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ＨＴ６Ｍ托卡马克通过边界欧姆加热实现了改善约束的Ｈ模，利用中性粒子测量方法成功地研究了等离子体Ｈ模放电的中性粒子变化．观察到边界欧姆加热Ｈ模放电期间从等离子体逃逸的中性粒子比纯欧姆加热明显减少；约束改善后等离子体中心热区的中性原子密度下降，得到了反映等离子体约束改善的中性粒子特征．实验结果与其他诊断进行了比较和讨论
HT 6M Tokamak improved the confinement of the H-mode by the ohmic heating at the boundary, and the neutron particle change of plasma H-mode discharge was successfully studied by the neutral particle measurement method. It is observed that the neutral particles escaping from the plasma during the H-mode discharge at the boundary ohmic heating significantly decrease compared with the pure Ohmic heating; the neutral atom density in the hot central region of the plasma decreases after the constraint is improved, and the neutral particles that reflect the improvement of plasma confinement are obtained feature. The experimental results are compared and discussed with other diagnoses