临界电离速度现象中的反常电阻
Anomalous Resistance in Critical Ionization Velocity Phenomena
摘要：
为了描述由霍尔电流的不连续性产生的电场，利用电荷守恒和欧姆定律得到三阶方程。这个方程的解决方案被用来模拟实验中检测到的电脉冲，旨在验证阿尔文的中性气体与磁化等离子体碰撞的临界电离速度的假设。与实验的定量协议和测量信号的主要特征下，假设不连续性背后的强异常电阻建模。显然，反常电阻是由于通过电场的小尺度调制捕获载流子而发生的。
英文摘要：
To describe the generation of the electric field by a discontinuity of the Hall current, an equation of the third order is obtained using the electric charge conservation and Ohm laws. The solutions of this equation are used to model the electric impulses detected in experiments aimed to verify Alfven's hypothesis on the critical ionization velocity at collisions of neutral gas with magnetized plasma. A quantitative agreement with experiment is attained and the main features of measured signals are modeled under an assumption on the strong anomalous resistance behind the discontinuity. Apparently, the anomalous resistance occurs due to trapping the current carriers by a small-scaled modulation of the electric field.
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