Abstract
The radioactivity of fine papers has been studied through γ-ray spectroscopy with an intrinsic Ge detector. Samples of paper from European and North American sources were found to contain very different amounts of 226Rat and 232Th. The processes which introduce radionuclides into paper are discussed. The radioactivity from fine papers makes only a small contibution to an individual's annual radiation dose; nevertheless it is easily detectable and perhaps, avoidable.
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