Zobrazeno 1 - 10
of 40
pro vyhledávání: '"Andrew D. Sappey"'
Publikováno v:
Applied optics. 61(10)
We have developed and tested a laser heterodyne radiometer (LHR) for detecting methane leaks from upstream oil and gas infrastructure and landfills that uses the Sun as the signal light source, demonstrating here sensitivity sufficient to detect “s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb8ae39e3c58222b00fe7c339f0a0e50
https://pubmed.ncbi.nlm.nih.gov/35471340
https://pubmed.ncbi.nlm.nih.gov/35471340
Publikováno v:
Applied Optics. 60:884
We have developed a novel laser heterodyne radiometer using a fiber-coupled distributed feedback laser as the local oscillator to perform spectroscopic measurements of small molecules in the near-infrared (NIR) spectral region. Here, we demonstrate m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb4e7a4ea039b8625b29b9b94f641fa6
https://doi.org/10.1364/ao.413061
https://doi.org/10.1364/ao.413061
Publikováno v:
Journal of the Optical Society of America B. 37:3829
We have developed a sensitive, novel laser heterodyne radiometer using a fiber-coupled distributed feedback laser as the local oscillator to measure Fe(I) Fraunhofer lines Doppler-shifted by the rotational motion of the Sun. The radiometer repetitive
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0175a06d1e79ad36645876a132e485fe
https://doi.org/10.1364/josab.404190
https://doi.org/10.1364/josab.404190
Autor:
Andrew D. Sappey
Publikováno v:
Conference on Lasers and Electro-Optics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e2fb1000884a38492862f8c857c2d97
https://doi.org/10.1364/cleo_at.2019.ath4k.5
https://doi.org/10.1364/cleo_at.2019.ath4k.5
Publikováno v:
Journal of Propulsion and Power. 30:24-28
The authors have demonstrated tunable diode laser spectroscopy measurements of temperature and water concentration with spatial resolution at the nozzle exit of an augmented gas turbine engine for the first time. Spatial resolution was achieved by pe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fdb75b336864ec171a1ed49d0dda11e8
https://doi.org/10.2514/1.b34212
https://doi.org/10.2514/1.b34212
Autor:
Jim Howell, Mike Estes, Andrew D. Sappey, Eric Huelson, Atilio Jobson, Henrik Hofvander, Pat Masterson
Publikováno v:
Combustion Science and Technology. 183:1282-1295
The National Energy Technologies Laboratory (NETL) has sponsored two technology demonstration projects at coal-fired power plants to reduce CO2 through combustion balancing and optimization. The Zolo Technologies–led projects at DTE Belle River Uni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d928015a58ebc6e6c8be30fd16fcaeb1
https://doi.org/10.1080/00102202.2011.590560
https://doi.org/10.1080/00102202.2011.590560
Publikováno v:
Journal of the American Ceramic Society. 77:1411-1417
Understanding the vaporization behavior of nuclear fuel materials in high-temperature environments is critical for several proposed nuclear thermal propulsion (NTP) concepts. In particular, the uranium-zirconium-carbon (U-Zr-C) system is of importanc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bb07a9db158f5632f57ad6770a6b17d9
https://doi.org/10.1111/j.1151-2916.1994.tb09737.x
https://doi.org/10.1111/j.1151-2916.1994.tb09737.x
Autor:
Andrew D. Sappey
Publikováno v:
Applied optics. 33(36)
A novel method for detection of ballistic light and rejection of unwanted diffusive light to image structures inside highly scattering media is demonstrated. Degenerate four wave mixing (DFWM) of a doubled YAG laser in Rhodamine 6G is used to provide
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ccce8f1e974eb027c7a12141f4725f62
https://pubmed.ncbi.nlm.nih.gov/20963068
https://pubmed.ncbi.nlm.nih.gov/20963068
Autor:
Andrew D. Sappey, Thomas K. Gamble
Publikováno v:
Journal of Applied Physics. 72:5095-5107
Planar laser‐induced fluorescence (PLIF) is used to monitor Cu atoms and Cu2 produced by excimer laser ablation of a copper target (308 nm, ≳10 J/cm2, 1–3 GW/cm2) expanding rapidly into helium background gas at pressures ranging from 10 to 100
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ae785d103911589fa5b06034f8e44c89
https://doi.org/10.1063/1.352039
https://doi.org/10.1063/1.352039
Autor:
Andrew D. Sappey, Timothy Griffin, Lisa D. Pfefferle, David R. Crosley, Maura Calabrese, Richard A. Copeland
Publikováno v:
Combustion and Flame. 90:11-33
The boundary layer ignition of fuel/air mixtures by heated catalytic (platinum) and noncatalytic (quartz) surfaces was studied through spatially resolved measurement of hydroxyl radicals at total pressures from 40 to 175 torr. Subatmospheric pressure
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ceb236373eb276d48ce30dc44e581a1a
https://doi.org/10.1016/0010-2180(92)90133-a
https://doi.org/10.1016/0010-2180(92)90133-a