A study of the primary cosmic ray composition in the energy range 5.10(14)-5.10(15) eV is performed through the analysis of the deep underground muons and of the e.m. component of Extensive Air Showers detected in coincidence by the MACRO and EAS-TOP experiments at the Gran Sasso Laboratory. We conclude that: a) pure proton and Iron primary beams are excluded by the experimental data; b) a fraction of nuclei heavier than Helium is necessary to explain the experimental data both below and above the knee; c) a mixed composition, obtained a priori from extrapolations of the spectra directly measured below 100 TeV, yields a reasonable account of the observations up to the knee of the primary spectrum.

STUDY OF THE PRIMARY COSMIC-RAY COMPOSITION AROUND THE KNEE OF THE ENERGY-SPECTRUM

CEI, FABRIZIO;NICOLO', DONATO;
1994

Abstract

A study of the primary cosmic ray composition in the energy range 5.10(14)-5.10(15) eV is performed through the analysis of the deep underground muons and of the e.m. component of Extensive Air Showers detected in coincidence by the MACRO and EAS-TOP experiments at the Gran Sasso Laboratory. We conclude that: a) pure proton and Iron primary beams are excluded by the experimental data; b) a fraction of nuclei heavier than Helium is necessary to explain the experimental data both below and above the knee; c) a mixed composition, obtained a priori from extrapolations of the spectra directly measured below 100 TeV, yields a reasonable account of the observations up to the knee of the primary spectrum.
Aglietta, M; Alessandro, B; Antonioli, P; Arneodo, F; Bergamasco, L; Bertaina, M; Fauth, Ac; Castagnoli, C; Castellina, A; Cattadori, C; Chiavassa, A; Cini, G; Piazzoli, Bd; Disciascio, G; Fulgione, W; Galeotti, P; Ghia, Pl; Iacovacci, M; Mannocchi, G; Melagrana, C; Morello, C; Navarra, G; Riccati, L; Saavedra, O; Trinchero, Gc; Vallania, P; Vernetto, S; Ahlen, S; Ambrosio, M; Antolini, R; Auriemma, G; Baker, R; Baldini, A; Barbarino, Gc; Barish, Bc; Battistoni, G; Bellotti, R; Bemporad, C; Bernardini, P; Bilokon, H; Bisi, V; Bloise, C; Bower, C; Bussino, S; Cafagna, F; Calicchio, M; Campana, D; Carboni, M; Cecchini, S; Cei, Fabrizio; Chiarella, V; Cormack, R; Corona, A; Coutu, S; Decataldo, G; Dekhissi, H; Demarzo, C; Demitri, L; Devincenzi, M; Dicredico, A; Diehl, E; Erriquez, O; Favuzzi, C; Ficenec, D; Forti, C; Fusco, P; Giacomelli, G; Giannini, G; Giglietto, N; Goretti, M; Grassi, M; Green, P; Grillo, A; Guarino, F; Guarnaccia, P; Gustavino, C; Habig, A; Hanson, K; Heinz, R; Hong, Jt; Iarocci, E; Katsavounidis, E; Kearns, E; Klein, S; Kyriazopoulou, S; Lamanna, E; Lane, C; Levin, Ds; Lipari, P; Liu, G; Liu, R; Longo, Mj; Lu, Y; Ludlam, G; Mancarella, G; Mandrioli, G; Margiottaneri, A; Marin, A; Marini, A; Martello, D; Chiesa, Am; Matteuzzi, P; Mazziotta, Mn; Michael, Dg; Mikheyev, S; Miller, L; Mittelbrun, M; Monacelli, P; Montaruli, T; Monteno, M; Mufson, S; Musser, J; Nicolo', Donato; Nolty, R; Nutter, S; Okada, C; Osteria, G; Palamara, O; Parlati, S; Patera, V; Patrizii, L; Pavesi, B; Pazzi, R; Peck, Cw; Petrakis, J; Petrera, S; Pignatano, Nd; Pistilli, P; Raino, A; Reynoldson, J; Ronga, F; Sanzani, G; Sanzgiri, A; Sartogo, F; Satriano, C; Satta, L; Scapparone, E; Scholberg, K; Sciubba, A; Lugaresi, Ps; Severi, M; Sitta, M; Spinelli, P; Spinetti, M; Spurio, M; Steele, J; Steinberg, R; Stone, Jl; Sulak, Lr; Surdo, A; Tarle, G; Togo, V; Valente, V; Walter, Cw; Webb, R; Worstell, W.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11568/174497
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