Abstract

AbstractRadioactive noble gas isotopes considered in this chapter are fission products of uranium and plutonium, neutron activation products of calcium or radon isotopes belonging to the natural decay chains of uranium and thorium. The measurement of radon isotopes and decay products is important as these radionuclides represent a significant health hazard. The measurement of the other noble gas is of paramount interest for the detection or monitoring of both civil and nuclear activities. The decay data of the main noble gas radionuclides of interest are reported, and noble gas absorption phenomena in plastic polymers are described in detail. Then general applications of plastic scintillators in noble gas atmospheric measurement systems are described. Eventually, specific aspects of radon measurement using plastic scintillators are detailed. This concerns the shape of alpha peaks and the application of alpha/beta discrimination to the measurement of radon and their radioactive progenies.

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