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TJ-II: Filter spectroscopy for pellet ablation cloud in TJ-II NBI plasmas: Difference between revisions
TJ-II: Filter spectroscopy for pellet ablation cloud in TJ-II NBI plasmas (view source)
Revision as of 12:43, 4 December 2023
, 4 December 2023→Description of the activity
(Created page with "== Experimental campaign == 2020 Spring == Proposal title == '''Filter spectroscopy for pellet ablation cloud in TJ-II NBI plasmas''' == Name and affiliation of proponent ==...") |
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In LHD, the filter spectroscopy shows that the cloud electron density is estimated to be from <math>1 | In LHD, the filter spectroscopy shows that the cloud electron density is estimated to be from <math>1 \times 10^{22}</math> to <math>3 \times 10^{23} m^{-3}</math>. Also, the observed plasma cloud temperature, being about 1 eV, indicates the presence of a weakly ionized plasma cloud <ref>G. Motojima, Review Scientific Instruments (2012)</ref>. Recently, the similar measurements have been conducted in Heliotron J. Preliminary results suggest the similar density range of plasma cloud density. If the measurements will be conducted also in TJ-II, the pellet ablation cloud parameters could be compared with various stellarator/heliotron devices. This could contribute to the physics understanding of pellet ablation. Moreover, the results are probably important for the development of stellarator/heliotron concept. | ||
== International or National funding project or entity == | == International or National funding project or entity == | ||