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

被引:460
作者
Aguilar, M. [31 ]
Cavasonza, L. Ali [1 ,2 ]
Ambrosi, G. [36 ]
Arruda, L. [29 ]
Attig, N. [24 ,25 ]
Aupetit, S. [19 ,20 ]
Azzarello, P. [18 ]
Bachlechner, A. [1 ,2 ]
Barao, F. [29 ]
Barrau, A. [19 ,20 ]
Barrin, L. [17 ]
Bartoloni, A. [41 ]
Basara, L. [39 ]
Pree, S. Basegmez-du [8 ]
Battarbee, M. [49 ]
Battiston, R. [39 ,40 ]
Becker, U. [11 ]
Behlmann, M. [11 ]
Beischer, B. [1 ,2 ]
Berdugo, J. [31 ]
Bertucci, B. [36 ,37 ]
Bindel, K. F. [26 ]
Bindi, V. [22 ]
Boella, G. [33 ,34 ]
de Boer, W. [26 ]
Bollweg, K. [23 ]
Bonnivard, V. [19 ,20 ]
Borgia, B. [41 ,42 ]
Boschini, M. J. [33 ]
Bourquin, M. [18 ]
Bueno, E. F. [43 ]
Burger, J. [11 ]
Cadoux, F. [18 ]
Cai, X. D. [11 ]
Capell, M. [11 ]
Caroff, S. [4 ,5 ]
Casaus, J. [31 ]
Castellini, G. [16 ]
Cervelli, F. [38 ]
Chae, M. J. [44 ]
Chang, Y. H. [12 ]
Chen, A. I. [11 ]
Chen, G. M. [8 ]
Chen, H. S. [8 ]
Cheng, L. [45 ]
Chou, H. Y. [12 ]
Choumilov, E. [11 ]
Choutko, V. [11 ]
Chung, C. H. [1 ,2 ]
Clark, C. [23 ]
机构
[1] Rhein Westfal TH Aachen, Phys Inst, D-52056 Aachen, Germany
[2] Rhein Westfal TH Aachen, JARA FAME, D-52056 Aachen, Germany
[3] Middle East Tech Univ, Dept Phys, TR-06800 Ankara, Turkey
[4] Univ Savoie Mont Blanc, Lab Annecy Le Vieux Phys Particules, F-74941 Annecy Le Vieux, France
[5] Univ Savoie Mont Blanc, CNRS, IN2P3, F-74941 Annecy Le Vieux, France
[6] Beihang Univ BUAA, Beijing 100191, Peoples R China
[7] Chinese Acad Sci, IEE, Beijing 100190, Peoples R China
[8] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
[9] INFN Sezione Bologna, I-40126 Bologna, Italy
[10] Univ Bologna, I-40126 Bologna, Italy
[11] MIT, Cambridge, MA 02139 USA
[12] NCU, Chungli 32054, Tao Yuan, Taiwan
[13] Univ Maryland, East West Ctr Space Sci, College Pk, MD 20742 USA
[14] Univ Maryland, IPST, College Pk, MD 20742 USA
[15] Kyungpook Natl Univ, CHEP, Daegu 41566, South Korea
[16] CNR, IROE, I-50125 Florence, Italy
[17] CERN, European Org Nucl Res, CH-1211 Geneva 23, Switzerland
[18] Univ Geneva, DPNC, CH-1211 Geneva 4, Switzerland
[19] CNRS, IN2P3, LPSC, F-38026 Grenoble, France
[20] Univ Grenoble Alpes, F-38026 Grenoble, France
[21] Sun Yat Sen Univ, Guangzhou 510275, Guangdong, Peoples R China
[22] Univ Hawaii, Dept Phys & Astron, Honolulu, HI 96822 USA
[23] NASA, Johnson Space Ctr, Jacobs Engn & Business Integra, Houston, TX 77058 USA
[24] Julich Supercomp Ctr, D-52425 Julich, Germany
[25] Res Ctr Julich, JARA FAME, D-52425 Julich, Germany
[26] Karlsruhe Inst Technol, Inst Expt Kernphys, D-76128 Karlsruhe, Germany
[27] IAC, E-38205 San Cristobal la Laguna, Spain
[28] Univ La Laguna, Dept Astrofis, E-38206 Tenerife, Spain
[29] Lab Instrumentacao Fis Expt Particulas LIP, P-1000 Lisbon, Portugal
[30] NCSIST, Taoyuan 32546, Taiwan
[31] CIEMAT, E-28040 Madrid, Spain
[32] Univ Nacl Autonoma Mexico, Inst Fis, Mexico City 01000, DF, Mexico
[33] Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20126 Milan, Italy
[34] Univ Milano Bicocca, I-20126 Milan, Italy
[35] Southeast Univ SEU, Nanjing 210096, Jiangsu, Peoples R China
[36] Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy
[37] Univ Perugia, I-06100 Perugia, Italy
[38] Ist Nazl Fis Nucl, Sez Pisa, I-56100 Pisa, Italy
[39] Ist Nazl Fis Nucl, TIFPA, I-38123 Trento, Italy
[40] Univ Trent, I-38123 Trento, Italy
[41] Ist Nazl Fis Nucl, Sez Roma 1, I-00185 Rome, Italy
[42] Univ Roma La Sapienza, I-00185 Rome, Italy
[43] Univ Sao Paulo, Inst Fis Sao Carlos, CP 369, BR-13560970 Sao Carlos, SP, Brazil
[44] Ewha Womans Univ, Dept Phys, Seoul 120750, South Korea
[45] Shandong Univ SDU, Jinan 250100, Shandong, Peoples R China
[46] Natl Cheng Kung Univ, Tainan 70101, Taiwan
[47] Acad Sinica Grid Ctr, Taipei 11529, Taiwan
[48] Acad Sinica, Inst Phys, Taipei 11529, Taiwan
[49] Univ Turku, Dept Phys & Astron, Space Res Lab, FI-20014 Turku, Finland
[50] ASI Sci Data Ctr ASDC, I-00133 Rome, Italy
基金
芬兰科学院; 巴西圣保罗研究基金会; 美国国家科学基金会; 瑞士国家科学基金会;
关键词
GEOMAGNETIC REFERENCE FIELD; REACTION CROSS-SECTION; ENERGY-SPECTRA; LIGHT-NUCLEI; RICH NUCLEI; AMS-02; DETECTOR; PROPAGATION; PERFORMANCE; GENERATION;
D O I
10.1103/PhysRevLett.117.231102
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
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 R. with index. Delta = -0.333 +/- 0.014(fit) +/- 0.005(syst), in good agreement with the Kolmogorov theory of turbulence which predicts. Delta = -1/3 asymptotically.
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页数:8
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