KT-5C托卡马克射频波加热实验用回路天线的负载阻抗测量

MEASUREMENT AND STUDY OF HARD X RAY BREMSSTRAHLUNG EMISSION WITH LHCD IN THE HL 1M TOKAMAK

针对ＫＴ－５Ｃ托卡马克装置等离子体的射频离子回旋波加热实验，本文给出一种回路天线负载阻抗的简便测量方法和测量结果。该方法的特点是，只涉及射频电流相对比值的测量，不要求专用设备，因此使物理量的标定、数据记录和处理都变得简单易行。

A new HgI 2 type semiconductor has been used to detect the hard X rays from the core of the HL 1M tokmak plasma, of which the energy ranged from 15 to 150keV. The results show that the radiation flux is decreased during lower hybrid current drive (LHCD), while the bremsstrahlung radiation coming from the limiter increased, recorded with a NaI detector. The measurements of X ray spectra indicate that there are energetic tail electrons in non maxwellian distribution during LHCD, and their perpendicular temperature is about 15 to 30keV with a maximum up to 150keV.