Precision Measurement of Cosmic Ray Deuterons with the Alpha Magnetic Spectrometer

Discussion timeslot (ZOOM-Meeting): 19. July 2021 - 18:00
ZOOM-Meeting URL: https://desy.zoom.us/j/91896950007
ZOOM-Meeting ID: 91896950007
ZOOM-Meeting Passcode: ICRC2021
Corresponding Session: https://icrc2021-venue.desy.de/channel/18-Cosmic-Ray-Secondary-nuclei-observations-and-impact-on-theories-CRD/71
Live-Stream URL: https://icrc2021-venue.desy.de/livestream/Discussion-06/7

Abstract:
'The Alpha Magnetic Spectrometer (AMS-02) has been operating aboard the International Space Station (ISS) since May 2011. Deuterons represent about 1% of the single-charged cosmic-ray nuclei. They are mainly produced by fragmentation reactions of primary cosmic 4He nuclei on the interstellar medium and represent a very sensitive tool to verify and constrain CR propagation models in the galaxy. Given the smaller cross-section for 4He- larger D with respect to C- larger B, the deuteron flux provides additional information about the propagation of cosmic rays compared to the cosmic B/C ratio. Precise particle rigidity and velocity measurements and a large acceptance enable separating deuterons from abundant protons in the rigidity range from 1.92 to 21.1 GV. Precision measurements of the deuteron flux obtained with a high-statistics data sample collected by the AMS-02 during its 8.5 years of operation on the International Space Station will be presented.'

Authors: Eduardo Ferronato Bueno
Co-Authors: Fernando Barão | Javier Berdugo | Carlos Delgado | Francesco Dimiccoli | Diego Gomez Coral | Manuela Vecchi | Paolo Zuccon | Philip von Doetinchem | For the AMS02 Collaboration
Collaboration: AMS

Indico-ID: 887
Proceeding URL: https://pos.sissa.it/395/113