Poly (ether sulfone) as a scintillation material for radiation detection.
Considerable attention has been drawn to the advantages of using aromatic ring polymers for scintillation materials in radiation detection. Thus, it is important to identify and characterise those with the best potential. Here, we characterise poly (ether sulfone) (PES), which is an amber-coloured transparent resin that possesses sulfur as a main component and has a density of 1.37 g/cm(3). PES emits short-wavelength light with a 350-nm maximum. By taking into account its emission spectrum, we demonstrate that its effective refractive index is 1.74. Light yield distributions generated by (137)Cs and (207)Bi radioactive sources were obtained. PES has a light yield that is 2.21 times that of poly (ethylene terephthalate), and 0.31 times that of poly (ethylene naphthalate). The energy response to 5,486 keV alpha particles emitted from (241)Am was 546 ± 81 keV electron equivalents (keVee), while the energy resolution was 17.0 ± 0.1%. The energy response to 6,118 keV alpha particles emitted from (252)Cf was 598 ± 83 keVee, while the energy resolution was 16.0 ± 0.1%. Overall, PES has potential for use as a scintillation material in radiation detection.
Kyoto University, 2, Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan; National Institute of Radiological Sciences, 4-9-1, Anagawa, Inage-ku, Chiba 263-8555, Japan. Electronic address: hidehito@rri.kyoto-u.ac.jp.
Hidehito
H
Nakamura
National Institute of Radiological Sciences, 4-9-1, Anagawa, Inage-ku, Chiba 263-8555, Japan.
Yoshiyuki
Y
Shirakawa
National Institute of Radiological Sciences, 4-9-1, Anagawa, Inage-ku, Chiba 263-8555, Japan.
Hisashi
H
Kitamura
Kyoto University, 2, Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan.
Nobuhiro
N
Sato
Kyoto University, 2, Asashiro-Nishi, Kumatori-cho, Sennan-gun, Osaka 590-0494, Japan.
Sentaro
S
Takahashi
Alpha response; Aromatic ring polymer; Light yield; Poly (ether sulfone); Refractive index