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本文通过测量ＨＴ─６Ｂ等离子体中ＯⅥ的线辐射强度随放电参数的变化，利用杂质输运分析的数值结果，给出了在等离子体参数很大的变化范围内［ｎｅ＝（０．２－２．０）×１０（１３），ｑａ＝３－８．５］Ｚ（ｅｆｆ）及杂质相对浓度随放电参数的变化规律。在外加共振螺旋磁场（ＲＨＦ）抑制外撕裂模的实验中，ＯⅢ、ＣⅢ的线辐射测量表明ＲＨＦ具有改善杂质约束的迹象，此时光谱信号中反映出的相应频率的粒子扰动也被ＲＨＦ所抑制。
In this paper, by measuring the variation of the line radiation intensity of O VI in HT-6B plasma with the discharge parameters and using the numerical results of impurity transport analysis, it is shown that within the wide range of plasma parameters [ne = (0.2- 2.0) × 10 (13), qa = 3-8.5] Z (eff) and the relative concentration of impurities with the discharge parameters. In the experiment of external tear mode with resonant helical magnetic field (RHF), the line radiation measurements of OIII and CIII showed that RHF showed the sign of improving the impurity confinement. At this time, the perturbation of the corresponding frequency reflected in the spectral signal was also detected by RHF inhibition.