Spectroscopic study of energetic helium-ion irradiation effects on nuclear graphite tiles

Do Wan Kim, K. W. Lee, D. M. Choi, S. J. Noh, H. S. Kim, Cheol Eui Lee

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Helium ion-irradiation effects on the nuclear graphite tiles were studied in order to understand the structural modifications and damages that can be produced by fusion reaction in tokamaks. The surface morphological changes due to increasing dose of the irradiation were examined by the field-effect scanning electron microscopy, and X-ray photoelectron spectroscopy elucidated the changes in the shallow surface bonding configurations caused by the energetic irradiation. Raman spectroscopy revealed the structural defects and diamond-like carbon sites that increased with increasing irradiation dose, and the average inter-defect distance was found from the Raman peak intensities as a function of the irradiation dose.

Original languageEnglish
Pages (from-to)5-8
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Publication statusPublished - 2016 Feb 1

Bibliographical note

Funding Information:
This work was supported by the National Research Foundation of Korea (Project No. 2015M2B2A4029012 , 2013057555 , 2015M1A7A1A01002234 , and NRF-2010-0027963). Measurements at the Korea Basic Science Institute (KBSI) are acknowledged.

Publisher Copyright:
© 2015 Elsevier B.V. All rights reserved.


  • Graphite tile
  • Helium-ion irradiation
  • Raman spectroscopy
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation


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