@article{oai:nifs-repository.repo.nii.ac.jp:00011632,
 author = {OISHI,  Tetsutarou and OISHI,  Tetsutaro and MORITA,  Shigeru and MURAKAMI,  Izumi and KATO,  Daiji and SAKAUE,  Hiroyuki A. and KAWAMOTO, Yasuko and KAWATE, Tomoko and GOTO,  Motoshi},
 journal = {Journal of Physics: Conference Series},
 month = {},
 note = {0000-0002-1171-8603, Spectroscopic studies of emissions released from tungsten ions combined with a pellet injection technique have been conducted in the Large Helical Device. The tungsten Unresolved Transition Array (UTA) spectrum was observed in the wavelength ranges of extreme ultraviolet (EUV) 6–60 Å and 130–340 Å, and the electron temperature dependence of the UTA spectral shape was investigated in the electron temperature region < 4.3 keV. The UTAs of W24+–W33+ at 20–33 Å, W37+–W42+ at 45–47 Å, W27+–W29+ at 48–55 Å, and W7+– W27+ at 170–210 Å were observed. Unidentified UTAs were also found at 230–270 Å and 280–320 Å. As the electron temperature increased further above 4 keV, the W37+–W42+ UTA at 45–47 Å was maintained, while the other UTAs became less intense.},
 title = {EUV spectral shape variation of tungsten unresolved transition arrays in electron temperature range of 2–4 keV observed in the Large Helical Device},
 volume = {2439},
 year = {2023}
}