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TRAPPED proton fluxes at low earth orbits measured by the PAMELA experiment
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.ORCID iD: 0000-0001-7011-7229
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Number of Authors: 61
2015 (English)In: Astrophysical Journal Letters, ISSN 2041-8205, Vol. 799, no 1, L4- p.Article in journal (Refereed) Published
Abstract [en]

We report an accurate measurement of the geomagnetically trapped proton fluxes for kinetic energy above similar to 70 MeV performed by the PAMELA mission at low Earth orbits (350 divided by 610 km). Data were analyzed in the frame of the adiabatic theory of charged particle motion in the geomagnetic field. Flux properties were investigated in detail, providing a full characterization of the particle radiation in the South Atlantic Anomaly region, including locations, energy spectra, and pitch angle distributions. PAMELA results significantly improve the description of the Earth's radiation environment at low altitudes, placing important constraints on the trapping and interaction processes, and can be used to validate current trapped particle radiation models.

Place, publisher, year, edition, pages
2015. Vol. 799, no 1, L4- p.
Keyword [en]
astroparticle physics, atmospheric effects, cosmic rays, elementary particles, magnetic fields, space vehicles
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:kth:diva-160385DOI: 10.1088/2041-8205/799/1/L4ISI: 000348143500004ScopusID: 2-s2.0-84921417409OAI: diva2:790925
Swedish National Space BoardSwedish Research Council

QC 20150226

Available from: 2015-02-26 Created: 2015-02-19 Last updated: 2015-02-26Bibliographically approved

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Carlson, PerPearce, Mark
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