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

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

doi:10.3103/S1062873809050104

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.

Positrons and electrons in primary cosmic rays as measured in the PAMELA experiment / Adriani, O; Bazilevskaya, G.A.; Barbarino, G.C.; Bellotti, R.; Boezio, M.; Bogomolov, E.A.; Bonechi, L.; Bongi, M.; Bonvicini, V.; Borisov, S.V.; Bottai, S.; Bruno, A.; Cafagna, F.; Campana, D.; Carlson, P.; Casolino, M.; Castellini, G.; Pascale, M.P.; Rosa, G.; Fedele, D.; Felice, V.; Galper, A.M.; Grishantseva, L.A.; Hofverberg, P.; Leonov, A.A.; Koldashov, S.V.; Krutkov, S.Yu.; Kvashnin, A.N.; Malvezzi, V.; Marcelli, L.; Menn, W.; Mikhailov, V.V.; Minori, M.; Mocchiutti, E.; Orsi, S.; Osteria, G.; Papini, P.; Pearce, M.; Picozza, P.; Ricci, M.; Ricciarini, S.B.; Simon, M.; Simone, N.; Sparvoli, R.; Spillantini, P.; Stozhkov, Yu.I.; Taddei, E.; Vacchi, A.; Vannuccini, E.; Vasil'Ev, G.V.; Voronov, S.A.; Yurkin, Yu.T.; Zampa, G.; Zampa, N.; Zverev, V.G.. - In: BULLETIN OF THE RUSSIAN ACADEMY OF SCIENCES. PHYSICS. - ISSN 1062-8738. - ELETTRONICO. - 73:(2009), pp. 568-570. [10.3103/S1062873809050104]