New high luminosity “double toroidal” electron spectrometer
New high luminosity “double toroidal” electron spectrometer
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DOI：
10.1063/1.1148017
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发表时间：
1997-10
影响因子：
1.6
通讯作者：
C. Miron;M. Simon;N. Leclercq;P. Morin
中科院分区：
文献类型：
--
作者：
C. Miron;M. Simon;N. Leclercq;P. Morin
本文介绍了一种新颖的、高透射率的、静电的“双环形”电子能量分析器的设计和工作。双环形分析器允许高分辨率和高亮度的同时测量的动能，和角分布的电子，使用一个二维位置敏感探测器。从分析和数值电子轨迹计算推导出的电极的确切形状。电子检测器是基于电荷分析和优化，以达到100 kHz的计数率。用N_2O在氮K壳层附近（hν=401 eV）激发后的共振俄歇衰变谱和Kr在hν=91.2 eV的3d ~（5/2）→ 5 p激发后的共振俄歇衰变谱说明了分析器的实际性能。测量到的“光学扩展量”为通过能量的15%，以及分辨率（Ep/δE）为100。
In this article we describe the design and the operation of an original, high transmission, electrostatic “double toroidal” electron energy analyzer. The double toroidal analyzer allows the high resolution and high luminosity simultaneous measurement of the kinetic energy, and angular distribution of electrons, using a two-dimensional position sensitive detector. The exact shape of the electrodes is deduced from both analytical and numerical electron trajectory calculations. The electron detector is based on a charge analysis and optimized to attain a 100 kHz counting rate. The actual performances of the analyzer are illustrated with spectra obtained after resonant Auger decay of N2O excited around the nitrogen K shell (hν=401 eV), and of Kr after 3d5/2→5p excitation at hν=91.2 eV. A “etendue” of 15% of the pass energy, as well as a resolving power (Ep/δE) of 100 were measured.