TY - JOUR
T1 - The observation of dust behavior in TRIAM-1M
AU - Sasaki, K.
AU - Hanada, K.
AU - Nishino, N.
AU - Tokitani, M.
AU - Yoshida, N.
AU - Sato, K. N.
AU - Zushi, H.
AU - Nakamura, K.
AU - Sakamoto, M.
AU - Idei, H.
AU - Hasegawa, M.
AU - Kawasaki, S.
AU - Nakasihma, H.
AU - Higashijima, A.
N1 - Funding Information:
The authors would like to thank Professor Shiratani for an introduction of the method to collect dusts in the vacuum vessel. This work was partially performed under the framework of joint-use research at RIAM Kyushu University and the bi-directional collaboration organized by NIFS, and is partially supported by a Grant-in-Aid for Scientific Research from Ministry of Education, Science and Culture of Japan.
PY - 2007/6/15
Y1 - 2007/6/15
N2 - The observation of dusts in plasmas was carried out by high speed camera in full non-inductive lower hybrid current drive (LHCD) plasma on TRIAM-1M. The velocities of dusts were 10-50 m/s. The number of dust generated per second increased with the discharge duration in the range of 20-57 s. This suggests that a part of dusts were generated from a movable limiter whose the surface temperature increases with the discharge duration. Dusts were coming from various directions even close to the movable limiter. Dusts were collected in the vacuum vessel by use of a kind of cleaner and the composition and the size of dust were examined by Scanning Electron Microscope (SEM). Dust size was several μm and composition was Molybdenum mixed with small amount of elements of stainless metal. The poloidal distribution of the collected mass of dusts was almost uniform.
AB - The observation of dusts in plasmas was carried out by high speed camera in full non-inductive lower hybrid current drive (LHCD) plasma on TRIAM-1M. The velocities of dusts were 10-50 m/s. The number of dust generated per second increased with the discharge duration in the range of 20-57 s. This suggests that a part of dusts were generated from a movable limiter whose the surface temperature increases with the discharge duration. Dusts were coming from various directions even close to the movable limiter. Dusts were collected in the vacuum vessel by use of a kind of cleaner and the composition and the size of dust were examined by Scanning Electron Microscope (SEM). Dust size was several μm and composition was Molybdenum mixed with small amount of elements of stainless metal. The poloidal distribution of the collected mass of dusts was almost uniform.
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U2 - 10.1016/j.jnucmat.2007.01.199
DO - 10.1016/j.jnucmat.2007.01.199
M3 - Article
AN - SCOPUS:34248531317
SN - 0022-3115
VL - 363-365
SP - 238
EP - 241
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - 1-3
ER -