A compact, versatile low-energy electron beam ion source.
A compact, versatile low-energy electron beam ion source.
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DOI：
10.1063/1.4826687
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发表时间：
2014-02
期刊：
影响因子：
--
通讯作者：
G. Zschornack;J. König;M. Schmidt;A. Thorn
中科院分区：
文献类型：
--
作者：
G. Zschornack;J. König;M. Schmidt;A. Thorn
介绍了一种新型的紧凑型电子束离子源--德累斯顿EBIT-LE，它是一种工作在低电子束能量下的离子源。EBIT-LE在100 eV至几keV的电子能量范围内工作，并且可以容易地修改为也在高达15 keV的更高电子束能量下工作的EBIT。我们表明，取决于电子束能量，从几毫安的低能量制度到约40毫安的高能量制度的电子束电流是可能的。提出了EBIT-LE的技术解决方案和第一次实验结果。在离子提取实验中，一个稳定的生产低和中等带电离子的电子束能量低于2千电子伏的证明。此外，X射线光谱测量证实了使用该机器作为低电子能量激发离子的X射线源的可能性。
A new compact Electron Beam Ion Source, the Dresden EBIT-LE, is introduced as an ion source working at low electron beam energies. The EBIT-LE operates at an electron energy ranging from 100 eV to some keV and can easily be modified to an EBIT also working at higher electron beam energies of up to 15 keV. We show that, depending on the electron beam energy, electron beam currents from a few mA in the low-energy regime up to about 40 mA in the high-energy regime are possible. Technical solutions as well as first experimental results of the EBIT-LE are presented. In ion extraction experiments, a stable production of low and intermediate charged ions at electron beam energies below 2 keV is demonstrated. Furthermore, X-ray spectroscopy measurements confirm the possibility of using the machine as a source of X-rays from ions excited at low electron energies.