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| Titel |
Nonlinear interactions between relativistic radiation belt electrons and oblique whistler mode waves |
| VerfasserIn |
X. Tao, J. Bortnik |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1023-5809
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| Digitales Dokument |
URL |
| Erschienen |
In: Nonlinear Processes in Geophysics ; 17, no. 5 ; Nr. 17, no. 5 (2010-10-26), S.599-604 |
| Datensatznummer |
250013737
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| Publikation (Nr.) |
 copernicus.org/npg-17-599-2010.pdf |
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| Zusammenfassung |
| Resonant interactions between relativistic charged particles and oblique
whistler mode waves are explored in this work, and it is shown that nonlinear
phase trapping could happen in a gyrophase averaged sense, consistent with
previous studies of interactions between nonrelativistic electrons and
oblique whistler mode waves. A dimensionless parameter χ is derived to
represent the ratio of wave-induced motion to the adiabatic motion of the
particle. We show that phase trapping is likely to occur when the
wave-induced motion dominates the adiabatic motion, which is caused mainly by
the background fields. A mapping of probable regions of nonlinear
interactions is shown based on the parameter χ. We show that the
nonlinear interactions might be important near the equatorial plane for even
moderate wave amplitude, and the latitudinal range for nonlinear interactions
to occur is largest for electrons with local pitch angles around 50 degrees,
consistent with previous findings. The results are important for
understanding the nonlinear dynamics of relativistic radiation belt electrons
and the generation of chorus waves. |
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