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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
AMS collaboration
2016
发表期刊PHYSICAL REVIEW LETTERS
卷号117期号:23页码:231102
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螖 with index 螖=-0.333卤0.014(fit)卤0.005(syst), in good agreement with the Kolmogorov theory of turbulence which predicts 螖=-1/3 asymptotically. 漏 2016 authors. Published by the American Physical Society.
文章类型Journal article (JA)
DOI10.1103/PhysRevLett.117.231102
语种英语
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被引频次:48[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/260709
专题粒子天体物理中心
作者单位中国科学院高能物理研究所
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AMS collaboration. 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[J]. PHYSICAL REVIEW LETTERS,2016,117(23):231102.
APA AMS collaboration.(2016).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.PHYSICAL REVIEW LETTERS,117(23),231102.
MLA AMS collaboration."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".PHYSICAL REVIEW LETTERS 117.23(2016):231102.
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