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AGU: Journal of Geophysical Research, Space Physics

 

Index Terms

  • Magnetospheric Physics: Energetic particles, precipitating
  • Ionosphere: Wave/particle interactions
  • Radio Science: Waves in plasma
  • Magnetospheric Physics: Magnetosphere—inner
Abstract
Cited By (20)
 

Abstract

Controlled precipitation of radiation belt electrons

U. S. Inan

STAR Laboratory, Stanford University, Stanford, California, USA

T. F. Bell

STAR Laboratory, Stanford University, Stanford, California, USA

J. Bortnik

STAR Laboratory, Stanford University, Stanford, California, USA

J. M. Albert

Institute for Scientific Research, Boston College, Chestnut Hill, Massachusetts, USA

First-order estimates indicate that the lifetime of energetic (a few MeV) electrons in the inner radiation belts (e.g., near L = 2) may be significantly reduced by in situ injection of whistler mode waves at radiated power levels of a few kW at frequencies of a few kHz. Our estimates are based on previously published results concerning the effect on the electron lifetimes of VLF signals from ground-based VLF transmitters operating in the 17–23 kHz range. Waves at lower frequencies (a few kHz) can drive diffusion rates that are higher by a factor of as much as ∼30 and can also be efficiently stored in the magnetospheric cavity, resulting in additional effective enhancement of wave power density of a factor of ∼16. This wave power enhancement is also expected to enhance the MeV electron diffusion rates.

Published 15 May 2003.

Citation: Inan, U. S., T. F. Bell, J. Bortnik, and J. M. Albert (2003), Controlled precipitation of radiation belt electrons, J. Geophys. Res., 108(A5), 1186, doi:10.1029/2002JA009580.

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