Effects of magnetic field gradient on ion beam current in cylindrical Hall ion source

Effects of magnetic field gradient on ion beam current in cylindrical Hall ion source
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圆柱形霍尔离子源磁场梯度对离子束电流的影响

DOI:
10.1063/1.2825625
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发表时间:
2007-12
影响因子:
3.2
通讯作者:
Cheng, Changming
Cheng, Changming
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Tang, Deli;Zhao, Jie;Chu, Paul K.;Wang, Lisheng;Pu, Shihao;Cheng, Changming

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本文研究了磁场梯度对磁镜场端部霍尔离子源束流的影响。在圆柱形霍尔离子源中,其中除了规则磁极之外的圆柱形磁环被缩短并居中插入,可以在环形阳极周围形成镜像磁场轮廓。一个积极的负可变的磁场梯度实验表明,以提高电离的电离效率是由不同的磁场梯度的影响。高电离导致放电电流到离子束电流的转换效率为60%。本文介绍了实验结果和解释的影响。
The effects of the magnetic gradient on the ion beam current in an end Hall-type ion source with a magnetic mirror field are investigated. In a cylindrical Hall ion source in which a cylindrical magnetic ring other than a regular magnetic pole is shortened and centrally inserted, a mirror magnetic field profile can be formed around the annular anode. A positive-negative variable magnetic gradient is shown experimentally to enhance ionization; the ionization efficiency is substantially affected by the different magnetic gradient. The high ionization results in 60% efficiency in the conversion of discharge current to ion beam current. The experimental results and interpretation of the effects are presented in this paper.
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