New setup for angular distribution measurements of Auger electrons from fixed in space molecules
New setup for angular distribution measurements of Auger electrons from fixed in space molecules
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DOI：
10.1063/1.1327310
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发表时间：
2000-11
影响因子：
1.6
通讯作者：
R. Guillemin;E. Shigemasa;K. Guen;D. Céolin;C. Miron;N. Leclercq;K. Ueda;P. Morin;M. Simon
中科院分区：
文献类型：
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作者：
R. Guillemin;E. Shigemasa;K. Guen;D. Céolin;C. Miron;N. Leclercq;K. Ueda;P. Morin;M. Simon
提出了一种新的实验装置，用于测量空间固定分子发射的能量选择俄歇电子的角分布。该系统基于两个相同的离子探测器，相对于入射辐射的极化轴分别放置0°和90°的小角度接受，以及一个高亮度的双环电子分析器和位置灵敏探测相结合。该设置允许同时选择σ和π电离通道的分子排列，并提供输出电子的能量和射出角度测量。讨论了该方法在能量和角度分辨率方面的性能，以及标定过程。给出了在C1S阈值以上电离一氧化碳的样品结果。
A new experimental setup for measurement of the angular distributions of energy selected Auger electrons emitted from fixed in space molecules is presented. The system is based on two identical ion detectors with a small angular acceptance placed at 0° and 90° relative to the polarization axis of the incident radiation, and a high luminosity double-toroidal electron analyzer combined with position sensitive detection. This setup allows selection of the molecular alignment for σ and π ionization channels simultaneously and provides an energy and ejection angle measurement of the outgoing electron. The performance in terms of energy and angular resolution, as well as the calibration procedure, are discussed. Sample results obtained on the carbon monoxide ionized above the C 1s threshold are presented.