Low-energy, high-current, ion source with cold electron emitter

被引：1
|
作者：
Vizir, A. V. [1 ,2 ]
Shandrikov, M. V. [1 ]
Yushkov, G. Yu. [1 ]
Oks, E. M. [1 ,2 ]
机构：
[1] Russian Acad Sci, Inst High Current Elect, Tomsk 634055, Russia
[2] State Univ Control Syst & Radioelect, Tomsk 634050, Russia
来源：
REVIEW OF SCIENTIFIC INSTRUMENTS | 2012年 / 83卷 / 02期
基金：
俄罗斯基础研究基金会;
关键词：
Cathodes - Ionization of gases - Electron sources - Electrons;
D O I：
10.1063/1.3653870
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
An ion source based on a two-stage discharge with electron injection from a cold emitter is presented. The first stage is the emitter itself, and the second stage provides acceleration of injected electrons for gas ionization and formation of ion flow (<20 eV, 5 A dc). The ion accelerating system is gridless; acceleration is accomplished by an electric field in the discharge plasma within an axially symmetric, diverging, magnetic field. The hollow cathode electron emitter utilizes an arc discharge with cathode spots hidden inside the cathode cavity. Selection of the appropriate emitter material provides a very low erosion rate and long lifetime. (C) 2012 American Institute of Physics. [doi:10.1063/1.3653870]
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页数：3
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