プラスチックシンチレータを液体シンチレーションカウンターに用いた14C と 35S の識別

概要

論文の詳細を見る
Spectra for pure-beta nuclides with liquid scintillator by using a liquid scintillation counter (LSC) are usually shifted to low energy region caused by optical and chemical quenching processes. So the end-point of LSC spectrum does not show the theoretical maximum beta-ray energy (Emax). On the other hand, the end points of the spectra of 14C and 35S showed their Emax, when a plastic scintillator (PS) was used for measurement as a substitute for a liquid scintillator. Therefore, the possibility of identification of 14C and 35S with plastic scintillator applied to conventional liquid scintillation counter is the aim of this study. Spectra could be measured with good reproducibility. Moreover the reusability of the PS rinsed within a day or covered with a thin film was also confirmed.
日本放射線安全管理学会の論文