Speaker
cheng zhang
(Institute of high energy physics, Chinese Academy of Sciences)
Description
We report the properties of sodium (Na) cosmic rays in the rigidity range 2.15 GV to 3.0 TV with 0.46 million nuclei collected by the Alpha Magnetic Spectrometer experiment on the International Space Station. We observed that above 6 GV the Na flux is well described by the weighted sum of the silicon flux (primary cosmic rays) and the fluorine flux (secondary cosmic rays).
The fraction of primary component increases with rigidity and becomes dominant at highest rigidities. Na/Si abundance ratio at the source is determined independent of cosmic ray propagation models.
Keywords
Cosmic rays & astroparticles; Cosmic ray composition & spectra; Cosmic ray acceleration; Cosmic ray propagation; Cosmic ray sources
| Subcategory | Experimental Results |
|---|---|
| Collaboration | AMS |
Primary author
cheng zhang
(Institute of high energy physics, Chinese Academy of Sciences)
Co-authors
Zhen Liu
(University of Geneva)
For the AMS collaboration
