An experimental instrument is set up to observe the energy distribution of electrons (mainly secondary electrons) on the anode screen in the field emission.
我们搭建了一套实验装置，用来观察场发射中到达阳极屏上的电子(主要是二次电子)的能量分布。
It is discovered that driven by the super strong laser field, the oscillation of electrons, due to their relativistic motion, will generate harmonic emission.
研究发现，在超强激光作用下电子运动的相对论效应可导致高农谐波辐射。
The electron source may emit electrons either via field emission or thermionic emission.
该电子源可经由场发射或热离子发射来发射电子。
We have derived the formulas of harmonic spontaneous emission power density, small signal gain of this undulator FEL and the coupling coefficients between the electrons and the radiation field.
导出了这种新型摇摆场结构自由电子激光高次谐波的自发辐射功率密度和小信号增益公式。以及电子与辐射场的耦合系数的表达式。
The reason, Fang says, is simple: Carbon nanotubes have a very low field-emission voltage, which means lower voltage is needed to emit the electrons that produce an image.
尤其是它具有大的长径比，低的功函数，良好的导电性和纳米级的尖端，使其能够在相对较低的电压下就能长时间地发射电子，因此被认为是一种优良的 场 致 发射阴极。
The reason, Fang says, is simple: Carbon nanotubes have a very low field-emission voltage, which means lower voltage is needed to emit the electrons that produce an image.
尤其是它具有大的长径比，低的功函数，良好的导电性和纳米级的尖端，使其能够在相对较低的电压下就能长时间地发射电子，因此被认为是一种优良的 场 致 发射阴极。
应用推荐