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| Titel |
Rapid energization of radiation belt electrons by nonlinear wave trapping |
| VerfasserIn |
Y. Katoh, Y. Omura, D. Summers |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
0992-7689
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| Digitales Dokument |
URL |
| Erschienen |
In: Annales Geophysicae ; 26, no. 11 ; Nr. 26, no. 11 (2008-11-06), S.3451-3456 |
| Datensatznummer |
250016285
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| Publikation (Nr.) |
 copernicus.org/angeo-26-3451-2008.pdf |
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| Zusammenfassung |
| We show that nonlinear wave trapping plays a significant role in both the
generation of whistler-mode chorus emissions and the acceleration of
radiation belt electrons to relativistic energies. We have performed
particle simulations that successfully reproduce the generation of chorus
emissions with rising tones. During this generation process we find that a
fraction of resonant electrons are energized very efficiently by special
forms of nonlinear wave trapping called relativistic turning acceleration
(RTA) and ultra-relativistic acceleration (URA). Particle energization by
nonlinear wave trapping is a universal acceleration mechanism that can be
effective in space and cosmic plasmas that contain a magnetic mirror
geometry. |
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