Observation of Fishbone-Like Instabilities Excited by Energetic Electrons on the HL-2A Tokamak

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2008,（10）
• 页码范围: 3708-3711
• 页数: 4页
• 语种: 英文

摘要

Strong burst of an internal kink mode is observed on the HL-2A tokamak. Features of the fishbone-like mode are presented. The fishbone-like instabilities can be driven during electron cyclotron resonance heating (ECRH) and can be excited on the high field side (HFS) by ECRH. It is found for the first time that the modes also present themselves on the low field side (LFS) during ECRH. Experiments show that the energetic electrons with energy of 35-70 keV play a dominant role in the excitation mechanism, and the experimental results are also consistent with our calculation ones.