Development of a GdSiO (GPS) Scintillator-Based Alpha Imaging Detector for Rapid Plutonium Detection in High-Radon Environments

Yuki Morishita*, Kenji Izaki, Junichi H. Kaneko, Seiichi Yamamoto, Mikio Higuchi, Tatsuo Torii

*この研究の対応する著者

研究成果: Article査読

4 被引用数 (Scopus)

抄録

We developed a Gd2Si2O7 (GPS) scintillator-based alpha imaging detector and demonstrated its effectiveness by evaluating the actual Pu particle and 222Rn progeny. The GPS scintillator plate was prepared by a sintering method. The outer dimensions of the GPS scintillator plate were $5\times 5$ cm, and the scintillator layer was approximately $50~\mu \text{m}$ on a 3-mm-thick high-transparency glass. The plate was optically coupled to a position-sensitive photomultiplier tube (Hamamatsu H8500, Hamamatsu, Japan) with silicone grease. The developed imaging detector exhibited good uniformity; Pu particle activities were accurately evaluated at 14 different positions and the difference in activity was within ±6%. The radon-222 progeny counts were reduced by 65.3% by applying an energy window. Although the Pu/222Rn progeny activity ratio was 1/51, the Pu particle was successfully identified among the 222Rn progeny within the 5-min measurement time. The imaging detector has an excellent ability for detecting Pu among the 222Rn progeny. Thus, this detector is useful for alpha contamination monitoring in high-radon-background environments.

本文言語English
論文番号9162144
ページ(範囲)2203-2208
ページ数6
ジャーナルIEEE Transactions on Nuclear Science
67
10
DOI
出版ステータスPublished - 2020 10月
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 原子力エネルギーおよび原子力工学
  • 電子工学および電気工学

フィンガープリント

「Development of a GdSiO (GPS) Scintillator-Based Alpha Imaging Detector for Rapid Plutonium Detection in High-Radon Environments」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル