PoS - Proceedings of Science
Volume 358 - 36th International Cosmic Ray Conference (ICRC2019) - CRD - Cosmic Ray Direct
Using Z<=2 data to constrain cosmic ray propagation models
J. Wu* and Y. Wang
Full text: pdf
Pre-published on: September 27, 2019
Published on: July 02, 2021
The boron-to-carbon ratio is usually used to investigate cosmic ray transport processes. However, the results based on the boron-to-carbon ratio remains unclear. In this work, we employ other
secondary-to-primary ratios including the deuteron-to-helium 4 ratio, the helium 3-to-helium 4 ratio and the antiproton-to-proton ratio measured by recent experiments to constrain cosmic ray propagation models. Statistical tools are interfaced with the GALPROP package to perform the analysis. Both the force-field approximation and a time-, charge-, and rigidity-dependent solar
modulation model are considered to better explore the systematic uncertainties caused by solar effect. The estimated propagation parameters are compared with those derived by using the boronto-
carbon ratio to help us further understand the cosmic ray propagation mechanisms.
DOI: https://doi.org/10.22323/1.358.0155
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