Journal article
Resonant scattering of energetic electrons by unusual low‐frequency hiss
Geophysical research letters, Vol.41(6), pp.1854-1861
03/28/2014
DOI: 10.1002/2014GL059389
Abstract
We quantify the resonant scattering effects of the unusual low‐frequency dawnside plasmaspheric hiss observed on 30 September 2012 by the Van Allen Probes. In contrast to normal (~100–2000 Hz) hiss emissions, this unusual hiss event contained most of its wave power at ~20–200 Hz. Compared to the scattering by normal hiss, the unusual hiss scattering speeds up the loss of ~50–200 keV electrons and produces more pronounced pancake distributions of ~50–100 keV electrons. It is demonstrated that such unusual low‐frequency hiss, even with a duration of a couple of hours, plays a particularly important role in the decay and loss process of energetic electrons, resulting in shorter electron lifetimes for ~50–400 keV electrons than normal hiss, and should be carefully incorporated into global modeling of radiation belt electron dynamics during periods of intense injections.
Key Points
Unusual hiss scatters ~50‐200 keV electrons more rapidly than normal hiss
Resultant electron lifetimes can be of ≤ 1 hour for energetic electrons
Unusual hiss scattering should be incorporated into radiation belt modeling
Details
- Title: Subtitle
- Resonant scattering of energetic electrons by unusual low‐frequency hiss
- Creators
- Binbin Ni - University of California, Los AngelesLunjin Chen - University of Texas at DallasCraig A Kletzing - University of IowaWen Li - University of California, Los AngelesWilliam S Kurth - University of IowaGeorge B Hospodarsky - University of IowaRichard M Thorne - University of California, Los AngelesJacob Bortnik - University of California, Los AngelesQianli Ma - University of California, Los AngelesGeoffrey D Reeves - Los Alamos National LaboratoryHarlan E Spence - University of New HampshireJ Bernard Blake - The Aerospace CorporationJoseph F Fennell - The Aerospace CorporationSeth G Claudepierre - The Aerospace Corporation
- Resource Type
- Journal article
- Publication Details
- Geophysical research letters, Vol.41(6), pp.1854-1861
- DOI
- 10.1002/2014GL059389
- ISSN
- 0094-8276
- eISSN
- 1944-8007
- Number of pages
- 8
- Language
- English
- Date published
- 03/28/2014
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984200040402771
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