论文标题
高频电场波动中航天电势的电子密度估计
Estimation of the electron density from spacecraft potential during high frequency electric field fluctuations
论文作者
论文摘要
航天电势通常用于推断电子密度，其时间分辨率要比等离子仪器通常可能更高。但是，最近Torkar等人的两项研究。 2017和Graham等。 2018年表明，外部电场也可以通过增强光电子从表面逃脱来对航天器潜力产生影响。因此，如果在具有较大电场的事件中使用源自航天电势的电子密度，则将估计该估计值，并且用户将看到电场的影响而不是密度扰动。本文的目的是提出一种去除电场效应的方法，以允许即使在诸如Langmuir Wave或上部混合波的大幅度波动事件（例如大幅度波）事件中，从航天器潜力衍生出的密度也可以使用。
Spacecraft potential has often been used to infer electron density with much higher time resolution than is typically possible with plasma instruments. However, recently two studies by Torkar et al. 2017 and Graham et al. 2018 have shown that external electric fields can also have an effect on the spacecraft potential by enhancing photoelectron escape from the surface. Consequently, should the electron density derived from the spacecraft potential be used during an event with a large electric field, the estimation would be contaminated and the user would see the effects of the electric field rather than density perturbations. The goal of this paper is to propose a method to remove the electric field effects to allow the density derived from spacecraft potential to be used even during large amplitude wave events such as Langmuir waves or upper hybrid waves.
