Year: 2024
Type: article
Abstract: We measured detailed current sheet dynamics of two merging high-guide field flux tubes using newly developed high-resolution magnetic field measurement by Printed-Circuit-Board (PCB) coils in TS-6 merging tokamak experiment. We found that the sheet ejection occurred twice, increasing their merging ratio, the toroidal current density Jt, the toroidal electric field Et, and the effective resistivity η of current sheet. The possible explanation for this result is that the mass ejection from the current sheet drives the reconnection inflow, due to the mass conservation law. Especially, after the second sheet ejection, the effective resistivity increased significantly, probably because the sheet thickness compressed up to the ion Larmor radius.
Source: Plasma and Fusion Research
Authors: Yuka DOKE, Yasushi ONO
Institution: The University of Tokyo
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: diamond
OpenAlex ID: W4405588351