keywords: recent progress; laser absorption; spectroscopy; absorption spectroscopy ... See more keywords