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

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

doi:10.1016/j.nimb.2011.12.014

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

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

Department of Physics

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	145-147
Number of pages	3
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	274
DOIs	https://doi.org/10.1016/j.nimb.2011.12.014
Publication status	Published - 2012 Mar 1

Keywords

Carbon-based plasma-facing material
Electron irradiation
Graphite tile
Proton irradiation
Spectroscopy

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nimb.2011.12.014

Cite this

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title = "Spectroscopic study of plasma-facing graphite tiles modified by electron and proton irradiation",

abstract = "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.",

keywords = "Carbon-based plasma-facing material, Electron irradiation, Graphite tile, Proton irradiation, Spectroscopy",

author = "Kweon, {Jin Jung} and Lee, {Kyu Won} and Park, {Jun Kue} and Jeon, {Gi Wan} and Lee, {Cheol Eui} and Noh, {S. J.} and Kim, {H. S.}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (Project No. 20090082672).",

year = "2012",

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doi = "10.1016/j.nimb.2011.12.014",

language = "English",

volume = "274",

pages = "145--147",

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

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TY - JOUR

T1 - Spectroscopic study of plasma-facing graphite tiles modified by electron and proton irradiation

AU - Kweon, Jin Jung

AU - Lee, Kyu Won

AU - Park, Jun Kue

AU - Jeon, Gi Wan

AU - Lee, Cheol Eui

AU - Noh, S. J.

AU - Kim, H. S.

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (Project No. 20090082672).

PY - 2012/3/1

Y1 - 2012/3/1

N2 - 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.

AB - 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.

KW - Carbon-based plasma-facing material

KW - Electron irradiation

KW - Graphite tile

KW - Proton irradiation

KW - Spectroscopy

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DO - 10.1016/j.nimb.2011.12.014

M3 - Article

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VL - 274

SP - 145

EP - 147

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

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

SN - 0168-583X

ER -

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

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