Electron Ionization of Size-Selected Positively and Negatively Charged Helium Droplets

被引：4
|
作者：
Laimer, Felix [1 ]
Zappa, Fabio [1 ]
Gruber, Elisabeth [1 ]
Scheier, Paul [1 ]
机构：
[1] Univ Innsbruck, Inst Ionenphys & Angew Phys, Tech Str 25, A-6020 Innsbruck, Austria
来源：
ATOMS | 2021年 / 9卷 / 04期
基金：
奥地利科学基金会;
关键词：
electron ionization; electron capture; helium droplets; cross section; IMPACT IONIZATION; CROSS-SECTIONS; INFRARED-SPECTROSCOPY; IONS; FRAGMENTATION; COLLISIONS; MOLECULES; CLUSTERS; CAPTURE; ATOMS;
D O I：
10.3390/atoms9040074
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
A beam of size-selected charged helium droplets was crossed with an electron beam, and the ion efficiency curves for the product droplets in all different charge states were recorded. We estimate that the selected helium droplets on their passage through the electron beam are hit by several hundred electrons which can interact with the individual He atoms of the droplets. Reaction channels corresponding to the removal or capture of up to eight electrons were identified, and in all cases, inelastic scattering and the formation of metastable helium played a significant role.
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页数：15
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