Performance of a short "magnetic bottle" electron spectrometer
Performance of a short "magnetic bottle" electron spectrometer
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DOI：
10.1063/1.4729256
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发表时间：
2012-06-01
影响因子：
1.6
通讯作者：
Hergenhahn, U.
中科院分区：
文献类型：
--
作者：
Mucke, M.;Foerstel, M.;Hergenhahn, U.
在本文中，描述了一种新构造的磁瓶型电子能谱仪。该仪器是使用同步加速器辐射测量自由团簇电子能谱的装置的一部分。记录了氩和氦的外价光电子能谱，以研究光谱仪的特征。能量分辨率 (E/Delta E) 已被发现与 30 类似。利用电子的静电延迟，它可以增加到至少 110。传输作为动能的函数是平坦的，并且不会因高达 80% 的初始动能的延迟而受到太大损害。我们测得的检测效率最有可能为 0.6(-0.1)(+0.05)，但至少为 0.4。还讨论了磁体对准测试和轨迹模拟的结果。 [http://dx.doi.org/10.1063/1.4729256]
In this article, a newly constructed electron spectrometer of the magnetic bottle type is described. The instrument is part of an apparatus for measuring the electron spectra of free clusters using synchrotron radiation. Argon and helium outer valence photoelectron spectra have been recorded in order to investigate the characteristic features of the spectrometer. The energy resolution (E/Delta E) has been found to be similar to 30. Using electrostatic retardation of the electrons, it can be increased to at least 110. The transmission as a function of kinetic energy is flat, and is not impaired much by retardation with up to 80% of the initial kinetic energy. We have measured a detection efficiency of most probably 0.6(-0.1)(+0.05), but at least of 0.4. Results from testing the alignment of the magnet, and from trajectory simulations, are also discussed. [http://dx.doi.org/10.1063/1.4729256]