Propagation of Light Elements in the Galaxy
نویسندگان
چکیده
The origin and evolution of isotopes of the lightest elements H, He, Li, Be, B in the universe is a key problem in such fields as astrophysics of CR, Galactic evolution, non-thermal nucleosynthesis, and cosmological studies. One of the major sources of these species is spallation by CR nuclei in the interstellar medium. On the other hand, it is the B/C ratio in CR and Be abundance which are used to fix the propagation parameters and thus the spallation rate. We study the production and Galactic propagation of isotopes of elements Z ≤ 5 using the numerical propagation code GALPROP and updated production cross sections.
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