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High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5-500 GeV with the Alpha Magnetic Spectrometer on the International Space Station
AMS Collaboration
2014
发表期刊PHYSICAL REVIEW LETTERS
卷号113期号:12
通讯作者Accardo, L (reprint author), Ist Nazl Fis Nucl, Sez Perugia, I-06100 Perugia, Italy.
摘要A precision measurement by AMS of the positron fraction in primary cosmic rays in the energy range from 0.5 to 500 GeV based on 10.9 million positron and electron events is presented. This measurement extends the energy range of our previous observation and increases its precision. The new results show, for the first time, that above similar to 200 GeV the positron fraction no longer exhibits an increase with energy.
关键词TIME-OF-FLIGHT AMS RICH DETECTOR FAST TRIGGER DARK-MATTER IDENTIFICATION ELECTRONS PROTOTYPE SPECTRUM MODELS ORIGIN
学科领域Physics
DOI10.1103/PhysRevLett.113.121101
收录类别SCI
语种英语
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000345773700005
引用统计
被引频次:228[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/311005/213825
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. High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5-500 GeV with the Alpha Magnetic Spectrometer on the International Space Station[J]. PHYSICAL REVIEW LETTERS,2014,113(12).
APA AMS Collaboration.(2014).High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5-500 GeV with the Alpha Magnetic Spectrometer on the International Space Station.PHYSICAL REVIEW LETTERS,113(12).
MLA AMS Collaboration."High Statistics Measurement of the Positron Fraction in Primary Cosmic Rays of 0.5-500 GeV with the Alpha Magnetic Spectrometer on the International Space Station".PHYSICAL REVIEW LETTERS 113.12(2014).
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