Zobrazeno 1 - 10
of 28
pro vyhledávání: '"Thomas G. Spence"'
Publikováno v:
2021 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting (APS/URSI).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::58e8ce40f7c373f07222ac89003edde8
https://doi.org/10.1109/aps/ursi47566.2021.9703874
https://doi.org/10.1109/aps/ursi47566.2021.9703874
Autor:
Douglas H. Werner, Thomas G Spence
Publikováno v:
IEEE Transactions on Antennas and Propagation. 58:3931-3941
The Peano-Gosper space-filling curve provides an excellent framework for designing planar antenna array distributions with modular architectures and suppressed sidelobes over a relatively wide bandwidth. The curve consists of a self-avoiding path tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6fc36a52e93ccef01b707be2ea7ffd20
https://doi.org/10.1109/tap.2010.2078439
https://doi.org/10.1109/tap.2010.2078439
Autor:
Charles C. Harb, Paul J. Dagdigian, Thomas G. Spence, Karl David Pavey, Toby K. Boyson, David S. Moore, Nicholas John Fitzgerald
Publikováno v:
Optics letters. 40(19)
Cavity-enhanced spectroscopy is a sensitive optical absorption technique but one where the practical applications have been limited to studying small wavelength ranges. This Letter shows that wideband operation can be achieved by combining techniques
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cea37564476961ab7e3a9d7d75bda4b2
https://pubmed.ncbi.nlm.nih.gov/26421581
https://pubmed.ncbi.nlm.nih.gov/26421581
Autor:
Robert Provencal, Michael W. Todd, Jessica Glasser, Bruce A. Richman, Eric R. Crosson, Kenneth N. Ricci, Barbara A. Paldus, Frank C. Chilese, and Alex A. Kachanov, Thomas Owano, Thomas G. Spence, Richard N. Zare
Publikováno v:
Analytical Chemistry. 74:2003-2007
We have constructed a cavity ring-down spectrometer employing a near-IR external cavity diode laser capable of measuring 13C/12C isotopic ratios in CO2 in human breath. The system, which has a demonstrated minimum detectable absorption loss of 3.2 x
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cdd1258d990c02f20f4f549a40d98baa
https://doi.org/10.1021/ac025511d
https://doi.org/10.1021/ac025511d
Autor:
Robert L. Byer, Benno Willke, Richard N. Zare, Thomas G. Spence, Charles C. Harb, Barbara A. Paldus
Publikováno v:
Review of Scientific Instruments. 71:347-353
A system is described that employs a diode-pumped Nd:YAG continuous-wave laser source servolocked to a three-mirror optical cavity and an analog detection circuit that extracts the ring-down rate from the exponentially decaying ring-down waveform. Th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d6181d40ced226809bc17b23cef1153c
https://doi.org/10.1063/1.1150206
https://doi.org/10.1063/1.1150206
Autor:
Thomas G. Spence, H. A. Schwettman, Eric R. Crosson, P. Haar, Barbara A. Paldus, G. A. Marcus, Richard N. Zare
Publikováno v:
Review of Scientific Instruments. 70:4-10
Pulse stacking, or synchronous pumping, is a novel approach that offers important advantages in cavity ring-down spectroscopy. Using an ultrashort pulse, high repetition rate laser source we have shown that it is possible to resonantly stack pulses i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b08bf4ff3986abf033abeb6dbf0cba8
https://doi.org/10.1063/1.1149533
https://doi.org/10.1063/1.1149533
Publikováno v:
The Journal of Physical Chemistry A. 102:7779-7786
The first direct measurements of the contributions of individual solvent molecules to solvent reorganization associated with photoinitiated charge transfer in a coordination complex are reported fo...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e306663caf5914e7e9153f53f83ad352
https://doi.org/10.1021/jp982468i
https://doi.org/10.1021/jp982468i
Publikováno v:
International Journal of Mass Spectrometry. 177:187-196
Photochemistry resulting from excitation of a d–d transition at 575 nm between ligand-field states in the gas-phase [CuII(bpy)(serine–H)]+ · complex generated by electrospray ionization is reported. These results are discussed in terms of a reac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce01a3010b277f1bc590cf9e763cb1ff
https://doi.org/10.1016/s1387-3806(98)14049-6
https://doi.org/10.1016/s1387-3806(98)14049-6
Autor:
Barbara A. Paldus, Richard N. Zare, Marc D. Levenson, Thomas G. Spence, James S. Harris, Charles C. Harb
Publikováno v:
Chemical Physics Letters. 290:335-340
Polarization-selective optical heterodyne detection is shown to enhance the practical sensitivity of cavity ring-down spectroscopy. Initial experiments demonstrate a signal-to-noise ratio above 31 dB. Minor improvements should yield shot-noise-limite
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7083d82db075e942bdc1ce8445e44e6
https://doi.org/10.1016/s0009-2614(98)00500-4
https://doi.org/10.1016/s0009-2614(98)00500-4
Publikováno v:
The Journal of Physical Chemistry A. 102:6101-6106
The solvent dependence of metal-to-ligand charge transfer (MLCT) in the bis(2,2‘,2‘‘-terpyridyl)iron(II) complex, [Fe(terpy)2]2+, isolated in small gas-phase clusters with one or four molecules of the polar, organic solvents acetone, acetonitri
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a632680ed77b3c992493e3e5f0bcd32
https://doi.org/10.1021/jp982335x
https://doi.org/10.1021/jp982335x