EFFECT OF NATURAL FACTORS ON ~7Be ACTIVITY IN ATMOSPHERIC PRECIPITATION IN 2007 IN SAMARKAND

摘要

Cosmogenic ~7Be (half-life T_(1.2) = 54 days, E_γ = 478 keV) is formed in upper layers of the atmosphere in reactions where cosmic radiation splits the atoms in the air. The ~7Be atoms formed stick to aerosol particles and together with dry particles (dust, dew, hoarfrost, frost) and wet precipitation (rain, snow) fall onto the Earth's surface.rnThe ~7Be concentration in near-Earth space is largely determined by the solar component of the cosmic radiation, moving from the upper to the lower layers of the atmosphere - geophysical processes, fallout on the Earth's surface - dry and wet precipitation, the content in objects of the environment - soil erosion and formation of bottom deposits.