Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Michael B. Pushkarsky"'
Autor:
Michael E. Webber, Frank M. Mitloehner, Nichole Marcillac, Yongjing Zhao, Michael B. Pushkarsky, C. Kumar N. Patel, Tyson MacDonald
Publikováno v:
Measurement Science and Technology. 16:1547-1553
A trace-gas sensor based on fibre-amplifier enhanced photoacoustic spectroscopy has been developed for measuring ambient ammonia in agricultural settings. The sensor was built in an enclosure for continuous, unattended operation in dusty and humid co
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b2720f6d15d9cde96b87fa513ccdb7fe
https://doi.org/10.1088/0957-0233/16/8/002
https://doi.org/10.1088/0957-0233/16/8/002
Publikováno v:
Applied Physics B. 77:381-385
An ambient trace-ammonia sensor that uses resonant photoacoustic spectroscopy and a line-tunable CO2 laser has been developed. This system achieves a 1σ replicate precision of 32 parts-per-trillion (ppt) with an averaging time of 5 s and a total mea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ad9a57f276a087af017368ed8291d6c4
https://doi.org/10.1007/s00340-003-1266-8
https://doi.org/10.1007/s00340-003-1266-8
Publikováno v:
The Journal of Chemical Physics. 115:10738-10744
The spectra of the X2A′-A2A″ electronic transition of jet-cooled vinyl radical, C2H3, and its partially deuterated isotopomer, CD2CH, have been obtained via action spectroscopy. The appearance of the H or D fragment was monitored via 1+1′ reson
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc3c6f0060e3ce9176ff50f7f294715f
https://doi.org/10.1063/1.1416495
https://doi.org/10.1063/1.1416495
Publikováno v:
The Journal of Chemical Physics. 113:9649-9657
The radiative and nonradiative decay of the A 2E electronic state of the CH3S radical has been investigated using a variety of experimental techniques. Lifetimes have been measured for a number of vibrational levels; these data have been analyzed alo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::53c76079989474dfc815265105730784
https://doi.org/10.1063/1.1289461
https://doi.org/10.1063/1.1289461
Publikováno v:
The Journal of Chemical Physics. 112:10695-10698
Cavity ringdown spectra of the A 2A′−X 2A″ electronic transition in the IR are reported for the methyl and ethyl peroxy radicals. Analysis of partially resolved rotational structure for the origin band of the transition provides information abo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ba195bfe714fcbe85a16cd43e5421797
https://doi.org/10.1063/1.481705
https://doi.org/10.1063/1.481705
Publikováno v:
The Journal of Chemical Physics. 110:2016-2028
The fluorescence depletion spectroscopy (FDS) technique has been applied to the A 2E electronic state of the CdCH3 radical to investigate “dark” vibronic levels. The observed FDS spectrum complements the sparse laser-induced fluorescence and reso
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::54d40952c4faffc3d39908b7dcd6d667
https://doi.org/10.1063/1.477867
https://doi.org/10.1063/1.477867
Publikováno v:
The Journal of Chemical Physics. 106:6863-6877
The laser induced fluoresence excitation spectrum for the A 2A1↔X 2E transition of the methoxy radical has been reinvestigated. An extensive set of vibrational levels has been assigned with the aid of increased vibrational and rotational cooling. M
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e99b7bc4d829e025fd146260ad3fcdc
https://doi.org/10.1063/1.473712
https://doi.org/10.1063/1.473712
Publikováno v:
Chemical Physics Letters. 247:548-554
The spectrum of the CF 3 S free radical has been observed for the first time cooled in a supersonic free jet expansion. Both ‘bright’ and ‘dark’ levels of the A state have been observed using a combination of laser-induced fluorescence and fl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4c309f5225c57eb04caae215e5f675aa
https://doi.org/10.1016/s0009-2614(95)01252-4
https://doi.org/10.1016/s0009-2614(95)01252-4
Autor:
Manu Prasanna, Rowel Go, Alexei Tsekoun, Michael B. Pushkarsky, C. Kumar N. Patel, I. Dunayevskiy
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America. 103(52)
We report high-sensitivity detection of 2,4,6-trinitrotoluene (TNT) by using laser photoacoustic spectroscopy where the laser radiation is obtained from a continuous-wave room temperature high-power quantum cascade laser in an external grating cavity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e140aa9528a8651c90976253344a3f87
https://pubmed.ncbi.nlm.nih.gov/17164325
https://pubmed.ncbi.nlm.nih.gov/17164325
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America. 103(29)
We report the sub-parts-per-billion-level detection of NO 2 using tunable laser-based photoacoustic spectroscopy where the laser radiation is obtained from a room-temperature continuous-wave high-power quantum cascade laser operating in an external g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e6c66e00934434d1317ad6b549f8f95
https://pubmed.ncbi.nlm.nih.gov/16829569
https://pubmed.ncbi.nlm.nih.gov/16829569