阴极形貌对表面传导电子源的影响

袁光军; 李春; 元光; 郭强

doi:10.3788/YJYXS20132804.0516

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阴极形貌对表面传导电子源的影响

材料物理和化学 | 更新时间：2020-08-12

- 阴极形貌对表面传导电子源的影响
- Influence of Cathode Shape on Surface-Conduction Electrons Emitter
- 液晶与显示 2013年28卷第4期页码：516-520
- 作者机构：
  
  中国海洋大学物理系,山东青岛,266100
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目(No.60907007/41076057)()
- DOI：10.3788/YJYXS20132804.0516
  中图分类号： O462.4
- 收稿日期：2013-02-26，
  
  修回日期：2013-03-26，
  
  纸质出版日期：2013-08-15
- 稿件说明：
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袁光军, 李春, 元光, 郭强. 阴极形貌对表面传导电子源的影响[J]. 液晶与显示, 2013,28(4): 516-520

YUAN Guang-jun, LI Chun, YUAN Guang, GUO Qiang. Influence of Cathode Shape on Surface-Conduction Electrons Emitter[J]. , 2013,28(4): 516-520
袁光军, 李春, 元光, 郭强. 阴极形貌对表面传导电子源的影响[J]. 液晶与显示, 2013,28(4): 516-520 DOI： 10.3788/YJYXS20132804.0516.

YUAN Guang-jun, LI Chun, YUAN Guang, GUO Qiang. Influence of Cathode Shape on Surface-Conduction Electrons Emitter[J]. , 2013,28(4): 516-520 DOI： 10.3788/YJYXS20132804.0516.

摘要

使用有限元方法分析表面传导电子源阴极的形貌对其阴极和栅极附近电场分布及在金属电极、真空与发射薄膜交界处电子发射轨迹的影响。对不同阴极形貌下电子发射轨迹模拟结果表明

并非所有在金属电极、真空与发射薄膜三者交界处的电子都可以到达阳极板

阳极电压、阴极高度和外形都会影响发射电子的轨迹从而影响阴极电子的发射效率

模拟发现降低电极高度、增大阳极电压、使用大半径的弧形电极可以提高电子发射效率。

Abstract

The influence of the cathode structure on the distribution of electric field near the cathode and grid

and the emission electron trajectories near the intersection of the cathode

film and vacuum is studied in surface-conduction electron emitter by the finite elements method. The results indicate that not all electrons emitted from the zone near the intersection can reach the anode through analyzing electron trajectories. The anode voltage

the cathode height and the cathode shape affect the position from which electrons emit and can reach the anode thereby affecting the efficiency of electron emission

simulation shows that reducing the electrode height

increasing anode voltage and applying arc electrode of large radius can increase electron emission.

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Keywords

references

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