A very low energy compact electron beam ion trap for spectroscopic research in Shanghai.
A very low energy compact electron beam ion trap for spectroscopic research in Shanghai.
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DOI：
10.1063/1.3675575
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发表时间：
2012-01
期刊：
影响因子：
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通讯作者：
J. Xiao;Z. Fei;Y. Yang;X. Jin;D. Lu;Y. Shen;L. Liljeby;R. Hutton;Y. Zou
中科院分区：
文献类型：
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作者：
J. Xiao;Z. Fei;Y. Yang;X. Jin;D. Lu;Y. Shen;L. Liljeby;R. Hutton;Y. Zou
本文报道了一种新型的紧凑型低能电子束离子阱SH-PermEBIT。这种电子束离子阱（EBIT）可以在60-5000 eV的电子能量范围内工作，电流密度高达100 a /cm(2)。这台机器的低能量极限创下了迄今为止所报道的记录。该EBIT的中心漂移管区域的磁场约为0.5 T，由永磁体和软铁产生。这个EBIT的设计允许调整电子枪的轴向位置在中心磁场的边缘场。这对于优化电子枪区域的磁场是非常重要的，特别是对于低电子束能量的操作，因为磁场强度是不可调节的永磁体。本文测量了几种条件下电子束的透射率和电子束宽度的上限。本文还报道了该EBIT在60、315、2800和4100 eV的电子能量下测试运行的光谱结果。
In this paper, a new compact low energy electron beam ion trap, SH-PermEBIT, is reported. This electron beam ion trap (EBIT) can operate in the electron energy range of 60-5000 eV, with a current density of up to 100 A/cm(2). The low energy limit of this machine sets the record among the reported works so far. The magnetic field in the central drift tube region of this EBIT is around 0.5 T, produced by permanent magnets and soft iron. The design of this EBIT allows adjustment of the electron gun's axial position in the fringe field of the central magnetic field. This turned out to be very important for optimizing the magnetic field in the region of the electron gun and particularly important for low electron beam energy operation, since the magnetic field strength is not tunable with permanent magnets. In this work, transmission of the electron beam as well as the upper limit of the electron beam width under several conditions are measured. Spectral results from test operation of this EBIT at the electron energies of 60, 315, 2800, and 4100 eV are also reported.