Fluorescence pulses derived from thin poly (ethylene terephthalate) in response to charged particles

Hidehito Nakamura*, Kazuhiro Mori, Yoshiyuki Shirakawa

*この研究の対応する著者

研究成果: Article査読

抄録

Poly (ethylene terephthalate) (PET) is an abundant polyester used on a worldwide scale. Its versatility extends to radiation detection and measurements. Here, we show the attractive behaviours of thin PET in response to charged particles. The PET samples with 1-mm, 3-mm, 5-mm thicknesses were exposed to alpha particles from an 241Am radioactive source and beta particles from a 90Sr radioactive source and were monitored with a commercial photodetector. The acquired pulses were characterised by time profiles. Depending on the sample thickness, the averaged time profiles for each particle type were equivalent with regard to shape, despite variations in intensity. For the 1-mm-thick sample, the falling tails predominately followed an exponential decrease with decay times of 13.8 0.5 ns for alpha particles and 10.7 0.3 ns for beta particles. The leading edges increased exponentially, with rise times of 3.3 0.1 ns for both particle types. These results revealed that the PET fluorescence induced by charged particles leads to sharp pulses comparable to rapid detector responses. This knowledge opens up potential applications of thin PET to pulse measurements in the presence of charged particles.

本文言語English
論文番号125307
ジャーナルPhysica Scripta
96
12
DOI
出版ステータスPublished - 2021 12

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 数理物理学
  • 凝縮系物理学
  • 物理学および天文学(全般)

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