PROJECT TITLE :
Pilot Study of the Application of Plastic Scintillation Microspheres to Rn-222 Detection and Measurement
This work demonstrates that when plastic scintillation microspheres (PSms) synthesized from polystyrene are exposed to in air or water, they concentrate in their volume. A theoretical model, based on the answer of the diffusion equation is developed, in order to describe the sorption and desorption processes in PSms. A macroscopic quantity termed “sampling efficiency” is employed to quantify the absorption properties of the PSms. The sampling efficiency is estimated by exposure of PSms to in air and water. Estimates of the counting efficiency for measurement of the exposed PSms by industrial scintillation counters are presented. The results show that polystyrene PSms are simultaneously good samplers and detectors of . These properties indicate that sensitive approaches for the measurement of based on absorption and scintillation counting of PSms will be developed.
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