the emission of electrons from a surface that is bombarded by higher energy primary electrons
Secondary emission in physics is a phenomenon where primary incident particles of sufficient energy, when hitting a surface or passing through some material, induce the emission of secondary particles. The primary particles are often charged particles like electrons or ions.
例句与用法
1.
Multiplication effect of the secondary emission microwave electron gun 二次发射微波电子枪的倍增特性
2.
There may be secondary emission effects that depend on theplate material 而且还有屏极材料不同导致的二次发射现象。
3.
An electrode used in certain electron tubes to provide secondary emission 中间极，二次发射电极一种用于一定电子管作第二次发射电极
4.
The empirical formula in the process of the secondary emission is analyzed ; the stabilization condition of vacuum surface flashover is deduced . the physics image of the vacuum surface flashover is described with the seea theory 本文分析了二次电子发射过程的经验公式，推导了真空表面闪络的稳定条件，以seea理论的观点描述了真空表面闪络发生的物理图象。
5.
The dust charging associated with the electron beams including the secondary emission of dust can dominate the dust surface potential in the close cathode region . in this case , dust of the same size can levitate at two different positions in the cathode 另外还发现：在考虑极板有强电子束发射和尘埃粒子本身的二次电子发射时，同一大小的尘埃粒子能够悬浮在鞘层中两个不同的位置。
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