Abstract
In order to set up a data base and diagnostic capability for understanding atomic hydrogen behaviour in pumped divertor plasmas, an experiment and a feasibility study using a novel laser-induced fluorescence (LIF) technique were performed. For the former, combined measurements of LIF tuned to Hα and emission intensities at Hα/Hβ were carried out on the compact helical system (CHS). The comparison of the measured data and a particle simulation code revealed atomic hydrogen behaviour quantitatively, providing a full estimate of toroidally and poloidally asymmetric distributions of hydrogen atoms. In order to supplement the data base around the pumped divertor region, the applicability of an LIF technique which uses two-photon excitation from the ground state was examined, based on the real optical constraints of the envisaged JET pumped divertor. It was concluded that it is feasible and the only remaining problem is not a serious one.
| Original language | English |
|---|---|
| Pages (from-to) | 210-214 |
| Number of pages | 5 |
| Journal | Journal of Nuclear Materials |
| Volume | 196-198 |
| Issue number | C |
| DOIs | |
| Publication status | Published - Dec 1 1992 |
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All Science Journal Classification (ASJC) codes
- Nuclear and High Energy Physics
- Materials Science(all)
- Nuclear Energy and Engineering
Cite this
Understanding atomic hydrogen behaviour in pumped divertor plasmas. / Uchino, K.; Takenaga, H.; Kajiwara, T.; Okada, T.; Muraoka, K.; Maeda, M.; Iguchi, H.; Ida, K.; Okamura, S.; Yamada, H.; Matsuoka, K.
In: Journal of Nuclear Materials, Vol. 196-198, No. C, 01.12.1992, p. 210-214.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Understanding atomic hydrogen behaviour in pumped divertor plasmas
AU - Uchino, K.
AU - Takenaga, H.
AU - Kajiwara, T.
AU - Okada, T.
AU - Muraoka, K.
AU - Maeda, M.
AU - Iguchi, H.
AU - Ida, K.
AU - Okamura, S.
AU - Yamada, H.
AU - Matsuoka, K.
PY - 1992/12/1
Y1 - 1992/12/1
N2 - In order to set up a data base and diagnostic capability for understanding atomic hydrogen behaviour in pumped divertor plasmas, an experiment and a feasibility study using a novel laser-induced fluorescence (LIF) technique were performed. For the former, combined measurements of LIF tuned to Hα and emission intensities at Hα/Hβ were carried out on the compact helical system (CHS). The comparison of the measured data and a particle simulation code revealed atomic hydrogen behaviour quantitatively, providing a full estimate of toroidally and poloidally asymmetric distributions of hydrogen atoms. In order to supplement the data base around the pumped divertor region, the applicability of an LIF technique which uses two-photon excitation from the ground state was examined, based on the real optical constraints of the envisaged JET pumped divertor. It was concluded that it is feasible and the only remaining problem is not a serious one.
AB - In order to set up a data base and diagnostic capability for understanding atomic hydrogen behaviour in pumped divertor plasmas, an experiment and a feasibility study using a novel laser-induced fluorescence (LIF) technique were performed. For the former, combined measurements of LIF tuned to Hα and emission intensities at Hα/Hβ were carried out on the compact helical system (CHS). The comparison of the measured data and a particle simulation code revealed atomic hydrogen behaviour quantitatively, providing a full estimate of toroidally and poloidally asymmetric distributions of hydrogen atoms. In order to supplement the data base around the pumped divertor region, the applicability of an LIF technique which uses two-photon excitation from the ground state was examined, based on the real optical constraints of the envisaged JET pumped divertor. It was concluded that it is feasible and the only remaining problem is not a serious one.
UR - http://www.scopus.com/inward/record.url?scp=4243476514&partnerID=8YFLogxK
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U2 - 10.1016/S0022-3115(06)80033-4
DO - 10.1016/S0022-3115(06)80033-4
M3 - Article
AN - SCOPUS:4243476514
VL - 196-198
SP - 210
EP - 214
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
SN - 0022-3115
IS - C
ER -