Cosmic-ray positron fraction measurement from 1 to 30 GeV with AMS-01

Details Cosmic-ray positron fraction measurement from 1 to 30 GeV with AMS-01 Cosmic-ray positron fraction measurement from 1 to 30 GeV with AMS-01

2007-03-07

arxiv.org/abs/astro-ph/0703154v2

Phys.Lett.B646:145-154,2007

Astronomy and Astrophysics

Astrophysics

20 pages, Latex, 7 .eps figures

Scientific paper

10.1016/j.physletb.2007.01.024

A measurement of the cosmic ray positron fraction e+/(e+ + e-) in the energy
range of 1-30 GeV is presented. The measurement is based on data taken by the
AMS-01 experiment during its 10 day Space Shuttle flight in June 1998. A proton
background suppression on the order of 10^6 is reached by identifying converted
bremsstrahlung photons emitted from positrons.

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