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Secondary positrons and electrons in near-Earth space in the PAMELA experiment

  • Proceedings of the 34th All-Russian Conference on Cosmic Rays
  • Published:
Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

Fluxes of electrons and positrons with energies above ~100 MeV in the near-Earth space are measured with the PAMELA magnetic spectrometer aboard the Resurs DK-1 satellite launched on June 15, 2006, into a quasipolar orbit with an altitude of 350–600 km and an inclination of 70°. Calculating the trajectories of detected electrons and positrons in the magnetosphere of the Earth allows us to determine their origin and isolate particles produced during interaction between cosmic rays and the residual atmosphere. Spatial distributions of albedo, quasitrapped, and trapped (in the radiation belt) positrons and electrons are presented. The ratio of positron and electron fluxes suggests that the fluxes of trapped particles of the radiation belt and quasitrapped secondary particles have different mechanisms of formation.

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Correspondence to V. V. Mikhailov.

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Original Russian Text © V.V. Mikhailov, O. Adriani, G.A. Bazilevskaya, G.C. Barbarino, R. Bellotti, E.A. Bogomolov, M. Boezio, V. Bonvicini, M. Bongi, S. Bottai, A. Bruno, A. Vacchi, E. Vannuccini, G.I. Vasilyev, S.A. Voronov, A.M. Galper, C. De Santis, V. Di Felice, G. Zampa, N. Zampa, M. Casolino, D. Campana, A.V. Karelin, P. Carlson, G. Castellini, F. Cafagna, A.A. Kvashnin, A.N. Kvashnin, S.V. Koldashov, S.A. Koldobskiy, S.Y. Krutkov, A.A. Leonov, A.G. Mayorov, V.V. Malakhov, M. Martucci, L. Marcelli, W. Menn, M. Merge, E. Mocchiutti, A. Monaco, N. Mori, R. Munini, G. Osteria, B. Panico, P. Papini, P. Picozza, M. Pearce, M. Ricci, S.B. Ricciarini, M.F. Runtso, M. Simon, R. Sparvoli, P. Spillantini, Y.I. Stozhkov, Y.T. Yurkin, 2017, published in Izvestiya Rossiiskoi Akademii Nauk, Seriya Fizicheskaya, 2017, Vol. 81, No. 2, pp. 222–224.

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Mikhailov, V.V., Adriani, O., Bazilevskaya, G.A. et al. Secondary positrons and electrons in near-Earth space in the PAMELA experiment. Bull. Russ. Acad. Sci. Phys. 81, 203–205 (2017). https://doi.org/10.3103/S1062873817020289

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  • DOI: https://doi.org/10.3103/S1062873817020289

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