TY - JOUR
T1 - Hydrogen retention properties of co-deposition under high-density plasmas in TRIAM-1M
AU - Tokitani, M.
AU - Miyamoto, M.
AU - Tokunaga, K.
AU - Fujiwara, T.
AU - Yoshida, N.
AU - Sakamoto, M.
AU - Zushi, H.
AU - Hanada, K.
AU - TRIAM Group, Group
AU - Nagata, S.
AU - Tsuchiya, B.
N1 - Funding Information:
The authors would like to thank Professor K. Kakimoto of the Research Institute for Applied Mechanics, Kyushu University for providing the Si specimens. This work was performed under the inter-university cooperative research program of the Institute for Materials Research, Tohoku University. This research was partly supported by the Japan Society for the Promotion of Science and Grant-in-Aid of Scientific Research from Japan Ministry of Education, Culture, Sports, Science and Technology.
PY - 2007/8/1
Y1 - 2007/8/1
N2 - Retention of hydrogen in co-deposits formed under high-density plasma discharge in TRIAM-1M was studied. In order to quantify the retained hydrogen, material probe experiments were performed under the high-density (over(n, ̃)e ∼ 1019 m- 3) discharges. After the exposure to the plasma, the quantitative analysis of deposition, hydrogen retention, and microscopic modification of specimens were performed by means of ion beam analysis and transmission electron microscopy. The co-deposits mainly consisted of Mo. The deposition rate of Mo was about ten times higher than that of the low-density discharge case. The hydrogen concentrations (H/Mo) retained in the co-deposits were 0.06-0.17, which was much higher than that in bulk-Mo and almost equal to the low-density case. These results indicate that as long as the co-deposition layers are continuously formed, strong wall pumping in TRIAM-1M is maintained during the discharges.
AB - Retention of hydrogen in co-deposits formed under high-density plasma discharge in TRIAM-1M was studied. In order to quantify the retained hydrogen, material probe experiments were performed under the high-density (over(n, ̃)e ∼ 1019 m- 3) discharges. After the exposure to the plasma, the quantitative analysis of deposition, hydrogen retention, and microscopic modification of specimens were performed by means of ion beam analysis and transmission electron microscopy. The co-deposits mainly consisted of Mo. The deposition rate of Mo was about ten times higher than that of the low-density discharge case. The hydrogen concentrations (H/Mo) retained in the co-deposits were 0.06-0.17, which was much higher than that in bulk-Mo and almost equal to the low-density case. These results indicate that as long as the co-deposition layers are continuously formed, strong wall pumping in TRIAM-1M is maintained during the discharges.
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U2 - 10.1016/j.jnucmat.2007.04.010
DO - 10.1016/j.jnucmat.2007.04.010
M3 - Article
AN - SCOPUS:34447530628
VL - 367-370 B
SP - 1487
EP - 1491
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - SPEC. ISS.
ER -