On the influence of the initial pitch angle distribution on relativistic electron beam dynamics

Simulations of the evolution of a relativistic electron beam injected into the Earth's magnetosphere are examined. It is found that the lifetime of beam particles strongly depends on the initial pitch angle distribution and that lifetimes similar to those found for the radiation belts are obtai...

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Bibliographic Details
Published in:Journal of Geophysical Research, Washington, DC Washington, DC, 2000-07, Vol.105 (A7), p.16093-16094
Main Authors: Khazanov, G. V., Liemohn, M. W., Krivorutsky, E. N., Kozyra, J. U., Albert, J. M., Gilchrist, B. E.
Format: Article
Language:English
Subjects:
Earth, ocean, space
Exact sciences and technology
External geophysics
Other topics in aeronomy and magnetospheric physics
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Summary:Simulations of the evolution of a relativistic electron beam injected into the Earth's magnetosphere are examined. It is found that the lifetime of beam particles strongly depends on the initial pitch angle distribution and that lifetimes similar to those found for the radiation belts are obtained for nearly equatorially mirroring injections. It is concluded that the results of our previous study on beam propagation [Khazanov et al, 1999], which only considered upper ionospheric injections, are consistent with other relativistic electron studies and should be regarded as an examination of the loss cone edge population, whether naturally occurring or artificially injected into near‐Earth space.
ISSN:0148-0227
2156-2202
DOI:10.1029/2000JA000037