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Reentrant albedo proton fluxes measured by the PAMELA experiment
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2015 (English)In: Journal of Geophysical Research - Space Physics, ISSN 2169-9380, E-ISSN 2169-9402, Vol. 120, no 5, 3728-3738 p.Article in journal (Refereed) Published
Abstract [en]

We present a precise measurement of downward going albedo proton fluxes for kinetic energy above similar to 70 MeV performed by the Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics (PAMELA) experiment at an altitude between 350 and 610 km. On the basis of a trajectory tracing simulation, the analyzed protons were classified into quasi-trapped, concentrating in the magnetic equatorial region, and untrapped spreading over all latitudes, including both short-lived (precipitating) and long-lived (pseudotrapped) components. In addition, features of the penumbra region around the geomagnetic cutoff were investigated in detail. PAMELA results significantly improve the characterization of the high-energy albedo proton populations at low-Earth orbits.

Place, publisher, year, edition, pages
2015. Vol. 120, no 5, 3728-3738 p.
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Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:kth:diva-171912DOI: 10.1002/2015JA021019ISI: 000357869600033ScopusID: 2-s2.0-84934937728OAI: diva2:845357
Swedish National Space BoardSwedish Research Council

QC 20150811

Available from: 2015-08-11 Created: 2015-08-10 Last updated: 2015-08-11Bibliographically approved

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Pearce, Mark
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Particle and Astroparticle Physics
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