@article{oai:repo.qst.go.jp:00082886,
 author = {Magi, Arisa and Masanori, Koshimizu and Watanabe, Akito and Akira Yoko and Seong, Gimyeong and Tomai, Takaaki and Adschiri, Tadafumi and Haruki, Rie and Fumihiko, Nishikido and Shunji Kishiomto and Fujimoto, Yutaka and Asai, Keisuke and Masanori, Koshimizu and Fumihiko, Nishikido},
 issue = {6},
 journal = {Journal of Materials Science: Materials in Electronics},
 month = {Mar},
 note = {In this study, the 3-phenylpropionic acid (3-PPA)-modified Bi2O3 nanoparticle-loaded plastic scintillators were synthesized to obtain fast scintillators having high detection efficiency of high-energy X-rays. To reach a high light yield, the content of 2-(4-tert-butylphenyl)-5-(4-phenylphenyl))-1,3,4-oxadiazole (b-PBD) in the plastic scintillators was optimized. The detection efficiency for high-energy photons was enhanced by the incorporation of surface-modified Bi2O3 nanoparticles of less than 10 nm into scintillators at 5 or 10 wt%. In the pulse-height spectra, the photoelectric peak positions were located at the highest channels for the samples containing 0.50 or 1.0 mol% b-PBD regardless of the Bi concentration. The photoelectric peak positions shifted to lower channels with a further increase in the b-PBD concentration, which indicates that the light yield decreased due to concentration quenching. In addition, the time resolution of the detector equipped with the studied samples was of the sub-nanosecond scale, suggesting that they had a very fast response.},
 pages = {7987--7999},
 title = {Optimization of phosphor concentration of surface-modified Bi2O3 nanoparticle-loaded plastic scintillators for high-energy photon detection},
 volume = {32},
 year = {2021}
}