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Damage in graphite tiles irradiated with helium plasmas
- Authors
- Kim, Han-Sem; Lee, Seung-kyo; Ohn, Y. G.; Noh, Seung Jeong; Kweon, Jin Jung; Park, Jun Kue; Lee, Cheol Eui; Woo, Hyun-Jong; Park, Sung June; Chung, Kyu Sun
- Issue Date
- Sep-2012
- Publisher
- KOREAN PHYSICAL SOC
- Keywords
- Plasma-facing material; Graphite tile; Helium plasma; Radiation-enhanced sublimation
- Citation
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.61, no.5, pp.832 - 834
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF THE KOREAN PHYSICAL SOCIETY
- Volume
- 61
- Number
- 5
- Start Page
- 832
- End Page
- 834
- ISSN
- 0374-4884
- Abstract
- Plasma-facing materials in fusion devices are irradiated by a high particle flux from a dense plasma. Graphite tiles, widely used as plasma-facing materials, were irradiated with a helium plasma of a high flux and low energy; the damage in the graphite-tile target was investigated. Changes in the surface morphology were observed from scanning electron microscopy; the electrical conductivity was decreased from four-probe measurement; the intensity of the graphite disorder peak was increased from Raman spectroscopy.
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