首页|Experimental Investigations of Quasi-Coherent Micro-Instabilities in J-TEXT Ohmic Plasmas

Experimental Investigations of Quasi-Coherent Micro-Instabilities in J-TEXT Ohmic Plasmas

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Quasi-coherent micro-instabilities is one of the key topics of magnetic confinement fusion.This work focuses on the quasi-coherent spectra of ion temperature gradient(ITG)and trapped-electron-mode instabilities using newly developed far-forward collective scattering measurements within ohmic plasmas in the J-TEXT tokamak.The ITG mode is characterized by frequencies ranging from 30 to 100 kHz and wavenumbers(kθρs)less than 0.3.Beyond a critical plasma density threshold,the ITG mode undergoes a bifurcation,which is marked by a reduction in frequency and an enhancement in amplitude.Concurrently,enhancements in ion energy loss and degradation in confinement are observed.This ground-breaking discovery represents the first instance of direct experimental evidence that establishes a clear link between ITG instability and ion thermal transport.

石鹏、庄革、程芝峰、高丽、周乙楠、刘永、罗景庭、李景春

展开 >

Institute of Plasma Physics,Chinese Academy of Sciences,Hefei 230031,China

International Joint Research Laboratory of Magnetic Confinement Fusion and Plasma Physics,State Key Laboratory of Advanced Electromagnetic Engineering and Technology,School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan 430074,China

Department of Engineering and Applied Physics School of Physical Sciences,University of Science and Technology of China,Hefei 230026,China

Shenzhen Key Laboratory of Nuclear and Radiation Safety,Institute for Advanced Study in Nuclear Energy&Safety,College of Physics and Optoelectronic Engineering,Shenzhen University,Shenzhen 510640,China

展开 >

国家自然科学基金国家自然科学基金Shenzhen Municipal Collaborative Innovation Technology Program-International Science and Technology(Science and Technology)Cthe"Fourteenth Five-Year Plan"Basic Technological Research Project

020413124011575067GJHZ20220913142609017JSZL2022XXXX001

2024

10.1088/0256-307X/41/5/055201

中国物理快报(英文版)
中国科学院物理研究所,中国物理学会

中国物理快报(英文版)

CSTPCDEI
影响因子：0.515
ISSN：0256-307X
年,卷(期)：2024.41(5)
  • 31