A MULTIDETECTION, MULTICOINCIDENCE SPECTROMETER FOR (E, 2E) AND (E, 3E) ELECTRON IMPACT IONIZATION MEASUREMENTS
A MULTIDETECTION, MULTICOINCIDENCE SPECTROMETER FOR (E, 2E) AND (E, 3E) ELECTRON IMPACT IONIZATION MEASUREMENTS
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DOI：
10.1063/1.1149131
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发表时间：
1998-10
影响因子：
1.6
通讯作者：
A. Duguet;A. Lahmam-Bennani;M. Lecas;B. E. Marji
中科院分区：
文献类型：
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作者：
A. Duguet;A. Lahmam-Bennani;M. Lecas;B. E. Marji
本文介绍了一种用于电子碰撞（e,2e）单电离与(e, (3-1)e或（e,3e）双电离重合研究的新型光谱仪。该系统是基于两个双环形分析仪的喷射电子和一个圆柱形静电分析仪的散射电子。它允许在几乎整个碰撞平面上测量喷射电子的角度和能量分布，使用双二维位置敏感探测器。描述了光谱仪的设计和操作，特别强调了系统的成像特性。讨论了光谱仪的性能（能量和角分辨率）和校准，并给出了稀有气体（e,2e）、e、（3-1）e和（e,3e）实验的样品结果。
A new spectrometer for the coincidence study of (e,2e) single ionization, and e,(3-1)e or (e,3e) double ionization by electron impact is described. The system is based on two double toroidal analyzers for the ejected electrons and a cylindrical electrostatic analyzer for the scattered electrons. It allows angular and energy distributions of the ejected electrons to be measured over almost the totality of the collision plane, using dual two-dimensional position sensitive detectors. The design and operation of the spectrometer is described with a special emphasis on the imaging properties of the system. The performance (energy and angular resolutions,…) and the calibration of the spectrometer are discussed and sample results for (e,2e), e,(3-1)e and (e,3e) experiments on the rare gases are presented.