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Physics of Atomic Nuclei

, Volume 81, Issue 4, pp 515–519 | Cite as

Trapped Positrons and Electrons in the Inner Radiation Belt According to Data of the PAMELA Experiment

  • V. V. MikhailovEmail author
  • 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
  • Yu. V. Mikhailova
  • 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
Elementary Particles and Fields Experiment
  • 44 Downloads

Abstract

Measurements of secondary-electron and secondary-positron fluxes below the geomagnetic cutoff in near-Earth space were performed by means of the PAMELA magnetic spectrometer installed on board the Resurs-DK1 satellite launched on June 15, 2006, in an elliptical orbit of inclination 70° and altitude 350 to 600 km. This spectrometer permits measuring the fluxes of electrons and positrons over a wide energy range, as well as determining their spatial distributions to a precision of about 2°. A calculation of particle trajectories in the geomagnetic field makes it possible to separate electrons and positrons originating from cosmic-ray interactions in the Earth’s magnetosphere. The spatial distributions of quasitrapped, trapped, and short-lived albedo positrons and electrons of energy above 70 MeV in the radiation belt were analyzed. The ratio of the electron-to-positron fluxes and the energy spectra of the electrons and positrons in question are indicative of different productionmechanisms for stably trapped and quasitrapped secondary particles.

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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • V. V. Mikhailov
    • 1
    Email author
  • O. Adriani
    • 2
    • 3
  • G. A. Bazilevskaya
    • 4
  • G. C. Barbarino
    • 5
    • 6
  • R. Bellotti
    • 7
    • 8
  • E. A. Bogomolov
    • 9
  • M. Boezio
    • 10
  • V. Bonvicini
    • 10
  • M. Bongi
    • 2
    • 3
  • S. Bottai
    • 3
  • A. Bruno
    • 7
    • 8
  • A. Vacchi
    • 10
    • 11
  • E. Vannuccini
    • 3
  • G. I. Vasilyev
    • 9
  • S. A. Voronov
    • 1
  • A. M. Galper
    • 1
  • C. De Santis
    • 12
    • 13
  • V. Di Felice
    • 12
    • 14
  • G. Zampa
    • 10
  • N. Zampa
    • 10
  • M. Casolino
    • 12
  • D. Campana
    • 6
  • A. V. Karelin
    • 1
  • P. Carlson
    • 15
  • G. Castellini
    • 16
  • F. Cafagna
    • 8
  • A. A. Kvashnin
    • 4
  • A. N. Kvashnin
    • 4
  • S. V. Koldashov
    • 1
  • S. A. Koldobskiy
    • 1
  • S. Y. Krutkov
    • 9
  • A. A. Leonov
    • 1
  • A. G. Mayorov
    • 1
  • V. V. Malakhov
    • 1
  • M. Martucci
    • 13
    • 17
  • L. Marcelli
    • 13
  • W. Menn
    • 18
  • M. Merge
    • 12
    • 13
  • Yu. V. Mikhailova
    • 1
  • E. Mocchiutti
    • 10
  • A. Monaco
    • 7
    • 8
  • N. Mori
    • 3
  • R. Munini
    • 10
    • 19
  • G. Osteria
    • 6
  • B. Panico
    • 6
  • P. Papini
    • 3
  • P. Picozza
    • 12
    • 13
  • M. Pearce
    • 15
  • M. Ricci
    • 17
  • S. B. Ricciarini
    • 3
  • M. F. Runtso
    • 1
  • M. Simon
    • 18
  • R. Sparvoli
    • 12
    • 13
  • P. Spillantini
    • 1
  • Y. I. Stozhkov
    • 4
  • Y. T. Yurkin
    • 1
  1. 1.National Research Nuclear University MEPhIMoscowRussia
  2. 2.Dipartimento di Fisica, Piazza S. Marco 4Universita degli Studi di FirenzeFirenzeItaly
  3. 3.Istituto Nazionale di Fisica Nucleare, Sezione di FirenzeSesto FiorentinoItaly
  4. 4.Lebedev Physical InstituteRussian Academy of SciencesMoscowRussia
  5. 5.Dipartimento di FisicaUniversita degli Studi di Napoli Federico IINapoliItaly
  6. 6.Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Strada Comunale CintiaNapoliItaly
  7. 7.Dipartimento di Fisica, Piazza Umberto IUniversita degli Studi di Bari Aldo MoroBariItaly
  8. 8.Istituto Nazionale di Fisica Nucleare, Sezione di BariBariItaly
  9. 9.Ioffe Physical-Technical InstituteRussian Academy of SciencesSt. PetersburgRussia
  10. 10.Istituto Nazionale di Fisica Nucleare, Sezione di TriesteTriesteItaly
  11. 11.Dipartimento di Scienze Matematiche, Informatiche e Fisiche (DMIF)Universita degli Studi di UdineUdineItaly
  12. 12.Istituto Nazionale di Fisica Nucleare, “Tor Vergata”RomaItaly
  13. 13.Dipartimento di FisicaUniversita degli Studi di Roma “Tor Vergata”RomaItaly
  14. 14.Agenzia Spaziale Italiana (ASI) Science Data Center, Via del Politecnico, snc, Edificio DRomaItaly
  15. 15.KTH Royal Institute of Technology, Dipartimento di Fisica, and the Oskar Klein Centre for Cosmoparticle PhysicsAlbaNova University CentreStockholmSweden
  16. 16.Istituto di Fisica Applicata “Nello Carrara”Sesto FiorentinoItaly
  17. 17.Istituto Nazionale di Fisica NucleareLaboratori Nazionali di FrascatiFrascatiItaly
  18. 18.Department PhysikUniversität SiegenSiegenGermany
  19. 19.Dipartimento di FisicaUniversita degli Studi di TriesteTriesteItaly

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