Speaker
Description
Secondary cosmic ray (CR) measurements offer essential insights into galactic particle propagation mechanisms and interaction processes.
When primary CRs (e.g., carbon and oxygen nuclei) interact with the interstellar medium (ISM), they produce lighter secondary particles through fragmentation.
Among these secondaries, boron stands out as particularly abundant, making it an ideal tracer for studying CR propagation.
The DArk Matter Particle Explorer (DAMPE), operational since December 2015, features the deepest calorimeter among current space-based CR observatories, enabling direct spectral measurements up to hundreds of TeV.
The cosmic-ray boron spectrum and the B/C and B/O flux ratios are measured from 8.6 GeV/n to 5.5 TeV/n; the carbon and oxygen spectra and the C/O flux ratio results are extended to 4.2 PeV/n.
