Novel design of a 'spherical' electron spectrometer
Novel design of a 'spherical' electron spectrometer
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“球形”电子能谱仪的新颖设计
DOI：
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发表时间：
1979
期刊：
影响因子：
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通讯作者：
K. Jost
中科院分区：
文献类型：
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作者：
K. Jost
本文介绍了一种“模拟”球形电子能谱仪的设计过程。该装置在射束轨迹的区域中具有球形等势，而其电极是非球形的。新装置的电子光学性质与球形谱仪的电子光学性质非常接近。然而，它的几何宽度只有传统半球光谱仪的三分之一。由于其简单的电极结构，网格或波纹电极可以很容易地用于抑制背景电子。新仪器的原型被用作电子单色仪。实现了小于25 meV的能量扩散。
The design procedure of a 'simulated' spherical electron spectrometer is described. This device has spherical equipotentials in the region of the beam trajectories, whereas its electrodes are non-spherical. The electron optical properties of the new device are very close to those of a spherical spectrometer. Its geometric width, however, is only about one-third that of a conventional hemispherical spectrometer. Because of its simple electrode structure, gridded or corrugated electrodes can be used easily to suppress background electrons. A prototype of the new instrument was employed as an electron monochromator. An energy spread of less than 25 meV was achieved.