Abstract
Abstract Global particle balance in non-inductive long-duration plasma on QUEST has been investigated. Approximately 70% of the fuel hydrogen (H) was retained in the wall and then was almost exhausted just after the discharge. The global recycling ratio (Rg), defined as the ratio of the evacuated H2 flux to that injected, was found to gradually increase during discharges and subsequently rose rapidly. To study the growth of Rg, the thermal desorption spectra after deuterium implantation in a specimen exposed to QUEST plasma was analyzed with a model which includes reflection, diffusion, solution, recombination, trapping, and plasma-induced desorption in the re-deposition layer. The model reconstructs the growth of Rg during a long-duration plasma and indicates solution plays a dominant role in the growth.
| Original language | English |
|---|---|
| Article number | 48871 |
| Pages (from-to) | 1084-1086 |
| Number of pages | 3 |
| Journal | Journal of Nuclear Materials |
| Volume | 463 |
| DOIs | |
| Publication status | Published - Jul 22 2015 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Materials Science(all)
- Nuclear Energy and Engineering
Cite this
Particle balance in long duration RF driven plasmas on QUEST. / Hanada, K.; Zushi, H.; Yoshida, N.; Yugami, N.; Honda, T.; Hasegawa, M.; Mishra, K.; Kuzmin, A.; Nakamura, K.; Fujisawa, A.; Idei, H.; Nagashima, Y.; Watanabe, O.; Onchi, T.; Watanabe, H.; Tokunaga, K.; Higashijima, A.; Kawasaki, S.; Nakashima, H.; Takase, Y.; Fukuyama, A.; Mitarai, O.; Peng, Y. K.M.
In: Journal of Nuclear Materials, Vol. 463, 48871, 22.07.2015, p. 1084-1086.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Particle balance in long duration RF driven plasmas on QUEST
AU - Hanada, K.
AU - Zushi, H.
AU - Yoshida, N.
AU - Yugami, N.
AU - Honda, T.
AU - Hasegawa, M.
AU - Mishra, K.
AU - Kuzmin, A.
AU - Nakamura, K.
AU - Fujisawa, A.
AU - Idei, H.
AU - Nagashima, Y.
AU - Watanabe, O.
AU - Onchi, T.
AU - Watanabe, H.
AU - Tokunaga, K.
AU - Higashijima, A.
AU - Kawasaki, S.
AU - Nakashima, H.
AU - Takase, Y.
AU - Fukuyama, A.
AU - Mitarai, O.
AU - Peng, Y. K.M.
PY - 2015/7/22
Y1 - 2015/7/22
N2 - Abstract Global particle balance in non-inductive long-duration plasma on QUEST has been investigated. Approximately 70% of the fuel hydrogen (H) was retained in the wall and then was almost exhausted just after the discharge. The global recycling ratio (Rg), defined as the ratio of the evacuated H2 flux to that injected, was found to gradually increase during discharges and subsequently rose rapidly. To study the growth of Rg, the thermal desorption spectra after deuterium implantation in a specimen exposed to QUEST plasma was analyzed with a model which includes reflection, diffusion, solution, recombination, trapping, and plasma-induced desorption in the re-deposition layer. The model reconstructs the growth of Rg during a long-duration plasma and indicates solution plays a dominant role in the growth.
AB - Abstract Global particle balance in non-inductive long-duration plasma on QUEST has been investigated. Approximately 70% of the fuel hydrogen (H) was retained in the wall and then was almost exhausted just after the discharge. The global recycling ratio (Rg), defined as the ratio of the evacuated H2 flux to that injected, was found to gradually increase during discharges and subsequently rose rapidly. To study the growth of Rg, the thermal desorption spectra after deuterium implantation in a specimen exposed to QUEST plasma was analyzed with a model which includes reflection, diffusion, solution, recombination, trapping, and plasma-induced desorption in the re-deposition layer. The model reconstructs the growth of Rg during a long-duration plasma and indicates solution plays a dominant role in the growth.
UR - http://www.scopus.com/inward/record.url?scp=84937641969&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84937641969&partnerID=8YFLogxK
U2 - 10.1016/j.jnucmat.2015.01.013
DO - 10.1016/j.jnucmat.2015.01.013
M3 - Article
AN - SCOPUS:84937641969
VL - 463
SP - 1084
EP - 1086
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
M1 - 48871
ER -