Abstract
Nuclear interactions of protons and helium ions accelerated in solar flares with solar atmosphere are simulated using Geant4 toolkit.The long term average spectrum of solar cosmic rays is taken from measurements of cosmogenic isotopes production in lunar soil. Solar atmospheric profiles of 6Li, 7Li and 14C generation are calculated. These isotopes outflow into interplanetary space with coronal mass ejections and following implantation into lunar rocks are considered to explain anomaly isotopic composition of thin lunar surface layer. Also, generated energy spectra and angular distributions of neutrons, gamma- and x-rays in space are presented for different spectra of solar flares.
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