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首页> 外文期刊>Journal of surface investigation: x-ray, synchrotron and neutron techniques >Modeling of Impact of the Field Electron Emission from the Cathode with an Insulating Film on the Voltage-Current Characteristic and Stability of the Low-Current Gas Discharge
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Modeling of Impact of the Field Electron Emission from the Cathode with an Insulating Film on the Voltage-Current Characteristic and Stability of the Low-Current Gas Discharge

机译：电压 - 电流特性与低电流特性的电压 - 电流特性和稳定性模拟励磁电子发射的影响

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摘要

A model of the low-current gas discharge at the presence of a thin insulating film on the cathode is formulated. It takes into account, along with the ion-electron emission from the cathode, also the field emission of electrons from the cathode metal substrate into the film under the influence of a strong electric field generated in insulator in the discharge. Motion of electrons in the film and their going out into the discharge volume is also calculated. The discharge parameters are found as functions of the discharge current density and it is shown that, unlike in the case of discharge with the metal cathode, the cathode effective secondary electron emission yield grows at its increase. As a result, the voltage-current characteristic of such discharge is falling, and this can be a cause of the experimentally observed its instability.
机译：配制在阴极上存在薄绝缘膜的低电流气体放电模型。 考虑到，除了来自阴极的离子电子发射，还在放电中的绝缘体中产生的强电场的影响下，来自阴极金属基板的电子来自阴极金属基板的场发射。 还计算了薄膜中的电子运动和它们进入放电体积。 发现放电参数作为放电电流密度的功能，并且显示出与用金属阴极放电的情况不同，阴极有效的二次电子发射产量在其增加时生长。 结果，这种放电的电压 - 电流特性正在下降，这可能是实验观察到其不稳定性的原因。

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