X-ray detection properties of Bi-loaded plastic scintillators synthesized via solvent evaporation

Kei Kagami, Masanori Koshimizu, Yutaka Fujimoto, Shunji Kishimoto, Rie Haruki, Fumihiko Nishikido, Keisuke Asai

Research output: Contribution to journalArticlepeer-review

Abstract

Bi-loaded plastic scintillators were successfully synthesized using the solvent evaporation method and were used as detectors for synchrotron X-ray radiation. The photoluminescence emission spectra and X-ray-excited radioluminescence spectra of all prepared plastic scintillators presented broad emission bands in the range of 350–500 nm, which derived from the fluorescence of the organic phosphor, 2-(4-tert-butylphenyl)-5-(4-biphenylyl)-1,3,4-oxadiazole. The detection efficiency of 1 mm thick plastic scintillators for high-energy X-ray photons was increased by the addition of Bi compounds (up to 2.3 wt%) and reached 67% of that of EJ-256, the commercially available Pb 5 wt% loaded plastic scintillator. Subnanosecond time resolution was successfully achieved for all scintillators.

Original languageEnglish
Article number106361
JournalRadiation Measurements
Volume135
DOIs
Publication statusPublished - 2020 Jul

Keywords

  • Bi
  • Heavy metal
  • Plastic scintillator

ASJC Scopus subject areas

  • Radiation
  • Instrumentation

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