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

Research output: Contribution to journalArticle

6 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 languageEnglish
Pages (from-to)145-147
Number of pages3
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume274
DOIs
Publication statusPublished - 2012 Mar 1

Fingerprint

Proton irradiation
Facings
proton irradiation
Electron irradiation
tiles
electron irradiation
Tile
Paramagnetic resonance
Protons
Graphite
graphite
Plasmas
Amorphization
electron paramagnetic resonance
Photoemission
photoelectric emission
Photoelectron spectroscopy
X ray spectroscopy
protons
X rays

Keywords

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

ASJC Scopus subject areas

  • Instrumentation
  • Nuclear and High Energy Physics

Cite this

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.

In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 274, 01.03.2012, p. 145-147.

Research output: Contribution to journalArticle

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AU - Noh, S. J.

AU - Kim, H. S.

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