Autor: Masarik, J.; Beer, J.
Názov: Simulation of particle fluxes and cosmogenic nuclide production in the Earth's atmosphere
Typ: publication
Dátum: 1999
Jazyk: en
Poznámka:
Abstrakt:
A purely physical model for the simulation of cosmic ray particle interactions
with the Earth's atmosphere and subsequent production and transport of secondary particles
is presented. Neutron and proton spectra as a function of the coordinate in the atmosphere
were calculated using a GEANT / MCNP-based code system. The calculated neutron
fluxes are in good agreement with experimental data based on neutron monitor measure-ments.
These fluxes, together with experimental or evaluated cross sections, were used to
calculate the production rates of ³H, ⁷Be, ¹⁰Be, ¹⁴C, and ³⁶Cl. The dependencies of these
production rates on solar activity and geomagnetic field intensity were investigated in detail.
The obtained production rates agree well with most published experimental and theo-retical
values. Possible reasons for some differences are discussed.
Download: