Propagation of cosmic rays: nuclear physics in cosmic-ray studies

Details Propagation of cosmic rays: nuclear physics in cosmic-ray studies Propagation of cosmic rays: nuclear physics in cosmic-ray studies

2004-11-15

arxiv.org/abs/astro-ph/0411400v1

AIP Conf.Proc. 769 (2005) 1612-1617

Astronomy and Astrophysics

Astrophysics

6 pages, 13 figures, aip style files. Invited review talk at the Int. Conf. on Nuclear Data-2004 (Santa Fe, Sep. 26 - Oct. 1,

Scientific paper

10.1063/1.1945315

The nuclei fraction in cosmic rays (CR) far exceeds the fraction of other CR species, such as antiprotons, electrons, and positrons. Thus the majority of information obtained from CR studies is based on interpretation of isotopic abundances using CR propagation models where the nuclear data and isotopic production cross sections in p- and alpha-induced reactions are the key elements. This paper presents an introduction to the astrophysics of CR and diffuse gamma rays and discusses some of the puzzles that have emerged recently due to more precise data and improved propagation models. Merging with cosmology and particle physics, astrophysics of CR has become a very dynamic field with a large potential of breakthrough and discoveries in the near future. Exploiting the data collected by the CR experiments to the fullest requires accurate nuclear cross sections.

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