A1 Refereed original research article in a scientific journal
Properties of Cosmic Lithium Isotopes Measured by the Alpha Magnetic Spectrometer
Authors: Aguilar, M.; Ambrosi, G.; Anderson, H.; Arruda, L.; Attig, N.; Bagwell, C.; Barao, F.; Barbanera, M.; Barrin, L.; Bartoloni, A.; Battiston, R.; Bayyari, A.; Belyaev, N.; Bertucci, B.; Bindi, V.; Bollweg, K.; Bolster, J.; Borchiellini, M.; Borgia, B.; Boschini, M. J.; Bourquin, M.; Brugnoni, C.; Burger, J.; Burger, W. J.; Burzilla, N.; Cai, X. D.; Capell, M.; Casaus, J.; Castellini, G.; Cervelli, F.; Chang, Y. H.; Chen, G. M.; Chen, G. R.; Chen, H.; Chen, H. S.; Chen, Y.; Cheng, L.; Chou, H. Y.; Chouridou, S.; Choutko, V.; Chung, C. H.; Clark, C.; Coignet, G.; Consolandi, C.; Contin, A.; Corti, C.; Cui, Z.; Dadzie, K.; D'Angelo, F.; Dass, A.; Delgado, C.; Della Torre, S.; Demirkoz, M. B.; Derome, L.; Di Falco, S.; Di Felice, V.; Diaz, C.; Dimiccoli, F.; von Doetinchem, P.; Dong, F.; Duranti, M.; Egorov, A.; Eline, A.; Faldi, F.; Fehr, D.; Feng, J.; Fiandrini, E.; Fisher, P.; Formato, V.; Garcia-Lopez, R. J.; Gargiulo, C.; Gast, H.; Gervasi, M.; Giovacchini, F.; Gomez-Coral, D. M.; Gong, J.; Grandi, D.; Graziani, M.; Haino, S.; Han, K. C.; He, Z. H.; Heber, B.; Hernandez-Nicolas, F.; Hsieh, T. H.; Hu, J. Y.; Huang, B. W.; Ionica, M.; Incagli, M.; Jia, Yi; Jinchi, H.; Karagoz, G.; Kirn, Th.; Klipfel, A. P.; Kounina, O.; Kounine, A.; Koutsenko, V.; Krasnopevtsev, D.; Kuhlman, A.; Kulemzin, A.; La Vacca, G.; Laudi, E.; Laurenti, G.; LaVecchia, G.; Lazzizzera, I.; Lee, H. T.; Lee, S. C.; Li, H. L.; Li, J. H.; Li, J. Q.; Li, M.; Li, M.; Li, Q.; Li, Q.; Li, Q. Y.; Li, S. L.; Li, Z. H.; Liang, M. J.; Liao, P.; Lin, C. H.; Lippert, T.; Liu, J. H.; Liu, P. C.; Liu, Z.; Lu, S. Q.; Luo, J. Z.; Luo, Q.; Luo, S. D.; Luo, Xi; Mana, C.; Marin, J.; Marquardt, J.; Martinez, G.; Masi, N.; Maurin, D.; Medvedeva, T.; Menchaca-Rocha, A.; Meng, Q.; Mikhailov, V. V.; Molero, M.; Mott, P.; Mussolin, L.; Jozani, Y. Najafi; Nicolaidis, R.; Nikonov, N.; Nozzoli, F.; Ocampo-Peleteiro, J.; Oliva, A.; Orcinha, M.; Palmonari, F.; Paniccia, M.; Pashnin, A.; Pauluzzi, M.; Pelosi, D.; Pensotti, S.; Pietzcker, P.; Plyaskin, V.; Poluianov, S.; Pridohl, D.; Qu, Z. Y.; Quadrani, L.; Rancoita, P. G.; Rapin, D.; Conde, A. Reina; Robyn, E.; Rodriguez-Garcia, I.; Romaneehsen, L.; Rossi, F.; Rozhkov, A.; Rozza, D.; Sagdeev, R.; Schael, S.; von Dratzig, A. Schultz; Schwering, G.; Seo, E. S.; Shan, B. S.; Shukla, A.; Siedenburg, T.; Siemko, A.; Silvestre, G.; Song, J. W.; Song, X. J.; Sonnabend, R.; Strigari, L.; Su, T.; Sun, Q.; Sun, Z. T.; Tabarroni, L.; Tacconi, M.; Tang, Z. C.; Tian, J.; Tian, Y.; Ting, Samuel C. C.; Ting, S. M.; Tomassetti, N.; Torsti, J.; Turk, B.; Ubaldi, A.; Urban, T.; Usoskin, I.; Vagelli, V.; Vainio, R.; Vaisanen, P.; Valencia-Otero, M.; Valente, E.; Valtonen, E.; Acosta, M. Vazquez; Vecchi, M.; Velasco, M.; Wang, C. X.; Wang, J. C.; Wang, L.; Wang, L. Q.; Wang, N. H.; Wang, Q. L.; Wang, S.; Wang, X.; Wang, Z. M.; Wei, J.; Weng, Z. L.; Wu, H.; Wu, Y.; Wu, Z. B.; Xiao, J. N.; Xiong, R. Q.; Xiong, X. Z.; Xu, W.; Yan, Q.; Yang, H. T.; Yang, Y.; Yi, H.; You, Y. H.; Yu, Y. M.; Yu, Z. Q.; Zhang, C.; Zhang, F. Z.; Zhang, J.; Zhang, J. H.; Zhang, Z.; Zhao, P. W.; Zheng, C.; Zheng, Z. M.; Zhuang, H. L.; Zhukov, V.; Zichichi, A.; Zuberi, M.; Zuccon, P.; AMS Collaboration
Publisher: AMER PHYSICAL SOC
Publishing place: COLLEGE PK
Publication year: 2025
Journal: Physical Review Letters
Journal name in source: PHYSICAL REVIEW LETTERS
Journal acronym: PHYS REV LETT
Article number: 201001
Volume: 134
Issue: 20
Number of pages: 8
ISSN: 0031-9007
eISSN: 1079-7114
DOI: https://doi.org/10.1103/PhysRevLett.134.201001
Web address : https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.134.201001
Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/499096602
