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阐述了中性束加热等离子体的物理过程,并利用基于不同物理模型下的两种计算方法对中性束在等离子体中的透射衰减情况进行了计算、分析和比较,给出了束在等离子体中的衰减与束能量、等离子体参数及杂质情况的关系及在HL-1M等离子体典型参数下的计算结果。在考虑了中性束与等离子体(含杂质)相互作用多级过程的数值计算中,其物理模型考虑了激发、碰撞和辐射去激发、被激发原子的Lorentz场电离以及电离、电荷交换等多种过程。在利用简化物理模型的分析计算中,仅考虑了中性束与等离子体和杂质粒子的
The physical process of neutral beam heating plasma is expounded, and the transmission attenuation of neutral beam in plasma is calculated, analyzed and compared by two calculation methods based on different physical models. The relation between attenuation in body and beam energy, plasma parameters and impurities and the calculation results under the typical parameters of HL-1M plasma. In the numerical calculation of multistage processes considering the interaction of neutral beam with plasma (including impurities), the physical model considers excitation, collision and radiation de-excitation, Lorentz field ionization of excited atoms and ionization and charge exchange Kind of process. In the analysis and calculation using a simplified physical model, only the neutral beam and the plasma and impurity particles