Results 121 to 130 of about 421 (156)

Equilibrium structure of radiation belt electrons

Journal of Geophysical Research, 1973
The detailed quiet time structure of energetic electrons in the earth's radiation belts is explained on the basis of a balance between pitch angle scattering loss and inward radial diffusion from an average outer zone source. Losses are attributed to a combination of classical Coulomb scattering at low L and whistler mode turbulent pitch angle ...
Lawrence R. Lyons, Richard Mansergh Thorne   +1 more
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Wave acceleration of electrons in the Van Allen radiation belts

Nature, 2005
The Van Allen radiation belts are two regions encircling the Earth in which energetic charged particles are trapped inside the Earth's magnetic field. Their properties vary according to solar activity and they represent a hazard to satellites and humans in space.
Horne, Richard B., Thorne, Richard M., Shprits, Yuri Y., Meredith, Nigel P., Glauert, Sarah A., Smith, Andy J., Kanekal, Shrikanth G., Baker, Daniel N., Engebretson, Mark J., Posch, Jennifer L., Spasojevic, Maria, Inan, Umran S., Pickett, Jolene S., Decreau, Pierrette M.E.   +13 more
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Mechanisms for the acceleration of radiation belt electrons

2006
During the declining phase of the solar cycle fast solar wind streams produce corotating interaction regions (CIRs) that drive moderate geomagnetic storms. These storms often have an unusually long recovery phase and produce high fluxes of relativistic electrons.
Horne, R.B., Meredith, N.P., Glauert, S.A., Varotsou, A., Boscher, D., Thorne, R.M., Shprits, Y.Y., Anderson, R.R.   +7 more
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Electron Acceleration in the Heart of the Van Allen Radiation Belts

Science, 2013
Local Acceleration How the electrons trapped in Earth-encircling Van Allen radiation belts get accelerated has been debated since their discovery in 1958. Reeves et al. (p.
Reeves, G. D., Spence, Harlan E., Henderson, M. G., Morley, S. K., Friedel, R. H. W., Funsten, H. O., Baker, D. N., Kanekal, S. G., Blake, J. B., Fennell, J. F., Claudepierre, S. G., Thorne, R. M., Turner, D. L., Kletzing, C A., Kurth, W. S., Larsen, B. A., Niehof, J. T.   +16 more
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Low‐altitude distribution of radiation belt electrons

Journal of Geophysical Research: Space Physics, 2004
A numerical simulation of the low‐altitude electron radiation belt is described. It includes dependences on the electrons' bounce and drift phases, equatorial pitch angle, and kinetic energy in the range of ∼1 to several MeV at L = 3.5. Physical processes in addition to the adiabatic electron motion are pitch angle diffusion and backscattering from a ...
R. S. Selesnick, M. D. Looper, J. M. Albert   +2 more
openaire   +1 more source

High-energy electrons in the radiation belt

Journal of Geophysical Research, 1963
The birth spectrums of high-energy electrons from the decay of energetic neutrons from cosmic ray albedo have been calculated. Assuming that energy loss is the principle loss mechanism for these energetic electrons, an equilibrium flux of electrons has been derived. (auth)
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A Statistical Survey of Radiation Belt Electron Dropouts

2018 2nd URSI Atlantic Radio Science Meeting (AT-RASC), 2018
RPID5180397newnew. Thus, we conduct a statistical study of radiation belt dropouts. If PSD drops by factor >5 within a period less than 8 hours, we call it a dropout event. Based on 4 years of VAP data, we get the dropout distribution as a function of $\mu$ , K, and L* and the relationship with solar wind parameters and geomagnetic parameters.
Zheng Xiang, Weichao Tu, Binbin Ni
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Loss cone distributions of radiation belt electrons

Journal of Geophysical Research, 1977
The electron population in and near the loss cone comprises trapped electrons, electrons that have diffused into the loss cone since their last bounce, and electrons that have interacted one or more times with the atmosphere. The distribution function of these electrons has been calculated by stepwise integrating the local pitch angle diffusion ...
G. Davidson, M. Walt
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Review of radiation belt relativistic electron losses

Journal of Atmospheric and Solar-Terrestrial Physics, 2007
We present a brief review of radiation belt electron losses which are vitally important for controlling the dynamics of the radiation belts. A historical overview of early observations is presented, followed by a brief description of important known electron loss mechanisms.
R.M. Millan, R.M. Thorne
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Characteristics of electrons at the trapping boundary of the radiation belt

Journal of Geophysical Research: Space Physics, 1997
New measurements are presented of the L‐dependent energy threshold for electron flux isotropy observed near midnight from low‐altitude satellites. These data provide the basis for an important remote sensing of the geomagnetic field configurations near the outer edge of the radiation belt.
W. L. Imhof, D. L. Chenette, E. E. Gaines, J. D. Winningham   +3 more
openaire   +1 more source