Properties of Heavy Secondary Fluorine Cosmic Rays: Results from the Alpha Magnetic Spectrometer

作者：M. Aguilar, L. Ali Cavasonza, Matthew S. Allen, B. Alpat, G. Ambrosi, L. Arruda, N. Attig, F. Barão, L. Barrin, A. Bartoloni, Seth Pree, R. Battiston, M. Behlmann, B. Beranek, J. Berdugo, B. Bertucci, V. Bindi, K. Bollweg, B. Borgia, M. Boschini, M. Bourquin, E. F. Bueno, J.D. Burger, W. J. Burger, S. Burmeister, Xudong Cai, M. Capell, J. Casaus, G. Castellini, F. Cervelli, Yuan-Hann Chang, G. M. Chen, G. R. Chen, Hanze Chen, Y. Chen, Lin Cheng, H. Y. Chou, S. Chouridou, V. Choutko, C. H. Chung, C. Clark, G. Coignet, C. Consolandi, A. Contin, C. Corti, Z. Cui, S. Kokou Dadzie, C. Delgado, S. Della Torre, B. Demirköz, L. Derome, S. Di Falco, V. Di Felice, C. Díaz, F. Dimiccoli, P. von Doetinchem, Fei Dong, F. Donnini, M. Duranti, A. I. Egorov, A. Eline, J. H. Feng, E. Fiandrini, P.H. Fisher, V. Formato, C. Freeman, Yu. Galaktionov, C. Gámez, R. J. Garcı́a López, Corrado Gargiulo, H. Gast, M. Gervasi, F. Giovacchini, D. M. Gómez-Coral, J. Gong, C. Goy, Varlen Grabski, D. Grandi, M. Graziani, S. Haino, K. C. Han, R. K. Hashmani, Z. H. He, B. Heber, Timothy H. Hsieh, Jiayu Hu, M. Incagli, W. Jang, Yi Jia, H. Jinchi, K. Kanishev, B. Khiali, G. N. Kim, Th. Kirn, M. Konyushikhin, O. Kounina, A. Kounine, V. Koutsenko, A. Kuhlman, A. Kulemzin, G. La Vacca, E. Laudi, G. Laurenti, I. Lazzizzera, A. Lebedev, H. T. Lee, S. C. Lee, J. Q. Li, M. Li, Q. Li, S. Li, J. H. Li, Z. H. Li, Juncheng Liang, Christopher Light, Chao‐Hung Lin, Thomas Lippert, J. H. Liu, Zhen Liu, S. Q. Lu, Yudong Lu, K. Luebelsmeyer, Junzhou Luo, Xi Luo, Shaoyu Lyu, F. Machate, C. Mañá, J. Marín, J. Marquardt, T. Martin, G. Martı́nez, N. Masi, D. Maurin, A. Menchaca-Rocha, Q. Meng, V. V. Mikhailov, Dong-Chuan Mo, M. Molero, P. Mott, L. Mussolin, J. Negrete, N. Nikonov, F. Nozzoli, A. Oliva, M. Orcinha, M. Palermo, F. Palmonari, M. Paniccia, A. Pashnin, M. Pauluzzi, S. Pensotti, H. D. Phan, R. Piandani, V. Plyaskin, Stepan Poluianov, X. Qin, Z. Y. Qu, L. Quadrani, P.G. Rancoita, D. Rapin, A. Reina Conde, E. Robyn, S. Rosier-Lees, A. Rozhkov, D. Rozza, R. Z. Sagdeev, S. Schael, A. Schulz von Dratzig, G. Schwering, E. S. Seo, Z. Shakfa, B. S. Shan, T. Siedenburg, C. Solano, Jiwei Song, Xiaojian Song, R. Sonnabend, Louis E. Strigari, T. Su, Qie Sun, Z. T. Sun, M. Tacconi, Xiao Tang, Zhi-Cheng Tang, Jie Tian, Samuel C.C. Ting, S.M. Ting, Nicola Tomassetti, J. Torsti, Cenk Tüysüz, T. Urban, Ilya Usoskin, V. Vagelli, Rami Vainio, M. Valencia-Otero, E. Valente, E. Valtonen, M. Vázquez Acosta, M. Vecchi, M. Velasco, J. P. Vialle, C. X. Wang, L. Wang, L. Q. Wang, H. Wang, Qiuliang Wang, S. Wang, X. Wang, Yu Wang, Z. M. Wang, Chuncheng Wei, Z. Weng, H. Wu, R. Q. Xiong, W. Xu, Qi Yan, Y. Yang, I. I. Yashin, Han Yi, Yangyi Yu, Z. Q. Yu, M. Zannoni, C. Zhang, F. Zhang, F. Z. Zhang, J. H. Zhang, Zi-Yan Zhang, Fengyi Zhao, C. Zheng, Z. M. Zheng, H. L. Zhuang, V. Zhukov, A. Zichichi, P. Zuccon · 发表于：Physical Review Letters · 年份：2021 · DOI：10.1103/physrevlett.126.081102 · 被引用次数：48 · 研究领域：Dark Matter and Cosmic Phenomena、Astrophysics and Cosmic Phenomena、Atmospheric Ozone and Climate

Precise knowledge of the charge and rigidity dependence of the secondary cosmic ray fluxes and the secondary-to-primary flux ratios is essential in the understanding of cosmic ray propagation. We report the properties of heavy secondary cosmic ray fluorine F in the rigidity R range 2.15 GV to 2.9 TV based on 0.29 million events collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. The fluorine spectrum deviates from a single power law above 200 GV. The heavier secondary-to-primary F/Si flux ratio rigidity dependence is distinctly different from the lighter B/O (or B/C) rigidity dependence. In particular, above 10 GV, the F/Si/B/O ratio can be described by a power law R^{δ} with δ=0.052±0.007. This shows that the propagation properties of heavy cosmic rays, from F to Si, are different from those of light cosmic rays, from He to O, and that the secondary cosmic rays have two classes.