TY - JOUR
T1 - In situ measurements of erosion and redeposition during long duration discharges on TRIAM-1M
AU - Sakamoto, M.
AU - Ogawa, M.
AU - Zushi, H.
AU - Higashijima, A.
AU - Nakashima, H.
AU - Kawasaki, S.
AU - Hasegawa, M.
AU - Idei, H.
AU - Hanada, K.
AU - Nakamura, K.
AU - Sato, K. N.
N1 - Funding Information:
The authors gratefully acknowledge helpful advices to develop the measurement system from Dr P. Wienhold. This work has been partially performed under the framework of joint-use research in RIAM Kyushu University and the bi-directional collaboration organized by NIFS. This work 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 - An in situ and real time measurement system of erosion and deposition has been developed, which is based on interference of light on a thin semi-transparent layer of redeposited material on substrate. It has been applied to long duration discharges in TRIAM-1M. The sapphire window is used as substrate. The deposition pattern on the window indicates up down and toroidal asymmetry. In the 5 h 16 min discharge, the thickness of the deposited layer increased monotonically with time and its deposition rate is ∼1.5 × 1016 Mo m-2 s-1. In the low density and long duration discharge, the Mo deposition rate on the window depends on the ratio of Mo flux to hydrogen flux.
AB - An in situ and real time measurement system of erosion and deposition has been developed, which is based on interference of light on a thin semi-transparent layer of redeposited material on substrate. It has been applied to long duration discharges in TRIAM-1M. The sapphire window is used as substrate. The deposition pattern on the window indicates up down and toroidal asymmetry. In the 5 h 16 min discharge, the thickness of the deposited layer increased monotonically with time and its deposition rate is ∼1.5 × 1016 Mo m-2 s-1. In the low density and long duration discharge, the Mo deposition rate on the window depends on the ratio of Mo flux to hydrogen flux.
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U2 - 10.1016/j.jnucmat.2007.01.055
DO - 10.1016/j.jnucmat.2007.01.055
M3 - Article
AN - SCOPUS:34248531689
VL - 363-365
SP - 233
EP - 237
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - 1-3
ER -