The Experts below are selected from a list of 114 Experts worldwide ranked by ideXlab platform

H L Frisch - One of the best experts on this subject based on the ideXlab platform.

  • study of diffusion and trapping of a Fluorinated Hydrocarbon in ion beam irradiated poly styrene by nuclear resonance reaction analysis
    Applied Physics Letters, 1994
    Co-Authors: Kenji Umezawa, W M Gibson, H L Frisch, S Nakanishi, Akira Kitamura
    Abstract:

    The swelling of a poly(styrene) (PS) glass by sorption of a Fluorinated Hydrocarbon, 3,5‐bis (trifluoromethyl) aniline (TFMA) is considered in a regime characterized by so called case II diffusion. Attention is focused on diffusion and trapping of vapor into ion beam irradiated glassy PS by using nuclear resonance reaction analysis. The diffusion coefficient for the TFMA is dramatically decreased on irradiation with a 30 keV H+ with 5×1013–1×1014 atoms/cm2 at 22.5 °C. These ion beam irradiation effects are similar to temperature effects on diffusion. As an application of the observed effect, trapping the TFMA was carried out between two different ion beam irradiation regions into PS at room temperature. This feature may allow development of new kinds of devices for applications.

  • study of diffusion of a Fluorinated Hydrocarbon in ion beam irradiated poly styrene by nuclear resonance analysis
    Applied Physics Letters, 1992
    Co-Authors: Kenji Umezawa, W M Gibson, John T Weltch, Peiguang Zhou, Qihua Xu, H L Frisch
    Abstract:

    The diffusion of a Fluorinated Hydrocarbon into 30 keV‐H+ irradiated glassy poly(styrene) (PS) was studied by using nuclear resonance reaction analysis. The diffraction coefficient and front velocity for diffusing a particular Fluorinated Hydrocarbon, 3, 5‐bis (trifluoromethyl) aniline (TFMA) in PS (MW=400 000) are dramatically decreased on irradiation with 5×1013–1×1014 atoms/cm2 at 22.5 °C. These ion beam irradiation effects are similar to temperature effects on diffusion. A possible application of the observed effect is the control of diffusion of a vapor into cross‐linked polymer glasses by means of ion beam implantation techniques. It is our belief that this is the first report of this phenomena due to the effects of ion beam irradiation.

  • a study of case ii diffusion of a Fluorinated Hydrocarbon in poly styrene by resonance nuclear reaction analysis
    Journal of Applied Physics, 1992
    Co-Authors: Kenji Umezawa, W M Gibson, John T Welch, Koichi Araki, Glaucione Barros, H L Frisch
    Abstract:

    The diffusion of a Fluorinated Hydrocarbon into glassy poly(styrene) (PS) was studied by using resonance nuclear reaction analysis. It was found that; (1) the activation energy derived from measured diffusion coefficients is in good agreement with the value calculated from measured induction times, (2) the diffusion coefficient depends on molecular weight of PS, reflecting the dependence of the mobility on the polymer chain matrix, (3) the mathematical foundation of Lasky and Kramer provides a framework to obtain swelling kinetics from the experimental diffusion measurements.

Kenji Umezawa - One of the best experts on this subject based on the ideXlab platform.

  • study of diffusion and trapping of a Fluorinated Hydrocarbon in ion beam irradiated poly styrene by nuclear resonance reaction analysis
    Applied Physics Letters, 1994
    Co-Authors: Kenji Umezawa, W M Gibson, H L Frisch, S Nakanishi, Akira Kitamura
    Abstract:

    The swelling of a poly(styrene) (PS) glass by sorption of a Fluorinated Hydrocarbon, 3,5‐bis (trifluoromethyl) aniline (TFMA) is considered in a regime characterized by so called case II diffusion. Attention is focused on diffusion and trapping of vapor into ion beam irradiated glassy PS by using nuclear resonance reaction analysis. The diffusion coefficient for the TFMA is dramatically decreased on irradiation with a 30 keV H+ with 5×1013–1×1014 atoms/cm2 at 22.5 °C. These ion beam irradiation effects are similar to temperature effects on diffusion. As an application of the observed effect, trapping the TFMA was carried out between two different ion beam irradiation regions into PS at room temperature. This feature may allow development of new kinds of devices for applications.

  • study of diffusion of a Fluorinated Hydrocarbon in ion beam irradiated poly styrene by nuclear resonance analysis
    Applied Physics Letters, 1992
    Co-Authors: Kenji Umezawa, W M Gibson, John T Weltch, Peiguang Zhou, Qihua Xu, H L Frisch
    Abstract:

    The diffusion of a Fluorinated Hydrocarbon into 30 keV‐H+ irradiated glassy poly(styrene) (PS) was studied by using nuclear resonance reaction analysis. The diffraction coefficient and front velocity for diffusing a particular Fluorinated Hydrocarbon, 3, 5‐bis (trifluoromethyl) aniline (TFMA) in PS (MW=400 000) are dramatically decreased on irradiation with 5×1013–1×1014 atoms/cm2 at 22.5 °C. These ion beam irradiation effects are similar to temperature effects on diffusion. A possible application of the observed effect is the control of diffusion of a vapor into cross‐linked polymer glasses by means of ion beam implantation techniques. It is our belief that this is the first report of this phenomena due to the effects of ion beam irradiation.

