2025-06-04 京都大学
概略図：ペレット入射によってプラズマの温度・密度や磁力線構造が再編される様子
＜関連情報＞
- https://www.kyoto-u.ac.jp/ja/research-news/2025-06-04
- https://www.kyoto-u.ac.jp/sites/default/files/2025-05/web_2505_Inagaki-9cdf963a868d1afcc0edd4559861aa16.pdf
- https://www.nature.com/articles/s41598-025-00993-5
ヘリオトロンJにおけるペレット入射後のプラズマ再構成のダイナミクス Dynamics of plasma reconfiguration after pellet injection in Heliotron J
K. Ogihara,S. Inagaki,S. Kado,R. Matsutani,G. Motojima,S. Kobayashi,F. Kin,S. Ohshima,T. Minami,S. Konoshima,T. Mizuuchi,H. Okada & K. Nagasaki
Scientific Reports Published:13 May 2025
DOI:https://doi.org/10.1038/s41598-025-00993-5
Abstract
Because of the many degrees of freedom in magnetized plasmas, the plasma is largely reconfigured when the plasma achieves a non-equilibrium steady state in response to changes in the internal environment. Here we report observations of a plasma reconfiguration process when the density is increased by pellet injection in Heliotron J. The plasma shows no adiabatic response to pellet injection and achieves an improved confinement during the reconfiguration process. It was found that plasma shrinking and expansion arose and the magnetic field line structure in the divertor region also changed in the plasma reconfiguration process.
