Positrons and electrons in primary cosmic rays as measured in the PAMELA experiment

O. Adriani, G. A. Bazilevskaya, G. C. Barbarino, R. Bellotti, M. Boezio, E. A. Bogomolov, L. Bonechi, M. Bongi, V. Bonvicini, S. V. Borisov, S. Bottai, A. Bruno, F. Cafagna, D. Campana, P. Carlson, M. Casolino, G. Castellini, M. P. Pascale, G. Rosa, D. FedeleV. Felice, A. M. Galper, L. A. Grishantseva, P. Hofverberg, A. A. Leonov, S. V. Koldashov, S. Yu Krutkov, A. N. Kvashnin, V. Malvezzi, L. Marcelli, W. Menn, V. V. Mikhailov, M. Minori, E. Mocchiutti, S. Orsi, G. Osteria, P. Papini, M. Pearce, P. Picozza, M. Ricci, S. B. Ricciarini, M. Simon, N. Simone, R. Sparvoli, P. Spillantini, Yu I. Stozhkov, E. Taddei, A. Vacchi, E. Vannuccini, G. V. Vasil'ev, S. A. Voronov, Yu T. Yurkin, G. Zampa, N. Zampa, V. G. Zverev

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3 Scopus citations


The PAMELA experiment is being carried out on board the Russian satellite Resurs DK1 placed in the near-earth near-polar orbit on June 15, 2006. The apparatus comprising a silicon-strip magnetic spectrometer and an electromagnetic calorimeter allows measurement of electron and positron fluxes in cosmic rays in a wide energy interval from ∼100 MeV to hundreds of GeV. The high-energy electron and positron separation technique is discussed and the data on positron-to-electron ratio in primary cosmic rays up to E ≃ 10 GeV from the 2006 - 2007 measurements are reported in this work.

Original languageEnglish
Pages (from-to)568-570
Number of pages3
JournalBulletin of the Russian Academy of Sciences: Physics
Issue number5
StatePublished - 2009
Externally publishedYes

Bibliographical note

Funding Information:
ACKNOWLEDGMENTS The Russian authors acknowledge the support of the Russian Foundation for Basic Research, projects no. 07-02-000922a and no. 06-02-16327.


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