  • a study of case ii diffusion of a Fluorinated Hydrocarbon in poly styrene by resonance nuclear reaction analysis
    Journal of Applied Physics, 1992
    Co-Authors: Kenji Umezawa, W M Gibson, John T Welch, Koichi Araki, Glaucione Barros, H L Frisch
    Abstract:

    The diffusion of a Fluorinated Hydrocarbon into glassy poly(styrene) (PS) was studied by using resonance nuclear reaction analysis. It was found that; (1) the activation energy derived from measured diffusion coefficients is in good agreement with the value calculated from measured induction times, (2) the diffusion coefficient depends on molecular weight of PS, reflecting the dependence of the mobility on the polymer chain matrix, (3) the mathematical foundation of Lasky and Kramer provides a framework to obtain swelling kinetics from the experimental diffusion measurements.

W M Gibson - One of the best experts on this subject based on the ideXlab platform.

  • study of diffusion and trapping of a Fluorinated Hydrocarbon in ion beam irradiated poly styrene by nuclear resonance reaction analysis
    Applied Physics Letters, 1994
    Co-Authors: Kenji Umezawa, W M Gibson, H L Frisch, S Nakanishi, Akira Kitamura
    Abstract:

    The swelling of a poly(styrene) (PS) glass by sorption of a Fluorinated Hydrocarbon, 3,5‐bis (trifluoromethyl) aniline (TFMA) is considered in a regime characterized by so called case II diffusion. Attention is focused on diffusion and trapping of vapor into ion beam irradiated glassy PS by using nuclear resonance reaction analysis. The diffusion coefficient for the TFMA is dramatically decreased on irradiation with a 30 keV H+ with 5×1013–1×1014 atoms/cm2 at 22.5 °C. These ion beam irradiation effects are similar to temperature effects on diffusion. As an application of the observed effect, trapping the TFMA was carried out between two different ion beam irradiation regions into PS at room temperature. This feature may allow development of new kinds of devices for applications.

  • study of diffusion of a Fluorinated Hydrocarbon in ion beam irradiated poly styrene by nuclear resonance analysis
    Applied Physics Letters, 1992
    Co-Authors: Kenji Umezawa, W M Gibson, John T Weltch, Peiguang Zhou, Qihua Xu, H L Frisch
    Abstract:

    The diffusion of a Fluorinated Hydrocarbon into 30 keV‐H+ irradiated glassy poly(styrene) (PS) was studied by using nuclear resonance reaction analysis. The diffraction coefficient and front velocity for diffusing a particular Fluorinated Hydrocarbon, 3, 5‐bis (trifluoromethyl) aniline (TFMA) in PS (MW=400 000) are dramatically decreased on irradiation with 5×1013–1×1014 atoms/cm2 at 22.5 °C. These ion beam irradiation effects are similar to temperature effects on diffusion. A possible application of the observed effect is the control of diffusion of a vapor into cross‐linked polymer glasses by means of ion beam implantation techniques. It is our belief that this is the first report of this phenomena due to the effects of ion beam irradiation.

  • a study of case ii diffusion of a Fluorinated Hydrocarbon in poly styrene by resonance nuclear reaction analysis
    Journal of Applied Physics, 1992
    Co-Authors: Kenji Umezawa, W M Gibson, John T Welch, Koichi Araki, Glaucione Barros, H L Frisch
    Abstract:

    The diffusion of a Fluorinated Hydrocarbon into glassy poly(styrene) (PS) was studied by using resonance nuclear reaction analysis. It was found that; (1) the activation energy derived from measured diffusion coefficients is in good agreement with the value calculated from measured induction times, (2) the diffusion coefficient depends on molecular weight of PS, reflecting the dependence of the mobility on the polymer chain matrix, (3) the mathematical foundation of Lasky and Kramer provides a framework to obtain swelling kinetics from the experimental diffusion measurements.

Akira Kitamura - One of the best experts on this subject based on the ideXlab platform.

  • study of diffusion and trapping of a Fluorinated Hydrocarbon in ion beam irradiated poly styrene by nuclear resonance reaction analysis
    Applied Physics Letters, 1994
    Co-Authors: Kenji Umezawa, W M Gibson, H L Frisch, S Nakanishi, Akira Kitamura
    Abstract:

    The swelling of a poly(styrene) (PS) glass by sorption of a Fluorinated Hydrocarbon, 3,5‐bis (trifluoromethyl) aniline (TFMA) is considered in a regime characterized by so called case II diffusion. Attention is focused on diffusion and trapping of vapor into ion beam irradiated glassy PS by using nuclear resonance reaction analysis. The diffusion coefficient for the TFMA is dramatically decreased on irradiation with a 30 keV H+ with 5×1013–1×1014 atoms/cm2 at 22.5 °C. These ion beam irradiation effects are similar to temperature effects on diffusion. As an application of the observed effect, trapping the TFMA was carried out between two different ion beam irradiation regions into PS at room temperature. This feature may allow development of new kinds of devices for applications.

John T Weltch - One of the best experts on this subject based on the ideXlab platform.

  • study of diffusion of a Fluorinated Hydrocarbon in ion beam irradiated poly styrene by nuclear resonance analysis
    Applied Physics Letters, 1992
    Co-Authors: Kenji Umezawa, W M Gibson, John T Weltch, Peiguang Zhou, Qihua Xu, H L Frisch
    Abstract:

    The diffusion of a Fluorinated Hydrocarbon into 30 keV‐H+ irradiated glassy poly(styrene) (PS) was studied by using nuclear resonance reaction analysis. The diffraction coefficient and front velocity for diffusing a particular Fluorinated Hydrocarbon, 3, 5‐bis (trifluoromethyl) aniline (TFMA) in PS (MW=400 000) are dramatically decreased on irradiation with 5×1013–1×1014 atoms/cm2 at 22.5 °C. These ion beam irradiation effects are similar to temperature effects on diffusion. A possible application of the observed effect is the control of diffusion of a vapor into cross‐linked polymer glasses by means of ion beam implantation techniques. It is our belief that this is the first report of this phenomena due to the effects of ion beam irradiation.