Energy spectra of trapped electrons and positrons with E > 50 MeV measured by the PAMELA magnetic spectrometer
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Pre-published on:
July 22, 2019
Published on:
July 02, 2021
Abstract
Trapped electrons and positrons in the Earth inner radiation belt were observed by the PAMELA experiment on board Resurs DK satellite. The instrument consists of magnetic spectrometer, imaging electromagnetic calorimeter, time of fight system, anticoincidence and neutron detectors that provide unique particle identification and background rejection in wide energy range from ~50 MeV up to hundreds GeVs. PAMELA was collecting data since June 2006 till January 2016. The satellite orbit with 350-600km initial altitude and 70$^{0}$ inclination crosses the inner radiation belt in South Atlantic Anomaly at L-shell 1.2. The trajectories of trapped electrons and positrons in the Earth magnetic field were reconstructed by means of a trajectory tracing simulation. In this work PAMELA's spectral measurements are compared with those of other spacecraft and with theoretical predictions.
DOI: https://doi.org/10.22323/1.358.1122
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.