METHOD OF MEASUREMENT OF emanation Radon-222 in soils

摘要

method u0438u0437u043cu0435u0440u0435u043du0438u00a0 coefficient u044du043cu0430u043du0438u0440u043eu0432u0430u043du0438u00a0 radon - 222 in u043fu043eu0447u0432u043eu0433u0440u0443u043du0442u0430u0445, based on the measurement of the volume activity of radon - 222, specific activity u0440u0430u0434u0438u00a0 - 226, u043fu043bu043eu0442u043du043eu0441u0442 and the porosity of soil, u043eu0442u043bu0438u0447u0430u044eu0449u0438u0439u0441u00a0, at the same time u0438u0437u043cu0435u0440u00a0u044eu0442 3d radon activity in two sites located on the u0440u0430u0441u0441u0442u043eu00a0u043du0438u0438 from 0.2 to 1 m from each other. the measurement at one point u043fu0440u043eu0438u0437u0432u043eu0434u00a0u0442 depth h, 0,2 to 0.5 m, and the other at a depth h2 = 2h1, with u043eu043fu0440u0435u0434u0435u043bu00a0u044eu0442 specific activity u0440u0430u0434u0438u00a0 - 226, density and porosity of soil samples collected in the same locations, and then hop u0440u0435u0434u0435u043bu00a0u044eu0442 u044du043cu0430u043du0438u0440u043eu0432u0430u043du0438u00a0 coefficient formula;where a1 is u043eu0431u044au0435u043cu043du0430u00a0 activity of radon at a depth h, bq / m3;;a2 - u043eu0431u044au0435u043cu043du0430u00a0 activity of radon at a depth of 2h1, bq / m3;;u0430Ra - u0443u0434u0435u043bu044cu043du0430u00a0 activity 226Ra in ground, bq / kg;;s is the density of solid particles of soil, kg / m3.;is the porosity of soil, rh. ed.