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Poly (ether sulfone) as a scintillation material for radiation detection.

Hidehito Nakamura1, Yoshiyuki Shirakawa2, Hisashi Kitamura2

  • 1Kyoto 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.

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Summary

Poly (ether sulfone) (PES) shows promise as a scintillation material for radiation detection. This polymer exhibits a higher light yield than poly (ethylene terephthalate) and good energy resolution for alpha particles.

Keywords:
Alpha responseAromatic ring polymerLight yieldPoly (ether sulfone)Refractive index

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Area of Science:

  • Materials Science
  • Nuclear Instrumentation

Background:

  • Aromatic ring polymers are increasingly explored for scintillation applications in radiation detection.
  • Identifying and characterizing polymers with optimal scintillation properties is crucial.

Purpose of the Study:

  • To characterize poly (ether sulfone) (PES) as a potential scintillation material.
  • To evaluate its optical and radiation detection properties.

Main Methods:

  • Characterization of PES, an amber-colored transparent resin with sulfur as a main component.
  • Measurement of emission spectrum and calculation of effective refractive index.
  • Determination of light yield using (137)Cs and (207)Bi radioactive sources.
  • Assessment of energy response and resolution for alpha particles from (241)Am and (252)Cf.

Main Results:

  • PES has a density of 1.37 g/cm(3) and emits short-wavelength light with a 350-nm maximum.
  • Its effective refractive index was determined to be 1.74.
  • PES demonstrated a light yield 2.21 times greater than poly (ethylene terephthalate) and 0.31 times that of poly (ethylene naphthalate).
  • Energy response to alpha particles was 546 ± 81 keVee and 598 ± 83 keVee, with energy resolutions of 17.0 ± 0.1% and 16.0 ± 0.1%, respectively.

Conclusions:

  • Poly (ether sulfone) exhibits favorable optical and detection characteristics.
  • PES shows significant potential for application as a scintillation material in radiation detection systems.