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

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...

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Detalles Bibliográficos
Autores principales: Aguilar, M, Cavasonza, L Ali, Allen, M S, Alpat, B, Ambrosi, G, Arruda, L, Attig, N, Barao, F, Barrin, L, Bartoloni, A, Başeğmez-du Pree, S, Battiston, R, Behlmann, M, Beranek, B, Berdugo, J, Bertucci, B, Bindi, V, Bollweg, K, Borgia, B, Boschini, M J, Bourquin, M, Bueno, E F, Burger, J, Burger, W J, Burmeister, S, Cai, X D, Capell, M, Casaus, J, Castellini, G, Cervelli, F, Chang, Y H, Chen, G M, Chen, G R, 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, Delgado, C, Della Torre, S, Demirköz, M B, Derome, L, Di Falco, S, Di Felice, V, Díaz, C, Dimiccoli, F, von Doetinchem, P, Dong, F, Donnini, F, Duranti, M, Egorov, A, Eline, A, Feng, J, Fiandrini, E, Fisher, P, Formato, V, Freeman, C, Galaktionov, Y, Gámez, C, García-López, R J, Gargiulo, C, Gast, H, Gervasi, M, Giovacchini, F, Gómez-Coral, D M, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Haino, S, Han, K C, Hashmani, R K, He, Z H, Heber, B, Hsieh, T H, Hu, J Y, Incagli, M, Jang, W Y, Jia, Yi, Jinchi, H, Kanishev, K, Khiali, B, Kim, G N, Kirn, Th, Konyushikhin, M, Kounina, O, Kounine, A, Koutsenko, V, Kuhlman, A, Kulemzin, A, La Vacca, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H T, Lee, S C, Li, J Q, Li, M, Li, Q, Li, S, Li, J H, Li, Z H, Liang, J, Light, C, Lin, C H, Lippert, T, Liu, J H, Liu, Z, Lu, S Q, Lu, Y S, Luebelsmeyer, K, Luo, J Z, Luo, Xi, Lyu, S S, Machate, F, Mañá, C, Marín, J, Marquardt, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca-Rocha, A, Meng, Q, Mikhailov, V V, Mo, D C, Molero, M, Mott, P, Mussolin, L, Negrete, J, Nikonov, N, Nozzoli, F, Oliva, A, Orcinha, M, Palermo, M, Palmonari, F, Paniccia, M, Pashnin, A, Pauluzzi, M, Pensotti, S, Phan, H D, Piandani, R, Plyaskin, V, Poluianov, S, Qin, X, Qu, Z Y, Quadrani, L, Rancoita, P G, Rapin, D, Conde, A Reina, Robyn, E, Rosier-Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Schael, S, Schulz von Dratzig, A, Schwering, G, Seo, E S, Shakfa, Z, Shan, B S, Siedenburg, T, Solano, C, Song, J W, Song, X J, Sonnabend, R, Strigari, L, Su, T, Sun, Q, Sun, Z T, Tacconi, M, Tang, X W, Tang, Z C, Tian, J, Ting, Samuel C C, Ting, S M, Tomassetti, N, Torsti, J, Tüysüz, C, Urban, T, Usoskin, I, Vagelli, V, Vainio, R, Valencia-Otero, M, Valente, E, Valtonen, E, Vázquez Acosta, M, Vecchi, M, Velasco, M, Vialle, J P, Wang, C X, Wang, L, Wang, L Q, Wang, N H, Wang, Q L, Wang, S, Wang, X, Wang, Yu, Wang, Z M, Wei, J, Weng, Z L, Wu, H, Xiong, R Q, Xu, W, Yan, Q, Yang, Y, Yashin, I I, Yi, H, Yu, Y M, Yu, Z Q, Zannoni, M, Zhang, C, Zhang, F, Zhang, F Z, Zhang, J H, Zhang, Z, Zhao, F, Zheng, C, Zheng, Z M, Zhuang, H L, Zhukov, V, Zichichi, A, Zuccon, P
Lenguaje:eng
Publicado: 2021
Materias:
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.126.081102
http://cds.cern.ch/record/2757354
Descripción
Sumario: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 $^{\textrm{F/Si}}_{\textrm{B/O}}$ 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.

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