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タイトル: Evaluation of plume characteristics of arc-heaters with various oxygen injection systems
著者: Matsui, Makoto
Takayanagi, Hiroki
Oda, Yasuhisa
Komurasaki, Kimiya
Arakawa, Yoshihiro
キーワード: Arc-heater
Atomic Oxygen
Zirconium Cathode
Laser Absorption Spectroscopy
発行日: 2006年9月
出版者: Pergamon Press
掲載誌情報: Vacuum. Vol.80, Iss.11-12, 2006-09, pp. 1161-1166
抄録: Arc-heater plumes generated by various oxygen injection systems were investigated by laser absorption spectroscopy. Firstly, oxygen was directly injected into a high temperature cathode-jet region through a thoriated-tungsten hollow cathode. Although number density of atomic oxygen was increased, erosion of the cathode was too severe to maintain stable discharge. Then, zirconium was used as a cathode material to reduce cathode erosion by oxidation. As a result, stable discharge was maintained for three hours with pre-mixed argon-oxygen injection and number density of atomic oxygen was successfully increased.
URI: http://hdl.handle.net/2261/32481
ISSN: 0042207X
出現カテゴリ:014 自然科学
1221210 学術雑誌論文


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