ESR study for ion beam induced phenomena in poly (tetrafluoroethylene-co-hexafluoropropylene) (FEP)

Taeko Yoshikawa, Akihiro Oshima, Takeshi Murakami, Masakazu Washio

    研究成果: Article

    2 引用 (Scopus)

    抄録

    Trapped radicals induced in poly (tetrafluoroethylene-co-hexafluoropropylene) (FEP) were observed by X-band electron spin resonance (ESR) spectroscopy at room temperature (RT) under atmospheric field after an irradiation with various kinds of high energy ion beams (6MeV/u). The irradiation was carried out to a stacked FEP films under vacuum (<4E-4Pa) at RT with various fluences from 1.0×10 9 to 1.0×10 11ions/cm 2. All ESR spectra indicated an existence of peroxy radicals in each of the FEP films without any relation to a kind of ion and a penetration depth. Obtained depth profiles of radical concentrations induced with each ion beam almost correspond to those of stopping power. The trapped radical concentrations were strongly dependent on stopping power. It was found that G-value of trapped radicals by ion beam irradiation was decreased with increasing a stopping power, and was less than the case of gamma-rays irradiation.

    元の言語English
    ページ(範囲)1904-1909
    ページ数6
    ジャーナルRadiation Physics and Chemistry
    81
    発行部数12
    DOI
    出版物ステータスPublished - 2012 12 1

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    polytetrafluoroethylene
    electron paramagnetic resonance
    ion beams
    stopping power
    irradiation
    room temperature
    superhigh frequencies
    fluence
    penetration
    gamma rays
    vacuum
    profiles
    spectroscopy
    ions
    energy

    ASJC Scopus subject areas

    • Radiation

    これを引用

    ESR study for ion beam induced phenomena in poly (tetrafluoroethylene-co-hexafluoropropylene) (FEP). / Yoshikawa, Taeko; Oshima, Akihiro; Murakami, Takeshi; Washio, Masakazu.

    :: Radiation Physics and Chemistry, 巻 81, 番号 12, 01.12.2012, p. 1904-1909.

    研究成果: Article

    Yoshikawa, Taeko ; Oshima, Akihiro ; Murakami, Takeshi ; Washio, Masakazu. / ESR study for ion beam induced phenomena in poly (tetrafluoroethylene-co-hexafluoropropylene) (FEP). :: Radiation Physics and Chemistry. 2012 ; 巻 81, 番号 12. pp. 1904-1909.
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    AU - Murakami, Takeshi

    AU - Washio, Masakazu

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    N2 - Trapped radicals induced in poly (tetrafluoroethylene-co-hexafluoropropylene) (FEP) were observed by X-band electron spin resonance (ESR) spectroscopy at room temperature (RT) under atmospheric field after an irradiation with various kinds of high energy ion beams (6MeV/u). The irradiation was carried out to a stacked FEP films under vacuum (<4E-4Pa) at RT with various fluences from 1.0×10 9 to 1.0×10 11ions/cm 2. All ESR spectra indicated an existence of peroxy radicals in each of the FEP films without any relation to a kind of ion and a penetration depth. Obtained depth profiles of radical concentrations induced with each ion beam almost correspond to those of stopping power. The trapped radical concentrations were strongly dependent on stopping power. It was found that G-value of trapped radicals by ion beam irradiation was decreased with increasing a stopping power, and was less than the case of gamma-rays irradiation.

    AB - Trapped radicals induced in poly (tetrafluoroethylene-co-hexafluoropropylene) (FEP) were observed by X-band electron spin resonance (ESR) spectroscopy at room temperature (RT) under atmospheric field after an irradiation with various kinds of high energy ion beams (6MeV/u). The irradiation was carried out to a stacked FEP films under vacuum (<4E-4Pa) at RT with various fluences from 1.0×10 9 to 1.0×10 11ions/cm 2. All ESR spectra indicated an existence of peroxy radicals in each of the FEP films without any relation to a kind of ion and a penetration depth. Obtained depth profiles of radical concentrations induced with each ion beam almost correspond to those of stopping power. The trapped radical concentrations were strongly dependent on stopping power. It was found that G-value of trapped radicals by ion beam irradiation was decreased with increasing a stopping power, and was less than the case of gamma-rays irradiation.

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    KW - FEP

    KW - G-value

    KW - Ion beam

    KW - Stopping power

    KW - Trapped radical

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