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输运过程和各种不稳定性的物理机制的研究是受控热核聚变的重要课题之一。理论模型建立在假定这些过程与等离子体电流密度分布或q(r)分布相联系的基础上,然而这却是最难测量的等离子体参数之一。目前,有一些技术用于q(r)分布的测量,例如塞曼效应、法拉第旋转、非相干散射光的谱线调制、运动斯塔克效应以及磁化粒子的直接观察等。如果要运用这些技术获得更进一步的数据,就必须使用更加专门的诊断。要在HL-1M装置上进行这样的诊断目前还有一些困难。
The study of the transport process and various physical mechanisms of instability is one of the important topics of controlled thermonuclear fusion. The theoretical model is based on the assumption that these processes are related to plasma current density distribution or q (r) distribution, however this is one of the most difficult to measure plasma parameters. Currently, there are techniques for measuring q (r) distributions such as Zeeman, Faraday rotation, line modulation of incoherent light, kinematic Stark effect, and direct observation of magnetized particles. If you want to use these techniques to obtain further data, you must use a more specialized diagnosis. There are currently some difficulties in making such a diagnosis on HL-1M devices.