The Focusing and Deflecting Characters of e-Type Electron in Heterogeneous Magnetic Field

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The Focusing and Deflecting Characters of e-Type Electron in Heterogeneous Magnetic Field

更新时间：2025-07-09

- The Focusing and Deflecting Characters of e-Type Electron in Heterogeneous Magnetic Field
- Vol. 43, Issue 12, Pages: 111-114+119(2009)
- 作者机构：
  
  西安交通大学电子与信息工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN102
- Online First：10 December 2009，
  
  Published：2009
- 稿件说明：
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The Focusing and Deflecting Characters of e-Type Electron in Heterogeneous Magnetic Field[J]. 2009, 43(12): 111-114+119.
DOI：

The Focusing and Deflecting Characters of e-Type Electron in Heterogeneous Magnetic Field[J]. 2009, 43(12): 111-114+119. DOI：

摘要

利用永磁铁结构的偏转聚焦系统产生的非均匀磁场

改进了目前e型电子枪电子束偏转聚焦特性

同时缩小了枪体体积

减小了功耗.采用边界元法与等效磁荷法

模拟了偏转聚焦系统的非均匀磁场

再利用龙格-库塔法模拟出电子在该系统中的运动轨迹.为获得良好的聚焦特性

电子发射速度和发射位置应进行优化选择

同时电子束保持水平出射.研究结果表明:电子枪阳极板端点与阴极灯丝中心点保持水平可满足电子水平出射; 非均匀分布的磁场对e型电子枪中电子束具有良好的聚焦作用; 所设计的偏转聚焦系统在电子束流为50～100 mA时

束斑小于3 mm.

Abstract

The focusing and deflecting system is formed by heterogeneous magnetic field structure

which improves the focusing and deflecting characters of e-type electrons. The electron trajectory in the deflection system of electron gun is calculated by using the boundary element method and the Runge-Kutta method. Then the focusing and deflection characteristics of electron gun are studied. The good characteristics of the deflection system of electron gun can be obtained by optimizing the velocity and the location of emitting electron beam and by the aclinic emission of the electron beam

that can be achieved by making the end of the anode and the middle part of the cathode level. A new type of deflection system of electron gun is designed

and results with the new system show that non-uniform magneric field makes the beam of e-type eletron gun focus well

and the electronic beam diameter is less 3 mm when the emitting current is 50 to 100 mA.

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references

REBHOLZ C, MONCLUS M A, BAKER M A, et al. Hard and superhard TiAlBN coatings deposited by twin electron-beam evaporation [J]. Surf Coat Technol, 2007, 201(13): 6078-6082

HSU S W, YANG T S, CHEN T K, et al. Ion-assisted electron-beam evaporation of carbon-doped titanium oxide films as visible-light photocatalyst [J].Thin Solid Films, 2007, 515(7): 3521-3526.

WEI Ronghua, BOOKER T, RINCON C, et al. Metal plasma immersion ion implantation and deposition(MPIII and D)using a metal plasma electron evaporation source(MPEES)[J].Surf Coat Technol, 2005, 199(2): 579-583.

SUBRAHMANYAM A, BARIK U K. Synthesis of P-type transparent conducting silver: indium oxide(AIO)thin films by reactive electron beam evaporation technique [J].Journal of Physics and Chemistry of Solids, 2005, 66(5): 817-822.

赵玉清.电子束离子束技术[M].西安:西安交通大学出版社,2002.

孔庆生.四坩埚磁偏转电子束蒸发源[J]. 真空科学与技术, 1981, 1(2): 86-94.

KUNG Chingsheng. Evaporator with magnetic reflection electron beam using four crucibles[J]. Chinese Journal of Vacuum Science and Technology, 1981, 1(2): 86-94.

DENG Lifen, XIONG Yuansheng, XIAO Ping.Modelling and experimental study of impedance spectra of electron beam physical vapour deposition thermal barrier coatings [J]. Surf Coat Technol, 2007, 201(18): 7755-7763.

VAN VEENHUIZEN M J, MOODERA J. Electron deflector in UHV system: scattered electrons in e-beam evaporation [J/OL].Rev Sci Instrum, 2008, 79(3)[2008-10-11].http:∥link.aip.org/?RSINAK/791/033907/1.

IQBAL M, ALEEM F. Design and performance of high uniformity linear filament electron gun [J/OL].Rev Sci Instrum, 2006, 77(10)[2008-10-11].http:∥link.aip.org/?RSINAK/77/106101/1.

盛剑霓.工程电磁场数值分析[M]. 西安: 西安交通大学出版社,1991.

孙伯尧,汪健如.电子离子光学计算机辅助设计[M].北京:清华大学出版社,1991.

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