title: Preparation of paper scintillator for detecting 3H contaminant.
abstract: Liquid scintillator (LS)-encapsulated silica was prepared by the sol-gel method and then was added dropwise onto a wipe paper to form a paper scintillator. First, the efficiencies of wipe were determined for both the paper scintillator and the wipe paper using a liquid scintillation counter (LSC). The efficiencies of wipe using the paper scintillator and the wipe paper were 88 and 36 %, respectively. The detection efficiencies were 5.5 % for the paper scintillator, 46 % for the wipe paper using an LS and 0.08 % for the (3)H/(14)C survey meter, respectively, compared with that of a melt-on scintillator of 47 %. Second, an (3)H contaminant on the paper scintillator was successfully detected using a photomultiplier without an LSC or an (3)H/(14)C survey meter. Finally, the paper scintillator was able to detect beta rays of the (3)H contaminant easily without an LS.
authors.affiliation: Radioisotope Research Center, The University of Tokushima, 3-18-15 Kuramoto-cho, Tokushima 770-8503, Japan.
authors.forename: Hirokazu
authors.initials: H
authors.lastname: Miyoshi
authors.forename: Toshiji
authors.initials: T
authors.lastname: Ikeda
mesh_terms: D001610:Beta Particles; D006859:Hydrogen / Q000032:analysis*; D012588:Scintillation Counting / Q000295:instrumentation*; D012822:Silicon Dioxide / Q000737:chemistry*
chemical_list: D012822:Silicon Dioxide; D006859:Hydrogen