Výsledky vyhledávání - "D. E. Hunton"

Airborne mass spectrometers: four decades of atmospheric and space research at the Air Force Research Laboratory

Publikováno v: Journal of Mass Spectrometry. 34:1107-1129

Mass spectrometry is a versatile research tool that has proved to be extremely useful for exploring the fundamental nature of the earth's atmosphere and ionosphere and in helping to solve operational problems facing the Air Force and the Department o

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c430c17f427d4fa82a19fcf027532f75
https://doi.org/10.1002/(sici)1096-9888(199911)34:11<1107::aid-jms880>3.0.co

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Ionization mechanisms in CRRES chemical releases: 1. In situ measurements and model results

Autor: T. M. Shadid, D. E. Hunton, Paul J. Wolf

Publikováno v: Journal of Geophysical Research: Space Physics. 103:457-470

The quadrupole ion mass spectrometer (QIMS) measured fluxes of barium and strontium ions during the CRRES G-1 chemical release in full Sun and the G-11b release in darkness. The barium ion fluxes detected in darkness were only a factor of 10 lower th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f22f63387e7d189e8c56d376206ab922
https://doi.org/10.1029/97ja02344

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Charge transfer reactions of metastable Ba(I) and Sr(I) in the CRRES G-11b Chemical Release Experiment

Autor: D. E. Hunton

Publikováno v: Geophysical Research Letters. 22:2115-2118

Mass resolved fluxes of Ba{sup +} and Sr{sup +} ions were measured with the Quadrupole Ion Mass Spectrometer during the CRRES G-11b chemical release experiment in darkness. The flux of Sr{sup +} relative to Ba{sup +} at a distance of 4 km from the re

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::142b0dfe14181f7f01f4132b53830442
https://doi.org/10.1029/95gl02063

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Observations and model comparisons of early-time expansion characteristics of a satellite-Borne barium-lithium release at F-region altitudes

Autor: E. P. Szuszczewicz, J. R. Wygant, D. E. Hunton, Robert W. Schunk

Publikováno v: Geophysical Research Letters. 20:2031-2034

We describe the very-early-time expansion processes (≈0 - 3 s) of the CRRES G-9 Ba+/Li+ cloud release, as manifested by thermal- and photo-ionization mechanisms, by coupling to the background ionosphere, and by differential acceleration of multi-io

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https://doi.org/10.1029/93gl01451

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Long-term expansion characteristics of CRRES barium release clouds

Autor: D. E. Hunton

Publikováno v: Geophysical Research Letters. 20:563-566

A straightforward approach to calculating number densities of barium ions at the satellite position following CRRES low altitude chemical releases is described. The calculation is based on a phenomenological model of the neutral barium cloud which is

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https://doi.org/10.1029/93gl00804

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The O++ CO2reaction: New results and atmospheric implications

Autor: J. F. Paulson, Nigel G. Adams, Robert A. Morris, David Smith, A. A. Viggiano, D. E. Hunton

Publikováno v: Journal of Geophysical Research: Space Physics. 96:13881-13886

The vibrational distribution of the O2+ product ion in the reaction of O+ with CO2 has been measured in a selected ion flow tube using the monitor ion technique. At 300 K the measured vibrational distribution is 45% of the ions in υ = 1, 32% in υ �

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https://doi.org/10.1029/91ja01175

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Redistribution of reactive nitrogen in the Arctic lower stratosphere in the 1999/2000 winter

Autor: Y. Masui, Makoto Koike, F. Lefevre, G. W. Sachse, H. D. E. Hunton, John O. Ballenthin, Albert A. Viggiano, Thomas M. Miller, Yutaka Kondo, Hitoshi Irie, Melody A. Avery, Bruce E. Anderson, Nobuyuki Takegawa, H. Ikeda

Publikováno v: Journal of Geophysical Research: Atmospheres
Journal of Geophysical Research: Atmospheres, 2002, 107 (D20), pp.SOL 17-1-SOL 17-16. ⟨10.1029/2001JD001089⟩

International audience; Total reactive nitrogen (NOy) in the Arctic lower stratosphere was measured from the NASA DC-8 aircraft during the SAGE III Ozone Loss and Validation Experiment (SOLVE) in the winter of 1999/2000. NOy-N2O correlations obtained

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8a7da3e07a3d36410b465ab0ebb51b5
https://doi.org/10.1029/2001jd001089

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