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- Title
Interaction between GAMs and Mean Flow Shear During SMBI Injection into HL-2A Tokamak.
- Authors
Wang, M. Y.; Zhou, C.; Liu, A. D.; Zhuang, G.; Feng, X.; Zhang, J.; Liu, Z. Y.; Ji, J. X.; Zhong, X. M.; Cheng, J.; Chen, C. Y.
- Abstract
The interactions among geodesic acoustic modes (GAMs), mean flow, and mean flow shear were investigated using Langmuir probe arrays under periodic supersonic molecular beam injection (SMBI) during L-mode discharges in HL-2A tokamak. Results of the SMBI fueling process can be described as follows. In Phase I, immediately following beam injection, the electric field (Er) and temperature (Te) were found to be the most sensitive plasma parameters and decreased abruptly with an increase in the intensity of the turbulence. In Phase II, Er increased significantly, and the frequency of the GAMs also increased. In Phase III, Er gradually increased until the next SMBI pulse commenced, whereas the intensity of the GAMs decreased.
- Subjects
SHEAR flow; TOKAMAKS; PLASMA turbulence; MOLECULAR beams; LANGMUIR probes; ELECTRIC fields
- Publication
Plasma Physics Reports, 2022, Vol 48, Issue 4, p319
- ISSN
1063-780X
- Publication type
Article
- DOI
10.1134/S1063780X22040158