We present the first measurement of cosmic-ray fluxes of Li-6 and Li-7 isotopes in the rigidity range from 1.9 to 25 GV. The measurements are based on 9.7 x 10(5) 6Li and 1.04 x 10(6) 7Li nuclei collected by the Alpha Magnetic Spectrometer on the International Space Station from May 2011 to October 2023. We observe that over the entire rigidity range the Li-6 and Li-7 fluxes exhibit nearly identical time variations and, above similar to 4 GV, the time variations of Li-6, Li-7, He, Be, B, C, N, and O fluxes are identical. Above similar to 7 GV, we find an identical rigidity dependence of the Li-6 and Li-7 fluxes. This shows that they are both produced by collisions of heavier cosmic-ray nuclei with the interstellar medium and, in particular, excludes the existence of a sizable primary component in the Li-7 flux.
Downloadable publication This is an electronic reprint of the original article. |  |
Funding information in the publication:
Acknowledgments—We are grateful for important physics discussions with Igor Moskalenko and Subir Sarkar. We
thank former NASA Administrator Daniel S. Goldin for his dedication to the legacy of the ISS as a scientific laboratory and his decision for NASA to fly AMS as a DOE payload. We also acknowledge the continuous support of the NASA
leadership, particularly Ken Bowersox and of the JSC and MSFC flight control teams that have allowed AMS to operate optimally on the ISS for over 13 years. We are grateful for the support of Regina Rameika and Glen
Crawford of the DOE including resources from the National Energy Research Scientific Computing Center under Contract No. DE-AC02-05CH11231. We gratefully acknowledge the strong support from CERN including
Fabiola Gianotti and the CERN IT department. We also acknowledge the continuous support from MIT and its School of Science, Nergis Mavalvala, and the Laboratory for Nuclear Science, Boleslaw Wyslouch. Research supported by: Chinese Academy of Sciences, Institute of High Energy Physics, National Natural Science Foundation (NSFC), and Ministry of Science and Technology, National Key R&D Program Grants No. 2022YFA1604802 and No. 2022YFA1604803, NSFC Grant No. 12275158, and Grant No. 12305119, the China Scholarship Council, Shandong University, and the Shandong Institute of Advanced Technology, China; Research Council of Finland, Project No. 321882, and Finnish Academy of Sciences and Letters, Grant No. 301123, Finland; CNRS/IN2P3 and CNES, France; DLR under Grant No. 50OO1803 and computing support on the JARA Partition of the RWTH Aachen supercomputer, Germany; INFN and ASI under ASI-INFN Agreement No. 2021-43-HH.0, and ASI-University of Perugia Agreement No. 2019-2-HH.0, and the Italian Ministry of University and Research (MUR) through the program “Dipartimenti di Eccellenza 2023-2027” (Grant SUPERC), Italy; the Consejo Nacional de Humanidades, Ciencias y Tecnologías (CONAHCYT) under Grant No. CF-2019/2042 and UNAM, Mexico; NWO under Grant No. 680-1-004, Netherlands; FCT under Grant No. 2024.00992.CERN, Portugal; CIEMAT, IAC, CDTI, MCIN-AEI, and ERDF under Grants No. PID2022-137810NB-C21/C22, No. PCI2023-145945-2, No. PCI2023-145961-2, No. CEX2019-000920-S, and No. JDC2022-049705-I, Spain; the Fondation Dr. Manfred Steuer and the Fondation Ernst et Lucie Schmidheiny, Switzerland; Academia Sinica, the National Science and Technology Council (NSTC), formerly the Ministry of Science and Technology (MOST), under Grants No. 111-2123-M-001- 004 and No. 111-2112-M-006-029, High Education Sprout Project by the Ministry of Education at National Cheng Kung University, Taiwan; the Turkish Energy, Nuclear and Mineral Research Agency (TENMAK) under Grant No. 2020TAEK(CERN)A5.H1.F5-26, Türkiye; and NSF Grant No. 2013228 and ANSWERS proposals No. 2149809, No. 2149810, and No. 2149811, LWS NASA Grant/Cooperative Agreement No. 80NSSC20K1819, and FINESST NASA Grant No. 80NSSC21K1392 U.S. Research was also supported by INFN and ASI under ASI-INFN Agreement No. 2019- 19-HH.0 and its amendments, Italy.
