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Radiation Protection Dosimetry, 1994
Abstract Information available 20 years ago suggested that unusual soil conditions were needed to produce high radon concentrations in houses. Based on this belief, simple models were developed to predict house radon concentrations based on estimates of soil radium concentration and soil type (related to permeability).
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Containment of radon-222 in the radon laboratory

Nuclear Instruments and Methods in Physics Research, 1984
Abstract Nuclear track detection, scintillation counter surface monitoring, and radon assaying have been used to locate sites of low-level 226 Ra contamination in a radon laboratory. Procedures instituted to contain the radon emanated from this contamination have been effective to the extent of a 7-fold reduction in the air-borne radon concentration
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The Radon Transform

2009
For a given function f defined in the plane, which may represent, for instance, the attenuation-coefficient function in a cross section of a sample, the fundamental question of image reconstruction calls on us to consider the value of the integral of f along a typical line l t , θ.
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Radon in the environment [PDF]