| 铁电介质阴极电子枪 |
| |
| 引用本文： | 刘国治.铁电介质阴极电子枪[J].强激光与粒子束,2001,13(4):508-512. |
| |
| 作者姓名： | 刘国治 |
| |
| 作者单位： | 西北核技术研究所，陕西，西安 710024 |
| |
| 基金项目： | 国家 8 63激光技术领域资助课题 |
| |
| 摘 要： | 给出并分析了铁电介质阴极电子枪的初步数值模拟和实验结果。实验表明其发射电子密度可达110A/cm2。该种电子枪产生的电流密度大于阴极发射电子初始能量为零时的空间电荷限制电流，PIC数值模拟结果表明可以通过给发射电子赋予一定的初始能量来解释这一现象，理论分析认为铁电介质阴极发射电子具有初始能量是合理的。
|
| 关 键 词： | 铁电介质阴极 电子枪 强流电子束 |
| 文章编号： | 1001-4322(2001)04-0508-05 |
| 收稿时间： | 2001/3/27 |
| 修稿时间： | 2001年3月27日 |
Electron gun with a ferroelectric material cathode |
| |
| LIU Guo,zhi.Electron gun with a ferroelectric material cathode[J].High Power Laser and Particle Beams,2001,13(4):508-512. |
| |
| Authors: | LIU Guo zhi |
| |
| Affiliation: | Northwest Institute of Nuclear Technology, P. O. BOX 69-1, Xi’an 710024, China |
| |
| Abstract: | The simulation and experimental r esults of electron gun with a ferroelectric material cathode by author in Cornel l university are presented in this paper. The results show that the current den sity is of order 110A/cm 2, experimentally. The current generated with the fer roelectric material cathode exceeds space charge limited current. It is consider ed that this is caused by the electric field enhancement adjacent to the cathode surface, due to the introduction of trigger pulse, FE effect, and grid structur e etc. Enhanced electric field will accelerate electrons to some energy in the d istrict near cathode surface. According to this, the electron gun with ferroelec tric material cathode can be reasonably simulated and designed by assigning inje cting electrons from cathode with an effective initial energy. |
| |
| Keywords: | ferroelectric material cathode electron gun intense electron beam |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《强激光与粒子束》浏览原始摘要信息 |
|
点击此处可从《强激光与粒子束》下载全文 |
