KT-5B托卡马克装置上离子伯恩斯坦波激发条件的实验研究

本文介绍了在KT-5B托卡马克装置上,线性离子伯恩斯坦波的激发与边缘离子密度涨落、托卡马克放电参数以及发射天线位置之间关系的实验研究结果。实验表明,边缘离子密度涨落过大,将使离子伯恩斯坦波激发变得困难;正常的托卡马克运行的放电参数范围与有效激发离子伯恩斯坦波的参数范围一致;对纵环电流天线,可能存在静电模转换激发和直接激发这两种离子伯恩斯坦波激发方式共存的情况。关键词：

EXCITATION CONDITIONS OF ION BERNSTEIN WAVE IN KT-5B TOKAMAK

In this paper, the research results of the relations between the excitation stage of linear ion Bernstein wave (IBW) and the edge ion density fluctuation, the discharge parameters of tokamak and the antenna position in KT-5B tokamak are presented. The experiments show that large edge ion density fluctuation will make it difficult to excite IBW, the ranges of discharge parameters for optimally exciting IBW are consistent with those for normal operation of KT-5B tokamak. We find that for our toroidal current antenna, there may exist two ways of excitation, i.e. direct excitation and excitation through the electrostatic mode conversion process.