Kinetic theory has been employed to investigate the magnetized plasma-sheath structure and its characteristics in the presence of more than one species of negatively charged particles: hot electrons, cold electrons, and negative ions. The cold electrons and negative ions are considered to obey a Maxwellian distribution, whereas the hot electrons follow a truncated Maxwellian distribution. The Bohm sheath condition has been extended for the case of more than one species of negatively charged particles, in which the concentration of hot electrons has a crucial role in achieving the Bohm velocity. The thermal motion of hot electrons is much higher compared to cold electrons and negative ions, such that the variation of hot electron concentrations and the temperature ratio of hot to cold electrons play a key role in the determination of the plasma-sheath parameters: particle densities, electrostatic potential, the flow of positive ions towards the wall, and sheath thickness. We have estimated the deviation of the resultant drift velocity of positive ions on the plane perpendicular to the wall from the parallel component at the presheath–sheath interface. It is found that the deviation between the two velocity components increases with an increase in the obliqueness of the magnetic field. Furthermore, the results obtained from the kinetic trajectory simulation model are compared with the results obtained using a fluid model; the results are qualitatively similar, although the potential varies by less than 4% in terms of the magnitude at the wall.

动力学理论已被用于研究存在一种以上带负电粒子时的磁化等离子体鞘结构及其特性：热电子、冷电子和负离子。冷电子和负离子被认为服从麦克斯韦分布，而热电子服从截断的麦克斯韦分布。玻姆鞘条件已扩展到一种以上带负电粒子的情况，其中热电子的浓度在实现玻姆速度方面起着至关重要的作用。与冷电子和负离子相比，热电子的热运动要高得多，因此，热电子浓度的变化和冷热电子的温度比在确定等离子体鞘参数中起着关键作用：粒子密度、静电势、正离子流向壁和鞘厚度。我们已经估计了垂直于壁的平面上正离子的合成漂移速度与预鞘 - 鞘界面处的平行分量的偏差。发现两个速度分量之间的偏差随着磁场倾斜度的增加而增加。此外，从动力学轨迹模拟模型获得的结果与使用流体模型获得的结果进行了比较；结果在性质上是相似的，