Results 161 to 170 of about 30,333 (190)

Inner-belt Van Allen radiation

Space Science Reviews, 1969
A survey of the present state of knowledge about the inner radiation zone is presented. This includes a historical review of empirical data and theoretical considerations concerning electrons, protons, and heavier particles. Included are results obtained from the various high-altitude nuclear tests.
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The geomagnetic cavity and the Van Allen radiation belts

Planetary and Space Science, 1966
Using the spherical harmonic expansion given by Mead for the magnetic field created by the currents on the surface of the geomagnetic cavity, the nature of the trapping regions has been discussed. It is shown that to a first order of approximation in the expansion coefficients, the allowed regions are still determined by a cubic equation.
K.S. Viswanathan, P. Venkatarangan
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The Stability of the Van Allen Radiation Belt

SIAM Journal on Applied Mathematics, 1979
In this paper we derive two classes of invariant tori which lie on energy surfaces which are large enough to accommodate the charged particles in the Van Allen radiation belt.
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Charged particles in the inner Van Allen radiation belt

Journal of Geophysical Research, 1961
A nuclear emulsion stack was flown through the lower part of the inner Van Allen radiation belt a few days after the intense solar flares of July 10 to 16, 1959. The stack looked out through a thin window on the mounting plate at the rear of the nose cone. Protons with incident energies down to 42 Mev were recorded.
A. H. Armstrong, F. B. Harrison, H. H. Heckman, L. Rosen   +3 more
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Van Allen Radiation Belt Electron Dynamics During Geomagnetic Storms

2022
Space radiation is often identified as one of the most prominent dangers of space exploration. It mostly originates at the Sun and streams into the space between planets, creating hazardous radiation conditions at every point of the solar system which is not shielded by an atmosphere.
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Radio frequency synchrotron radiation from the Van Allen belts

Journal of Geophysical Research, 1967
Consider the case of Figure 1 in which an observer in space observes the earth at radio frequencies. In particular, consider the radio brightness distribution in one dimension; i.e. let the observer look at the earth such that he looks in the equatorial plane of the centered dipole model for the geomagnetic field.
J. F. Vesecky, A. M. Peterson
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Maximum total energy of the Van Allen radiation belt

Journal of Geophysical Research, 1960
It is the purpose of this letter to point out that the results of the spherical harmonic analysis of the geomagnetic field place an upper limit on the energy that can be stored in the Van Allen radiation belt. It will be shown that conservative figures indicate a maximum energy in trapped radiation of 6×1015 joules.
A. J. Dessler, E. H. Vestine
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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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An impenetrable barrier to ultrarelativistic electrons in the Van Allen radiation belts

Nature, 2014
Early observations indicated that the Earth's Van Allen radiation belts could be separated into an inner zone dominated by high-energy protons and an outer zone dominated by high-energy electrons. Subsequent studies showed that electrons of moderate energy (less than about one megaelectronvolt) often populate both zones, with a deep 'slot' region ...
D N, Baker, A N, Jaynes, V C, Hoxie, R M, Thorne, J C, Foster, X, Li, J F, Fennell, J R, Wygant, S G, Kanekal, P J, Erickson, W, Kurth, W, Li, Q, Ma, Q, Schiller, L, Blum, D M, Malaspina, A, Gerrard, L J, Lanzerotti   +17 more
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Source of High-Energy Protons in the Van Allen Radiation Belt

Physical Review Letters, 1970
Proton distribution in radiation belt inner zone from radial diffusion addition to cosmic ray produced albedo-neutron decay and atmospheric collision ...
T. A. Farley, A. D. Tomassian, Martin Walt   +2 more
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