Precision Measurement of the Boron to Carbon Flux Ratio in Cosmic Rays from 1.9 GV to 2.6 TV with the Alpha Magnetic Spectrometer on the International Space Station

Knowledge of the rigidity dependence of the boron to carbon flux ratio (B/C) is important in understanding the propagation of cosmic rays. The precise measurement of the B/C ratio from 1.9 GV to 2.6 TV, based on 2.3 million boron and 8.3 million carbon nuclei collected by AMS during the first 5 year...

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Detalles Bibliográficos
Autores principales: Aguilar, M, Ali Cavasonza, L, Alpat, B, Ambrosi, G, Arruda, L, Attig, N, Aupetit, S, Azzarello, P, Bachlechner, A, Barao, F, Barrau, A, Barrin, L, Bartoloni, A, Basara, L, Başeǧmez-du Pree, S, Battarbee, M, Battiston, R, Bazo, J, Becker, U, Behlmann, M, Beischer, B, Berdugo, J, Bertucci, B, Bindi, V, Boella, G, de Boer, W, Bollweg, K, Bonnivard, V, Borgia, B, Boschini, M  J, Bourquin, M, Bueno, E  F, Burger, J, Cadoux, F, Cai, X  D, Capell, M, Caroff, S, Casaus, J, Castellini, G, Cernuda, I, Cervelli, F, Chae, M  J, Chang, Y  H, Chen, A  I, Chen, G  M, Chen, H  S, Cheng, L, Chou, H  Y, Choumilov, E, Choutko, V, Chung, C  H, Clark, C, Clavero, R, Coignet, G, Consolandi, C, Contin, A, Corti, C, Coste, B, Creus, W, Crispoltoni, M, Cui, Z, Dai, Y  M, Delgado, C, Della Torre, S, Demirköz, M  B, Derome, L, Di Falco, S, Dimiccoli, F, Díaz, C, von Doetinchem, P, Dong, F, Donnini, F, Duranti, M, D'Urso, D, Egorov, A, Eline, A, Eronen, T, Feng, J, Fiandrini, E, Finch, E, Fisher, P, Formato, V, Galaktionov, Y, Gallucci, G, García, B, García-López, R  J, Gargiulo, C, Gast, H, Gebauer, I, Gervasi, M, Ghelfi, A, Giovacchini, F, Goglov, P, Gómez-Coral, D  M, Gong, J, Goy, C, Grabski, V, Grandi, D, Graziani, M, Guerri, I, Guo, K  H, Habiby, M, Haino, S, Han, K  C, He, Z  H, Heil, M, Hoffman, J, Hsieh, T  H, Huang, H, Huang, Z  C, Huh, C, Incagli, M, Ionica, M, Jang, W  Y, Jinchi, H, Kang, S  C, Kanishev, K, Kim, G  N, Kim, K  S, Kirn, Th, Konak, C, Kounina, O, Kounine, A, Koutsenko, V, Krafczyk, M  S, La Vacca, G, Laudi, E, Laurenti, G, Lazzizzera, I, Lebedev, A, Lee, H  T, Lee, S  C, Leluc, C, Li, H  S, Li, J  Q, Li, Q, Li, T  X, Li, W, Li, Z  H, Li, Z  Y, Lim, S, Lin, C  H, Lipari, P, Lippert, T, Liu, D, Liu, Hu, Lu, S  Q, Lu, Y  S, Luebelsmeyer, K, Luo, F, Luo, J  Z, Lv, S  S, Majka, R, Mañá, C, Marín, J, Martin, T, Martínez, G, Masi, N, Maurin, D, Menchaca-Rocha, A, Meng, Q, Mo, D  C, Morescalchi, L, Mott, P, Nelson, T, Ni, J  Q, Nikonov, N, Nozzoli, F, Nunes, P, Oliva, A, Orcinha, M, Palmonari, F, Palomares, C, Paniccia, M, Pauluzzi, M, Pensotti, S, Pereira, R, Picot-Clemente, N, Pilo, F, Pizzolotto, C, Plyaskin, V, Pohl, M, Poireau, V, Putze, A, Quadrani, L, Qi, X  M, Qin, X, Qu, Z  Y, Räihä, T, Rancoita, P  G, Rapin, D, Ricol, J  S, Rodríguez, I, Rosier-Lees, S, Rozhkov, A, Rozza, D, Sagdeev, R, Sandweiss, J, Saouter, P, Schael, S, Schmidt, S  M, Schulz von Dratzig, A, Schwering, G, Seo, E  S, Shan, B  S, Shi, J  Y, Siedenburg, T, Son, D, Song, J  W, Sun, W  H, Tacconi, M, Tang, X  W, Tang, Z  C, Tao, L, Tescaro, D, Ting, Samuel C  C, Ting, S  M, Tomassetti, N, Torsti, J, Türkoğlu, C, Urban, T, Vagelli, V, Valente, E, Vannini, C, Valtonen, E, Vázquez Acosta, M, Vecchi, M, Velasco, M, Vialle, J  P, Vitale, V, Vitillo, S, Wang, L  Q, Wang, N  H, Wang, Q  L, Wang, X, Wang, X  Q, Wang, Z  X, Wei, C  C, Weng, Z  L, Whitman, K, Wienkenhöver, J, Willenbrock, M, Wu, H, Wu, X, Xia, X, Xiong, R  Q, Xu, W, Yan, Q, Yang, J, Yang, M, Yang, Y, Yi, H, Yu, Y  J, Yu, Z  Q, Zeissler, S, Zhang, C, Zhang, J, Zhang, J  H, Zhang, S  D, Zhang, S  W, Zhang, Z, Zheng, Z  M, Zhu, Z  Q, Zhuang, H  L, Zhukov, V, Zichichi, A, Zimmermann, N, Zuccon, P
Lenguaje:eng
Publicado: 2016
Materias:
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.1103/PhysRevLett.117.231102
http://cds.cern.ch/record/2261135
Descripción
Sumario:Knowledge of the rigidity dependence of the boron to carbon flux ratio (B/C) is important in understanding the propagation of cosmic rays. The precise measurement of the B/C ratio from 1.9 GV to 2.6 TV, based on 2.3 million boron and 8.3 million carbon nuclei collected by AMS during the first 5 years of operation, is presented. The detailed variation with rigidity of the B/C spectral index is reported for the first time. The B/C ratio does not show any significant structures in contrast to many cosmic ray models that require such structures at high rigidities. Remarkably, above 65 GV, the B/C ratio is well described by a single power law RΔ with index Δ=-0.333±0.014(fit)±0.005(syst), in good agreement with the Kolmogorov theory of turbulence which predicts Δ=-1/3 asymptotically.

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