电子的电场反转俘获和费米机制
Electron trapping by electric field reversal and Fermi mechanism
摘要：
本文研究了直流放电负辉光中电场反转的存在、位置、俘获电子的阱宽、慢电子散射时间以及俘获时间。基于应力-能量张量分析，我们显示了井的固有不稳定性。我们认为，费米机制是一个可能的过程，泵出电子通过，并将这种现象与静电等离子体不稳定性。还得到了囚禁电子的幂律分布函数。导出了可用于从几何尺寸和放电的操作参数计算这些特性的解析表达式。
英文摘要：
We investigate the existence of the electric field reversal in the negative glow of a dc discharge, its location, the width of the well trapping the electrons, the slow electrons scattering time, and as well the trapping time. Based on a stress-energy tensor analysis we show the inherent instability of the well. We suggest that the Fermi mechanism is a possible process for pumping out electrons from the through, and linking this phenomena with electrostatic plasma instabilities. A power law distribution function for trapped electrons is also obtained. Analytical expressions are derived which can be used to calculate these characteristics from geometrical dimensions and the operational parameters of the discharge.
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