Volume 501 - 39th International Cosmic Ray Conference (ICRC2025) - Cosmic-Ray Direct & Acceleration
Measurements of separate electron and positron spectra from 10 GeV to 20 GeV with DAMPE mission
Y. Nie*, Y. Wei, J. Zang  on behalf of the DAMPE Collaboration
*: corresponding author
Full text: pdf
Pre-published on: September 23, 2025
Published on: December 30, 2025
Abstract
The cosmic-ray (CR) electrons and positrons in space are of great significance for studying the
origin and propagation of cosmic-rays. The satellite-borne experiment DArk Matter Particle
Explorer (DAMPE) has been used to measure the separate electron and positron spectra, as well as
the positron fraction. In this work, the Earth’s magnetic field is used to distinguish CR electrons
and positrons, as the DAMPE detector does not carry an onboard magnet. The energy range for the
measurements is from 10 to 20 GeV, being currently limited at high energy by the zenith pointing
orientation of DAMPE. The results are consistent with previous measurements by AMS-02 and
PAMELA
DOI: https://doi.org/10.22323/1.501.0102
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