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Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), E-28040 Madrid, Spain.
INFN Sezione di Perugia, I-06100 Perugia, Italy and Università di Perugia, I-06100 Perugia, Italy.
Phys Rev Lett. 2014 Nov 28;113(22):221102. doi: 10.1103/PhysRevLett.113.221102. Epub 2014 Nov 26.
We present a measurement of the cosmic ray (e^{+}+e^{-}) flux in the range 0.5 GeV to 1 TeV based on the analysis of 10.6 million (e^{+}+e^{-}) events collected by AMS. The statistics and the resolution of AMS provide a precision measurement of the flux. The flux is smooth and reveals new and distinct information. Above 30.2 GeV, the flux can be described by a single power law with a spectral index γ=-3.170±0.008(stat+syst)±0.008(energy scale).
我们基于对阿尔法磁谱仪(AMS)收集的1060万个(正电子+电子)事例的分析,给出了0.5 GeV至1 TeV能量范围内宇宙射线(正电子+电子)通量的测量结果。AMS的统计数据和分辨率提供了通量的精确测量。该通量是平滑的,并揭示了新的独特信息。在30.2 GeV以上,通量可以用单一幂律描述,谱指数γ = -3.170±0.008(统计+系统误差)±0.008(能量刻度)。