Propagation of Light Elements in the Galaxy

Details Propagation of Light Elements in the Galaxy Propagation of Light Elements in the Galaxy

2003-06-17

arxiv.org/abs/astro-ph/0306349v1

Proc. 28th ICRC Tsukuba, 2003, pp.1917-1920

Astronomy and Astrophysics

Astrophysics

4 pages, 6 ps-figures, tsukuba.sty, to appear in the Proc. 28th International Cosmic Ray Conference (Tsukuba, Japan 2003). Mor

Scientific paper

The origin and evolution of isotopes of the lightest elements H2, He3, 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 Be10 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<6 using the numerical propagation code GALPROP and updated production cross sections.

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