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首页> 外文期刊>Review of Scientific Instruments >Electron Emissive Surface Electric Field Meter
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Electron Emissive Surface Electric Field Meter

机译：电子发射表面电场仪

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摘要

The performance of a surface electric field strength meter, utilizing a broad unfocused beam of electrons, has been evaluated analytically and experimentally. The meter is capable of measuring E fields up to 100 V/cm and possesses a sensitivity of ∼0.1 V/cm in the field regime near E=0. The meter response to time varying electric fields is limited by the finite transit time (≪10-7 sec) of the electrons from the source to the detector plates. Simple formulae for the errors introduced in the measurement of time dependent electric fields by finite transit time effects and by displacement currents are presented and indicate errors of ∼0.1 V/cm for E fields rising at 106 V/cm sec. Sensitivity of the meter to magnetic field perturbations along three mutually perpendicular directions has been evaluated. The meter response has been examined in a plasma flow simulating spacecraft through the ionosphere.
机译：已经通过分析和实验评估了利用宽广的未聚焦电子束的表面电场强度仪的性能。该仪表能够测量高达100 V / cm的E场，并且在E = 0附近的场域中具有〜0.1 V / cm的灵敏度。仪表对时变电场的响应受到电子从源到检测器板的有限传播时间（≪10-7秒）的限制。给出了由有限渡越时间效应和位移电流在随时间变化的电场的测量中引入的误差的简单公式，这些公式表明，对于以106 V / cm sec上升的E场，误差约为〜0.1 V / cm。已经评估了仪表对沿三个相互垂直的方向的磁场扰动的灵敏度。仪表响应已在通过电离层的等离子流模拟航天器中进行了检查。

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