Search Results - "Yau, AW"

Sources of Ion Outflow in the High Latitude Ionosphere by Yau, A W, Andre, M

“…Ion composition observations from polar-orbiting satellites in the past three decades have revealed and confirmed the occurrence of a variety of ion outflow…”
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Akebono/Suprathermal Mass Spectrometer observations of low-energy ion outflow: Dependence on magnetic activity and solar wind conditions by Cully, C. M., Donovan, E. F., Yau, A. W., Arkos, G. G.

“…We present observations by the Suprathermal Mass Spectrometer (SMS) on Akebono (EXOS‐D) of ion outflow in the energy range from <1 to ∼70 eV. These…”
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Long-term variation of the polar wind velocity and its implication for the ion acceleration process: Akebono/suprathermal ion mass spectrometer observations by Abe, Takumi, Yau, Andrew W., Watanabe, Shigeto, Yamada, Manabu, Sagawa, Eiichi

“…We present the solar activity dependence and seasonal variation of H+ and O+ polar wind velocity profiles observed by the suprathermal ion mass spectrometer…”
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Supply of thermal ionospheric ions to the central plasma sheet by Cully, C. M., Donovan, E. F., Yau, A. W., Opgenoorth, H. J.

“…New observations from the Akebono satellite [Cully et al., 2002] evaluate the magnitude and solar wind dependence of the thermal component of terrestrial ion…”
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Polar/Toroidal Imaging Mass-Angle Spectrograph observations of suprathermal ion outflow during solar minimum conditions by Peterson, W. K., Collin, H. L., Yau, A. W., Lennartsson, O. W.

“…We present observations of the magnitude and variability of escaping suprathermal ions in the energy per charge range of 15 eV/e to 33 keV/e. The data were…”
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Investigation into the spatial and temporal coherence of ionospheric outflow on January 9–12, 1997 by Peterson, W.K., Collin, H.L., Boehm, M., Yau, A.W., Cully, C., Lu, G.

“…Long-term average ion outflow data derived from the Dynamics Explorer 1 energetic ion mass spectrometer data revealed very strong correlation between the net…”
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Generation of high-density plasma in the polar cap observed by the Akebono satellite by Abe, T., Ichikawa, Y., Yau, A.W.

“…The polar cap ionosphere is known as a comparatively low-density (<10 3 cm −3 above 3000 km) plasma region and less active than the cusp or auroral region in…”
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Plasma density enhancements in the high-altitude polar cap region observed on Akebono by Ichikawa, Yoh-ichi, Abe, Takumi, Yau, Andrew W.

“…The plasma density in the polar cap ionosphere is generally low (<103 cm−3 above 3000 km), mainly because of plasma escape from the ionosphere along open…”
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Ion temperature measurements from the Akebono suprathermal mass spectrometer: Application to the polar wind by Drakou, E., Yau, A. W., Abe, T.

“…We present a method for estimating the thermal ion drift velocity, ion temperature, and spacecraft potential in the polar ionosphere from data acquired with…”
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Simultaneous satellite and radar observations of the polar ion outflow and the flux variation with the geomagnetic condition by Abe, T., Knudsen, D.J., Yau, A.W., Watanabe, S., Sagawa, E.

“…In the first part of this paper, we present observations of thermal H + and O + ion outflow in the middle to high altitude polar ionosphere from the…”
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Planned observations of thermal plasma drifts and solar wind interactions in the Martian ionosphere by Yau, A. W., Garbe, G. P., Greffen, M. J., Miyake, W., Sagawa, E.

“…The structure and dynamics of the Martian ionosphere are believed to be strongly dependent on the nature, magnitude, and topology of its magnetic field, and…”
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The Freja F3C Cold Plasma Analyzer by Whalen, B. A., Knudsen, D. J., Yau, A. W., Pilon, A. M., Cameron, T. A., Sebesta, J. F., McEwen, D. J., Koehler, J. A., Lloyd, N. D., Pocobelli, G., Laframboise, J. G., Li, W., Lundin, R., Eliasson, L., Watanabe, S., Campbell, G. S.

“…The F3C Cold Plasma Analyzer (CPA) instrument on the Freja spacecraft is designed to measure the energy per unit charge (E/Q) of ions or electrons in the range…”
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Towards the miniaturization of a space-borne electrostatic energy analyzer: the miniature enhanced geometry electrostatic analyzer (MEGEA) by Amerl, P.V., Yau, A.W.

“…The Miniature Enhanced Geometry Electrostatic Analyzer (MEGEA) is a spiral 270/spl deg/ Electrostatic Analyzer (EA). Adopting the spiral shape results in an…”
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Ionization in a dense hydrogen plasma: analytic solution of the master equation by Yau, A. W., Pritchard, H. O.

“…The master equation is solved analytically for the ionization in a dense hydrogen plasma involving single-quantum transitions. The derived expression for the…”
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Toward a unified master-equation theory of thermal decomposition reactions: Analytic solution for diatomic dissociation by Yau, Andrew W, Pritchard, Huw O

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Studies of the electron-impact ionization cross section of vibrationally excited oxygen employing a shock-heated molecular beam by Evans, B, Chang, JS, Yau, AW, Nicholls, RW, Hobson, RM

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