Polysulfone as a scintillation material without doped fluorescent molecules

Hidehito Nakamura, Hisashi Kitamura, Nobuhiro Sato, Masaya Kanayama, Yoshiyuki Shirakawa, Sentaro Takahashi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Abstract Scintillation materials made from un-doped aromatic ring polymers can be potentially used for radiation detection. Here we demonstrate that Polysulfone (PSU) works without doped fluorescent guest molecules, and thus broadens the choices available for radiation detection. The transparent PSU substrate (1.24 g/cm3) significantly absorbs short-wavelength light below approximately 350 nm. Visible light absorption colours the substrate slightly yellow, and indigo blue fluorescence is emitted. The fluorescence maximum occurs at the intersection of the 340-nm excitation and 380-nm emission spectra; thus the emission is partially absorbed by the substrate. An effective refractive index of 1.70 is derived based on the wavelength dependence of the refractive indices and the emission spectrum. A peak caused by 976-keV internal-conversion electrons from a 207Bi radioactive source appears in the light yield distribution. The light yield is equivalent to that of poly (phenyl sulfone), which has a similar structure. Overall, un-doped PSU could be a component substrate in polymer blends and be used as an educational tool in radiation detection.

Original languageEnglish
Article number57850
Pages (from-to)206-209
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume797
DOIs
Publication statusPublished - 2015 Jul 20
Externally publishedYes

Fingerprint

Polysulfones
Scintillation
scintillation
Molecules
Substrates
Radiation
molecules
Refractive index
emission spectra
radiation
Fluorescence
refractivity
Wavelength
fluorescence
sulfones
polymer blends
internal conversion
Polymer blends
electromagnetic absorption
wavelengths

Keywords

  • Aromatic ring polymer
  • Diphenyl sulfone group
  • Polymer blend
  • Polysulfone
  • Radiation detection

ASJC Scopus subject areas

  • Instrumentation
  • Nuclear and High Energy Physics

Cite this

Polysulfone as a scintillation material without doped fluorescent molecules. / Nakamura, Hidehito; Kitamura, Hisashi; Sato, Nobuhiro; Kanayama, Masaya; Shirakawa, Yoshiyuki; Takahashi, Sentaro.

In: Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 797, 57850, 20.07.2015, p. 206-209.

Research output: Contribution to journalArticle

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AU - Kitamura, Hisashi

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AU - Takahashi, Sentaro

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N2 - Abstract Scintillation materials made from un-doped aromatic ring polymers can be potentially used for radiation detection. Here we demonstrate that Polysulfone (PSU) works without doped fluorescent guest molecules, and thus broadens the choices available for radiation detection. The transparent PSU substrate (1.24 g/cm3) significantly absorbs short-wavelength light below approximately 350 nm. Visible light absorption colours the substrate slightly yellow, and indigo blue fluorescence is emitted. The fluorescence maximum occurs at the intersection of the 340-nm excitation and 380-nm emission spectra; thus the emission is partially absorbed by the substrate. An effective refractive index of 1.70 is derived based on the wavelength dependence of the refractive indices and the emission spectrum. A peak caused by 976-keV internal-conversion electrons from a 207Bi radioactive source appears in the light yield distribution. The light yield is equivalent to that of poly (phenyl sulfone), which has a similar structure. Overall, un-doped PSU could be a component substrate in polymer blends and be used as an educational tool in radiation detection.

AB - Abstract Scintillation materials made from un-doped aromatic ring polymers can be potentially used for radiation detection. Here we demonstrate that Polysulfone (PSU) works without doped fluorescent guest molecules, and thus broadens the choices available for radiation detection. The transparent PSU substrate (1.24 g/cm3) significantly absorbs short-wavelength light below approximately 350 nm. Visible light absorption colours the substrate slightly yellow, and indigo blue fluorescence is emitted. The fluorescence maximum occurs at the intersection of the 340-nm excitation and 380-nm emission spectra; thus the emission is partially absorbed by the substrate. An effective refractive index of 1.70 is derived based on the wavelength dependence of the refractive indices and the emission spectrum. A peak caused by 976-keV internal-conversion electrons from a 207Bi radioactive source appears in the light yield distribution. The light yield is equivalent to that of poly (phenyl sulfone), which has a similar structure. Overall, un-doped PSU could be a component substrate in polymer blends and be used as an educational tool in radiation detection.

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