Source: Space Science Reviews, Volume 86, Numbers 1-4, 1998 , pp. 225-238(14)
Abstract:Secondary radioactive isotopes that are used for the determination of cosmic-ray age have relatively short decay lifetimes. The measured abundance of these isotopes at low energies is representative of the cosmic-ray diffusion and the gas distribution in a region of a few hundred parsecs around the Sun. We show how to determine the local cosmic-ray diffusion coefficient in the Galaxy using the data on decaying cosmic-ray nuclei. Calculated surviving fractions of decaying secondary isotopes in diffusion and leaky box models are presented.
Document Type: Regular Paper
Affiliations: 1: Institute for Terrestrial Magnetism, Ionosphere and Radio Wave Propagation (IZMIRAN) of the Russian Academy of Sciences, Troitsk, Moscow region 142092, Russia 2: Service d'Astrophysique, DAPNIA/SAp, CE Saclay, 91191 Gif-sur- Yvette, Cedex, France
Publication date: January 1, 1998