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：457

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

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 117卷 / 23期

基金：

瑞士国家科学基金会; 巴西圣保罗研究基金会; 美国国家科学基金会; 芬兰科学院;

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.

引用

页数：8

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