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Published 1999 | Published
Book Section - Chapter Open

Updated Semiempirical Cross Sections for Cosmic Rays Propagation

Abstract

High precision cross sections estimates are crucial to help infer the source abundance of elements and isotopes that have large secondary components in the arriving cosmic-ray abundances, e.g., N, Na, Al and P. We propose here correction factors to further refine our recent semiempirical cross sections estimates. Factors for elements that are nearly purely secondary, e.g, B and F, are also proposed for improved propagation calculations. We also point to some inconsistencies in the measured cross sections. The nucleus-nucleus component, including scaling factors, as well as a non-nuclear contribution to the inelastic cross section therein are also discussed.

Additional Information

© University of Utah. Provided by the NASA Astrophysics Data System. The work has been supported by NASA grants NAG5-5053 and NAG5-5165, and NASA-JOVE grant no. NAG8- 1208 (AFB). The authors are also grateful for the use of computer facilities at the Na val Research Laboratory, Washington, D.C.

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