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Development of the ZnS(Ag)/BC-408 phoswich detector for monitoring radioactive contamination inside pipes  

Kim, Gye-Hong (Korea Atomic Energy Research Institute)
Park, Chan-Hee (Korea Atomic Energy Research Institute)
Jung, Chong-Hun (Korea Atomic Energy Research Institute)
Lee, Kune-Woo (Korea Atomic Energy Research Institute)
Seo, Bum-Kyoung (Korea Atomic Energy Research Institute)
Publication Information
Journal of Radiation Protection and Research / v.31, no.3, 2006 , pp. 123-128 More about this Journal
Abstract
A small radiation detection system is necessary for the direct characterization of alpha/beta-ray contamination inside pipes generated during the decommission of a nuclear facility. In this work, the new type phoswich detector consisting of the ZnS(Ag) and plastic scintillator for ${\alpha}/{\beta}$ simultaneous counting was designed as part of a development of a equipment capable of monitoring radiological contamination inside pipes. The optimum counting conditions in dimensions of scintillator and a detection system were experimentally confirmed and a performance of alpha/beta-ray discrimination was evaluated. As a result, optimum conditions of a detector suitable for monitoring radiological contamination inside pipes and a feasibility of application to pipe-inside were confirmed.
Keywords
contamination level inside pipe; phoswich detector; alpha/beta-ray discrimination; scintillator;
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