Ponente
Dimitrii Krasnopevtsev
(Massachusetts Inst. of Technology (US))
Descripción
Beryllium nuclei in cosmic rays are expected to be secondaries produced by the fragmentation of primary cosmic rays during their propagation in the Galaxy. Therefore, their fluxes contain essential information on cosmic ray propagation and sources. As the radioactive isotope 10Be decays to 10B with a half-life comparable to the cosmic-ray residence time in the Galaxy, the 10Be/9Be ratio can be used to measure the cosmic-ray propagation volume. Current measurements of the 10Be/9Be ratios are limited to energies below 2 GeV/n and are affected by large uncertainties. We present the unique measurement of the fluxes of 7Be, 9Be, and 10Be and their ratios across an extended energy range, based on 13.5 years of AMS data.
Autor primario
Dimitrii Krasnopevtsev
(Massachusetts Inst. of Technology (US))
