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First boronization in KSTAR: Experiences on carborane
- Authors
- Hong, Suk-Ho; Lee, Kun-Su; Kim, Kwang-Pyo; Kim, Kyung-Min; Kim, Hong-Tack; Sun, Jong-Ho; Woo, Hyun-Jong; Park, Jae-Min; Park, Eun-Kyong; Kim, Woong-Chae; Kim, Hak-Kun; Park, Kap-Rai; Yang, Hyung-Lyeol; Oh, Yeong-Kook; Na, Hoon-Kyun; Lho, Taehyeop; Chung, Kyu-Sun
- Issue Date
- Aug-2011
- Publisher
- Elsevier BV
- Citation
- Journal of Nuclear Materials, v.415, no.1, pp S1050 - S1053
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Journal of Nuclear Materials
- Volume
- 415
- Number
- 1
- Start Page
- S1050
- End Page
- S1053
- ISSN
- 0022-3115
1873-4820
- Abstract
- First boronization was performed in KSTAR tokamak during 2009 campaign in order to reduce oxygen impurities and to lower the power loss due to radiation. We report the results from the experiences on carborane during the first boronization in KSTAR. After the boronization. H2O and O-2 level in the vacuum vessel are reduced significantly. The characteristics of the deposited thin films were analyzed by variable angle spectroscopic ellipsometry, XPS, and AES. similar to 1.78 x 10(16) cm(-2) s(-1) of carbon flux on the wall is estimated by using cavity technique.
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