Journal article
Electron time dispersion
Journal of geophysical research. Space physics, Vol.99(A2), pp.2159-2172
1994
DOI: 10.1029/93JA01745
Abstract
Observations of electrons during a sounding rocket flight from Sondrestromfjord, Greenland, in 1985 showed numerous instances of electron time-of-flight dispersion, that is, a coherent structure in which fast electrons arrived before slow electrons. The instrumentation measured many pitch angles simultaneously with high time resolution, providing a detailed view of the temporal evolution of the electron signature at rocket altitudes which was indicative of an impulsive injection of electrons over a range of energies. A model utilizing an extended, quasi-static (static on a timescale of 1 s), parallel electric field was developed to investigate a possible mechanism for the injection of these electrons. The model is found to fit the data well only when a background is added which cannot be self-consistently generated by the model, although other parameters used in the model are in general agreement with previous reports. This leads to the conclusion that electron dispersion is more probably generated by a wave acceleration mechanism.
Details
- Title: Subtitle
- Electron time dispersion
- Creators
- C. A Kletzing - University of New HampshireR. B Torbert - Univ. New Hamsphire, inst. study earth oceans space, physics dep., Durham NH 03824, United States
- Resource Type
- Journal article
- Publication Details
- Journal of geophysical research. Space physics, Vol.99(A2), pp.2159-2172
- Publisher
- American Geophysical Union
- DOI
- 10.1029/93JA01745
- ISSN
- 2169-9380
- eISSN
- 2169-9402
- Language
- English
- Date published
- 1994
- Academic Unit
- Physics and Astronomy
- Record Identifier
- 9984199790902771
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