Production of cosmogenic Be isotope in the atmosphere: Full 3-D modeling
نویسندگان
چکیده
[1] We present a physical model to calculate production of cosmogenic isotope Be in the atmosphere. The model is based on a full Monte Carlo simulation of an electromagneticmuon-nucleonic cascade in the atmosphere, using CORSIKA and FLUKA packages. The present results are in broad agreement with earlier empirical and semiempirical models but predict higher production rate than some recent theoretical models. A comparison to direct and indirect measurements of the Be production rate in the atmosphere confirms the validity of the model in the whole range of geographical latitudes and altitudes. Results of the full Monte Carlo simulation are tabulated in a form of the yield function. These tables are given together with a detailed recipe, which allows a user to compute easily the isotope production for given location, altitude, and the spectrum of cosmic rays. An effect of a severe solar energetic particle event of January 2005 is estimated, providing a new tool for tracing of mass transport. Citation: Usoskin, I. G., and G. A. Kovaltsov (2008), Production of cosmogenic Be isotope in the atmosphere: Full 3-D modeling, J. Geophys. Res., 113, D12107, doi:10.1029/2007JD009725.
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