The possibility of creating adjustable electric fields in plasma opens up a wide range of applications for plasma technologies. However, the question with regards to the conditions, under which the plasma potential along the magnetic field line, resting on the electrode, repeats the potential of this electrode, turns out to be quite complex. In the present paper, an axially symmetric system with a magnetic field directed along an axis is considered. At the ends of the system, there are electrodes with a given negative potential. A simplified model of the system is proposed, taking into account the near-electrode voltage drop and continuity of the current in the circuit of the end electrodes. Within the framework of this model, an analytical formula is derived for the plasma potential on the axis of such a system, depending on its parameters. This formula can serve as a guide for experimenters when choosing experiment parameters, the purpose of which are to create a negative radi...

中文翻译：

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带有磁化电子的圆柱形等离子体柱中的负电势

在等离子体中产生可调电场的可能性打开了等离子体技术的广泛应用。然而，关于条件的问题变得非常复杂，在这种情况下，沿着磁场线的等离子体电势位于电极上，重复该电极的电势。在本文中，考虑了具有沿轴指向的磁场的轴对称系统。在系统的末端，有具有给定负电位的电极。考虑到近电极电压降和端电极电路中电流的连续性，提出了系统的简化模型。在该模型的框架内，根据其系统参数，推导了此类系统轴上的等离子体电势的解析公式。