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A DROPLET EMISSION MECHANISM IN LIQUID-METAL ANODES

被引：19
作者：
MAIR, GLR
机构：
[1] University of Athens, Department of Physics, Laboratory of Mechanics, Panepistimiopolis, Athens, 6759
来源：
JOURNAL OF PHYSICS D-APPLIED PHYSICS | 1990年 / 23卷 / 09期
关键词：
D O I：
10.1088/0022-3727/23/9/016
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
A droplet emission mechanism is proposed for the operation of liquid metal ion sources in the so-called ‘droplet mode'. The model is based on experimental observations of current oscillograms as a function of beam angle, as well as emission frequency spectra, and is supported by theoretical arguments. It is suggested that the main droplet emission mode is one where the jet-like apex of the cone-shaped liquid anode is driven unstable by oscillation of the cone. Since jet break-up times are much shorter than the cone oscillation period, the cone oscillation frequency determines the frequency of droplet emission. © 1990 IOP Publishing Ltd.
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页码：1239 / 1243
页数：5
相关论文
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