Speaker
Yi Jia
(Massachusetts Inst. of Technology (US))
Description
We report on the observation of new properties of secondary cosmic rays Li, Be, and B measured in the rigidity (momentum per unit charge) range 1.9 GV to 3.3 TV with a total of 5.4 million nuclei collected by AMS during the first five years of operation aboard the International Space Station. The Li and B fluxes have an identical rigidity dependence above 7 GV and all three fluxes have an identical rigidity dependence above 30 GV with the Li/Be flux ratio of 2.0±0.1. The three fluxes deviate from a single power law above 200 GV in an identical way. This behavior of secondary cosmic rays has also been observed in the AMS measurement of primary cosmic rays He, C, and O but the rigidity dependences of primary cosmic rays and of secondary cosmic rays are distinctly different. In particular, above 200 GV, the secondary cosmic rays harden more than the primary cosmic rays.
Primary authors
Alberto Oliva
(Centro de Investigaciones Energéti cas Medioambientales y Tecno)
Alexandre Ghelfi
(Centre National de la Recherche Scientifique (FR))
Amaresh Datta
(University of Hawai'i at Manoa (US))
Andrea Contin
(Universita e INFN, Bologna (IT))
Andreas Bachlechner
(Rheinisch Westfaelische Tech. Hoch. (DE))
Andrei Kounine
(Massachusetts Inst. of Technology (US))
Bastian Beischer
(Rheinisch Westfaelische Tech. Hoch. (DE))
Benoit Jean-Albert Coste
(Universita e INFN, Padova (IT))
Bilge Demirkoz
(Middle East Technical University (TR))
Bruna Bertucci
(Universita e INFN, Perugia (IT))
Carlos Delgado Mendez
(Centro de Investigaciones Energéti cas Medioambientales y Tecno)
Cen Zhang
(Institute of High Energy Physics, Chinese Academy Sciences)
Chan Hoon Chung
(Rheinisch Westfaelische Tech. Hoch. (DE))
Claudio Corti
(University of Hawai'i at Manoa (US))
Corinne Goy
(Centre National de la Recherche Scientifique (FR))
Cristina Consolandi
(University of Hawai'i at Manoa (US))
Davide Grandi
(Universita & INFN, Milano-Bicocca (IT))
Domenico D'Urso
(Universita e INFN, Perugia (IT))
Fernando De Carvalho Barao
(LIP Laboratorio de Instrumentacao e Fisica Experimental de Part)
Francesca Giovacchini
(Centro de Investigaciones Energéti cas Medioambientales y Tecno)
Francesco Dimiccoli
(Universita e INFN, Padova (IT))
Giovanni Ambrosi
(Universita e INFN, Perugia (IT))
Giuseppe La Vacca
(Universita & INFN, Milano-Bicocca (IT))
Henning Gast
(Rheinisch Westfaelische Tech. Hoch. (DE))
Hesheng Chen
(Chinese Academy of Sciences (CN))
Hsin-Yi Chou
(National Central University (TW))
Hu Liu
(Massachusetts Inst. of Technology (US))
Iris Gebauer
(KIT - Karlsruhe Institute of Technology (DE))
Javier Berdugo Perez
(Centro de Investigaciones Energéti cas Medioambientales y Tecno)
Jie Feng
(Academia Sinica (TW))
Jorge Casaus
(Centro de Investigaciones Energéti cas Medioambientales y Tecno)
Laurent Yves Marie Derome
(Centre National de la Recherche Scientifique (FR))
Manuel Aguilar-Benitez
(Cent.de Investigac.Energeticas Medioambientales y Tecnol. (CIEMAT))
Manuela Vecchi
(Universidade de Sao Paulo (BR))
Marco Incagli
(INFN Sezione di Pisa, Universita' e Scuola Normale Superiore, P)
Matteo Boschini
(Univ. degli Studi Milano-Bicocca (IT))
Matteo Duranti
(Universita e INFN, Perugia (IT))
Mr
Matthew Daniel Behlmann
(Massachusetts Inst. of Technology (US))
Maura Graziani
(KIT - Karlsruhe Institute of Technology (DE))
Melanie Heil
(Massachusetts Inst. of Technology (US))
Mercedes Paniccia
(Universite de Geneve (CH))
Miguel Angel Velasco Frutos
(Centro de Investigaciones Energéti cas Medioambientales y Tecno)
Mike Capell
(Massachusetts Inst. of Technology (US))
Nikolas Zimmermann
(Rheinisch Westfaelische Tech. Hoch. (DE))
Paolo Zuccon
(Massachusetts Inst. of Technology (US))
Philip Von Doetinchem
(University of Hawaii at Manoa)
Qi Yan
(Massachusetts Inst. of Technology (US))
Roberto Battiston
(Univ + INFN)
Sadakazu Haino
(Academia Sinica (TW))
Senquan Lu
(Academia Sinica (TW))
Stefan Schael
(Rheinisch Westfaelische Tech. Hoch. (DE))
Stefan Zeissler
(KIT - Karlsruhe Institute of Technology (DE))
Stefano Della Torre
(Universita & INFN, Milano-Bicocca (IT))
Stefano Di Falco
(Universita & INFN Pisa (IT))
Travis Gordon Nelson
Ulrich Becker
(Massachusetts Inst. of Technology (US))
Valerio Formato
(Universita e INFN, Perugia (IT))
Veronica Bindi
(University of Hawai'i at Manoa (US))
Weiwei Xu
(Massachusetts Inst. of Technology (US))
Wim De Boer
(KIT - Karlsruhe Institute of Technology (DE))
Xudong Cai
(Massachusetts Inst. of Technology (US))
Yuan-Hann Chang
(National Central University (TW))
Dr
Zhicheng Tang
(Chinese Academy of Sciences (CN))
Zhili Weng
(Massachusetts Inst. of Technology (US))
Zuhao Li
(Chinese Academy of Sciences (CN))
Vitaly Choutko
(Massachusetts Inst. of Technology (US))
