Zobrazeno 1 - 10
of 19
pro vyhledávání: '"N. R. Newbury"'
Autor:
C. Weerasekara, L. C. Morris, N. A. Malarich, F. R. Giorgetta, D. I. Herman, K. C. Cossel, N. R. Newbury, C. E. Owensby, S. M. Welch, C. Blaga, B. D. DePaola, I. Coddington, B. R. Washburn, E. A. Santos
Publikováno v:
Atmospheric Measurement Techniques, Vol 17, Pp 6107-6117 (2024)
Accurate whole-farm or herd-level measurements of livestock methane emissions are necessary for anthropogenic greenhouse gas inventories and to evaluate mitigation strategies. A controlled methane (CH4) release experiment was performed to determine i
Externí odkaz:
https://doaj.org/article/2b418c8290724df2a7b6ddb4cfb623ab
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 5697-5707 (2023)
Determination of trace gas emissions from sources is critical for understanding and regulating air quality and climate change. Here, we demonstrate a method for rapid quantification of the emission rate of multiple gases from simple and complex sourc
Externí odkaz:
https://doaj.org/article/63ae70467bc543f0a65fcf845eb29fca
Autor:
D. I. Herman, G. Mead, F. R. Giorgetta, E. Baumann, N. A. Malarich, B. R. Washburn, N. R. Newbury, I. Coddington, K. C. Cossel
Publikováno v:
Atmospheric Measurement Techniques, Vol 16, Pp 4053-4066 (2023)
We present an open-path mid-infrared dual-comb spectroscopy (DCS) system capable of precise measurement of the stable water isotopologues H216O and HD16O. This system ran in a remote configuration at a rural test site for 3.75 months with 60 % uptime
Externí odkaz:
https://doaj.org/article/855974fb5d8348208f32b439a2c514aa
Autor:
E. M. Waxman, K. C. Cossel, F. Giorgetta, G.-W. Truong, W. C. Swann, I. Coddington, N. R. Newbury
Publikováno v:
Atmospheric Chemistry and Physics, Vol 19, Pp 4177-4192 (2019)
We performed 7.5 weeks of path-integrated concentration measurements of CO2, CH4, H2O, and HDO over the city of Boulder, Colorado. An open-path dual-comb spectrometer simultaneously measured time-resolved data across a reference path, located near
Externí odkaz:
https://doaj.org/article/7cacf3ca837242a78d86dce73fe9e188
Autor:
E. M. Waxman, K. C. Cossel, G.-W. Truong, F. R. Giorgetta, W. C. Swann, S. Coburn, R. J. Wright, G. B. Rieker, I. Coddington, N. R. Newbury
Publikováno v:
Atmospheric Measurement Techniques, Vol 10, Pp 3295-3311 (2017)
We present the first quantitative intercomparison between two open-path dual-comb spectroscopy (DCS) instruments which were operated across adjacent 2 km open-air paths over a 2-week period. We used DCS to measure the atmospheric absorption spectr
Externí odkaz:
https://doaj.org/article/0ccf7e0bbcba4e4c8e02d62f37478efb
Publikováno v:
Physical Review A. 104
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::586c8c661aec54e1726d82d638daf0f1
https://doi.org/10.1103/physreva.104.069904
https://doi.org/10.1103/physreva.104.069904
Publikováno v:
Conference on Lasers and Electro-Optics.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e8f497e5d320176da14572968d2184d
https://doi.org/10.1364/cleo_si.2019.sm2n.3
https://doi.org/10.1364/cleo_si.2019.sm2n.3
Autor:
W. Meyer, Sayed Rokni, Timothy Chupp, Y. Roblin, J. Morgenstern, C. C. Young, R. Prepost, H. Borel, E. W. Hughes, Z. M. Szalata, S. E. Rock, Timothy B. Smith, R. G. Arnold, H. Fonvieille, M. Woods, H. R. Band, F. S. Dietrich, P. E. Bosted, J. Fellbaum, F. Staley, H. Middleton, M. Spengos, Y. Terrien, Alan K. Thompson, L. M. Stuart, R. Erbacher, J. A. Dunne, T. Maruyama, J. Xu, Z. E. Meziani, Gilbert Shapiro, J. R. Johnson, N. R. Newbury, D. Kawall, G. G. Petratos, R. Holmes, G. H. Zapalac, J. Marroncle, P.L. Anthony, C. E. Keppel, James L. White, Vincent Breton, S. E. Kuhn, Gordon D. Cates, R. Pitthan, Paul A Souder, R. M. Lombard-Nelsen, R. A. Gearhart
Publikováno v:
Physical Review D. 54:6620-6650
The neutron longitudinal and transverse asymmetries ${A}_{1}^{n}$ and ${A}_{2}^{n}$ have been extracted from deep inelastic scattering of polarized electrons by a polarized $^{3}\mathrm{He}$ target at incident energies of 19.42, 22.66, and 25.51 GeV.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3511ad833d75d4edd4e9da9b4be6cf9b
https://doi.org/10.1103/physrevd.54.6620
https://doi.org/10.1103/physrevd.54.6620
Publikováno v:
Physical Review A. 49:2766-2770
We have studied the frequency shift in the Rb electron-paramagnetic-resonance (EPR) line due to the presence of nuclear polarized $^{3}\mathrm{He}$. By measuring the resonant frequency in a cylindrical cell oriented both parallel and perpendicular to
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f073223d74a0391c72934d85422b73eb
https://doi.org/10.1103/physreva.49.2766
https://doi.org/10.1103/physreva.49.2766
Publikováno v:
Physical Review A. 48:4411-4420
We derive the nuclear-spin relaxation rate of gaseous $^{3}\mathrm{He}$ due to the magnetic-dipole interaction between the $^{3}\mathrm{He}$ nuclear spins. This dipolar relaxation rate is numerically evaluated for temperatures from 0.1 K to 550 K. At
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8acd09bc97584fa9926da9fc52b13c33
https://doi.org/10.1103/physreva.48.4411
https://doi.org/10.1103/physreva.48.4411