Spectroscopic study of plasma-facing graphite tiles modified by electron and proton irradiation

Kweon, Jin Jung; Lee, Kyu Won; Park, Jun Kue; Jeon, Gi-wan; Lee, Cheol Eui; Noh, S. J.; Kim, H. S.

doi:10.1016/j.nimb.2011.12.014

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Spectroscopic study of plasma-facing graphite tiles modified by electron and proton irradiation

Kweon, Jin Jung;
Lee, Kyu Won;
Park, Jun Kue;
Jeon, Gi-wan;
Lee, Cheol Eui;
외 2명

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초록

We have carried out Raman, electron spin resonance (ESR), and X-ray photoemission (XPS) spectroscopy measurements on the graphite tiles modified by electron and proton irradiation. While increase in local order was observed in the electron-irradiated sample, structural disorder and amorphization were revealed in the proton-irradiated sample, with much reduced electrical conductivity. Besides, a narrow ESR peak attributed to localized spins, closely associated with C-OH bonds as identified by the XPS measurements, was detected in the proton-irradiated sample. (C) 2011 Elsevier B.V. All rights reserved.

키워드

Carbon-based plasma-facing material; Graphite tile; Electron irradiation; Proton irradiation; Spectroscopy; X-RAY PHOTOELECTRON; THERMAL-CONDUCTIVITY; RAMAN-SCATTERING; CARBON NANOTUBES; SPECTRUM; XPS

제목: Spectroscopic study of plasma-facing graphite tiles modified by electron and proton irradiation

저자: Kweon, Jin Jung; Lee, Kyu Won; Park, Jun Kue; Jeon, Gi-wan; Lee, Cheol Eui; Noh, S. J.; Kim, H. S.

DOI: 10.1016/j.nimb.2011.12.014

발행일: 2012-03-01

유형: Article

저널명: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

권: 274

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