Energy spectrum of cosmic protons and helium nuclei by a hybrid measurement at 4300 m a.s.l
- Autori: B. Bartoli; BERNARDINI, Paolo; X. J. Bi; I. Bolognino; P. Branchini; A. Budano; A. K. Calabrese Melcarne; P. Camarri; Z. Cao; R. Cardarelli; S. Catalanotti; S. Z. Chen; T. L. Chen; P. Creti; S. W. Cui; B. Z. Dai; D'AMONE, ANTONIO; Danzengluobu; DE MITRI, Ivan; B. D'Ettorre Piazzoli; T. Di Girolamo; G. Di Sciascio; C. F. Feng; Zhaoyang Feng; Zhenyong Feng; Q. B. Gou; Y. Q. Guo; H. H. He; Haibing Hu; Hongbo Hu; M. Iacovacci; R. Iuppa; H. Y. Jia; Labaciren; H. J. Li; G. Liguori; C. Liu; J. Liu; M. Y. Liu; H. Lu; L. L. Ma; X. H. Ma; MANCARELLA, Giovanni; S. M. Mari; MARSELLA, GIOVANNI; MARTELLO, Daniele; S. Mastroianni; P. Montini; C. C. Ning; PANAREO, Marco; B. Panico; PERRONE, Lorenzo; P. Pistilli; F. Ruggieri; P. Salvini; R. Santonico; S. N. Sbano; P. R. Shen; X. D. Sheng; F. Shi; A. Surdo; Y. H. Tan; P. Vallania; S. Vernetto; C. Vigorito; H. Wang; C. Y. Wu; H. R. Wu; L. Xue; Q. Y. Yang; X. C. Yang; Z. G. Yao; A. F. Yuan; M. Zha; H. M. Zhang; L. Zhang; X. Y. Zhang; Y. Zhang; J. Zhao; Zhaxiciren, Zhaxisangzhu; X. X. Zhou; F. R. Zhu; Q. Q. Zhu; G. Zizzi; Y. X. Bai; M. J. Chen; Y. Chen; S. H. Feng; B. Gao; M. H. Gu; C. Hou; X. X. Li; J. Liu; J. L. Liu; X. Wang; G. Xiao; B. K. Zhang; S. S. Zhang; B. Zhou; X. Zuo
- Anno di pubblicazione: 2014
- Tipologia: Articolo in rivista
- OA Link: http://hdl.handle.net/10447/466612
Abstract
The energy spectrum of cosmic Hydrogen and Helium nuclei has been measured below the so-called knee by using a hybrid experiment with a wide field-of-view Cherenkov telescope and the Resistive Plate Chamber (RPC) array of the ARGO-YBJ experiment at 4300 m above sea level. The Hydrogen and Helium nuclei have been well separated from other cosmic ray components by using a multi-parameter technique. A highly uniform energy resolution of about 25% is achieved throughout the whole energy range (100-700 TeV). The observed energy spectrum is compatible with a single power law with index gamma = -2.63 +- 0.06.