Measurement of inner radiation belt electrons with kinetic energy above 1 MeV

TitleMeasurement of inner radiation belt electrons with kinetic energy above 1 MeV
Publication TypeJournal Article
Year of Publication2015
AuthorsSelesnick, RS
JournalJournal of Geophysical Research: Space Physics
Volume120
Issue10
Pagination8339 - 8349
Date Published10/2015
Keywordselectrons; Inner zone; Radiation belt
AbstractData from the Proton-Electron Telescope on the Solar, Anomalous, and Magnetospheric Particle Explorer (SAMPEX) satellite, taken during 1992–2009, are analyzed for evidence of inner radiation belt electrons with kinetic energy E > 1 MeV. It is found that most of the data from a detector combination with a nominal energy threshold of 1 MeV were, in fact, caused by a chance coincidence response to lower energy electrons or high-energy protons. In particular, there was no detection of inner belt or slot region electrons above 1 MeV following the 2003 Halloween storm injection, though they may have been present. However, by restricting data to a less-stable, low-altitude trapping region, a persistent presence of inner belt electrons in the energy range 1 to 1.6 MeV is demonstrated. Their soft, exponential energy spectra are consistent with extrapolation of lower energy measurements.
URLhttp://doi.wiley.com/10.1002/2015JA021387http://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2F2015JA021387
DOI10.1002/2015JA021387
Short TitleJ. Geophys. Res. Space Physics


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