Spectroscopic measurement of increases in hydrogen molecular rotational temperature with plasma-facing surface temperature and due to collisional-radiative processes in tokamaks

• Published in: Nuclear fusion Vol. 63; no. 9
• Main Authors: Yoneda, N., Shikama, T., Scotti, F., Hanada, K., Iguchi, H., Idei, H., Onchi, T., Ejiri, A., Ido, T., Kono, K., Peng, Y., Osawa, Y., Yatomi, G., Kidani, A., Kudo, M., Hiraka, R., Takeda, K., Bell, R. E., Maan, A., Boyle, D. P., Majeski, R., Soukhanovskii, V. A., Groth, M., McLean, A. G., Wilcox, R. S., Lasnier, C., Nakamura, K., Nagashima, Y., Ikezoe, R., Hasegawa, M., Kuroda, K., Higashijima, A., Nagata, T., Shimabukuro, S., Niiya, I., Sekiya, I., Hasuo, M.
• Format: Journal Article
• Language: English
• Published: IAEA IOP Publishing 27.07.2023

Abstract Spatially resolved rotational temperature of ground state hydrogen molecules desorbed from plasma-facing surface was measured in QUEST, LTX-β, and DIII-D tokamaks, and the increases of the rotational temperature with the surface temperature and due to collisional-radiative processes in the...