Precision measurement of the (e++e-) flux in primary cosmic rays from 0.5 GeV to 1 TeV with the alpha magnetic spectrometer on the international space station

AMS Collaboration, Liqiu Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

339 Citations (Scopus)

Abstract

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(energyscale).

Original languageEnglish
Article number221102
JournalPhysical Review Letters
Volume113
Issue number22
DOIs
Publication statusPublished - 26 Nov 2014
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy

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