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.
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Ptuskin, V.S., Soutoul, A. (1998). Cosmic-Ray Clocks. In: Russell, C.T., Mewaldt, R.A., Von Rosenvinge, T.T. (eds) The Advanced Composition Explorer Mission. Springer, Dordrecht. https://doi.org/10.1007/978-94-011-4762-0_11
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DOI: https://doi.org/10.1007/978-94-011-4762-0_11
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