Exclusive attributes of undoped poly (ethylene terephthalate) for alpha particle detection

Hidehito Nakamura, Nobuhiro Sato, Hisashi Kitamura, Daisuke Maki, Yoshiyuki Shirakawa, Sentaro Takahashi

    Research output: Contribution to journalArticle

    1 Citation (Scopus)

    Abstract

    Poly (ethylene terephthalate) (PET) is available worldwide and has a broad range of applications. However, its basic properties as a scintillation material that is undoped with fluorescent guest molecules are not completely known. Here, we optically characterise undoped PET for use in radiation detection. Light absorption is primarily below 350 nm, with an emission maximum at 385 nm. An effective refractive index, determined from the emission spectrum and the wavelength dependence of the refractive index, is 1.62, which is greater than that for the sodium D line (ND = 1.57). The density of PET is 1.33 g/cm3, and its stopping power for 1-MeV electrons is 1.72 MeV cm2/g. Distinct peaks generated by alpha particles from 210Pb and 241Am radioactive sources appear in PET light-yield distributions. The PET response to 5-6-MeV alpha particles is approximately one-eighth that for electrons. These results demonstrate that undoped PET has special attributes for alpha particle detection. This knowledge will enable better performance of radiation equipment based on PET and its blends with other aromatic ring polymers.

    Original languageEnglish
    Pages (from-to)54-58
    Number of pages5
    JournalRadiation Measurements
    Volume92
    DOIs
    Publication statusPublished - 2016 Sep 1

    Fingerprint

    Alpha particles
    polyethylene terephthalate
    Polyethylene terephthalates
    alpha particles
    Refractive index
    refractivity
    D lines
    Radiation
    Electrons
    Scintillation
    stopping power
    radiation
    electromagnetic absorption
    Light absorption
    scintillation
    emission spectra
    electrons
    Sodium
    sodium
    Wavelength

    Keywords

    • Alpha particle detection
    • Aromatic ring polymer
    • Basic property
    • Poly (ethylene terephthalate)
    • Undoped scintillation material

    ASJC Scopus subject areas

    • Radiation
    • Instrumentation

    Cite this

    Exclusive attributes of undoped poly (ethylene terephthalate) for alpha particle detection. / Nakamura, Hidehito; Sato, Nobuhiro; Kitamura, Hisashi; Maki, Daisuke; Shirakawa, Yoshiyuki; Takahashi, Sentaro.

    In: Radiation Measurements, Vol. 92, 01.09.2016, p. 54-58.

    Research output: Contribution to journalArticle

    Nakamura, Hidehito ; Sato, Nobuhiro ; Kitamura, Hisashi ; Maki, Daisuke ; Shirakawa, Yoshiyuki ; Takahashi, Sentaro. / Exclusive attributes of undoped poly (ethylene terephthalate) for alpha particle detection. In: Radiation Measurements. 2016 ; Vol. 92. pp. 54-58.
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