Research on Multi-pulsed High Intense Electron Vacuum Diode

XIA Lian-Sheng; WANG Wen-Dou; MOU Fan; ZHANG Huang; CHEN De-Biao; ZHANG Kai-Zhi; SHI Jin-Shui; DENG Jian-Jun; ZHANG Lin-Wen

Chinese Physics C> 2007, Vol. 31> Issue(6) : 593-596

Research on Multi-pulsed High Intense Electron Vacuum Diode

Institute of Fluid Physics, CAEP, Mianyang 621900, China

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Abstract：
There are some differences between the single pulsed vacuum diode and the multi-pulsed vacuum diode. When vacuum diode is working under multi-pulsed mode, cathode plasma changes the designed condition inevitably. Formulas are presented in the paper to describe the vacuum while it is working under multi-pulsed mode. Simulation is used to describe cathode plasma explosion behavior. A column explosion mode is adopted in the paper while simulating cathode emitting. Experiments are also undertaken to study the characteristics of electron beams generated by a double pulsed intense electron diode with velvet cathode. When the diode pulsed voltages are 700kV, the beams' brightness is better than 1×10⁸A/(m.rad)² and the two beams' envelope changes little during beams' extraction process.

References

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. DAI G S et al. Proc 3rd International Symposium on PulsedPower and Plasma Applications. Sichuan: Editorial Oceof HPLPB. 2002, 2012. Baugaev S P, Cherepenin V A, Kanavets V I. IEEE Trans.Plasma Sci., 1990, 18: 5183. XIA L S et al. Acta Phys. Sin., 2004, 53: 3435(in Chinese)(夏连胜等.物理学报,2004, 53:3435)4. Humphries S, Jr. Charged Particle Beams. New York:JhonWiley Sons, 1990. 985. Brillouin L. Phys. Rev., 1945, 67: 2606. XIA L S et al. High Power Laser and Particle Beams. 2004,16: 251(in Chinese)(夏连胜等.强激光与粒子束,2004, 16:251)7. Saveliev Y M et al. Pulsed Power Conference (Texas:IEEE). 2003, 8338. XIA L S et al. High Power Laser and Particle Beams, 2004,16: 943(in Chinese)(夏连胜等.强激光与粒子束,2004, 16: 943)9. XIE Y T et al. High Power Laser and Particle Beams, 2002,14: 151(in Chinese)(谢宇彤等.强激光与粒子束,2002, 14:151)10. HUI Z X, YANG Z H. Free Electron Laser. Beijing: Na-tional Defense Industry Press, 1995. 68(in Chinese)(惠钟锡,杨震华.自山电子激光.北京:国防工业出版社,1995.68)11. CHEN J E. Introduction to Accelerator. Beijing: AtomicEnergy Press, 1993. 25(in Chinese)(陈佳洱.加速器物理基础.北京:原子能出版社,1993. 25)12. Nexsen W E, Scarpetti R D, Zentler J. Proc Particle Accelerator Conference(Chicago:IEEE),2001,3214

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XIA Lian-Sheng, WANG Wen-Dou, MOU Fan, ZHANG Huang, CHEN De-Biao, ZHANG Kai-Zhi, SHI Jin-Shui, DENG Jian-Jun and ZHANG Lin-Wen. Research on Multi-pulsed High Intense Electron Vacuum Diode[J]. Chinese Physics C, 2007, 31(6): 593-596.

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Received: 2006-10-24
Revised: 2006-12-08

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沈阳化工大学材料科学与工程学院沈阳 110142

Research on Multi-pulsed High Intense Electron Vacuum Diode

Corresponding author: XIA Lian-Sheng,

Institute of Fluid Physics, CAEP, Mianyang 621900, China

Received Date: 2006-10-24
Accepted Date: 2006-12-08
Available Online: 2007-06-05

Abstract: There are some differences between the single pulsed vacuum diode and the multi-pulsed vacuum diode. When vacuum diode is working under multi-pulsed mode, cathode plasma changes the designed condition inevitably. Formulas are presented in the paper to describe the vacuum while it is working under multi-pulsed mode. Simulation is used to describe cathode plasma explosion behavior. A column explosion mode is adopted in the paper while simulating cathode emitting. Experiments are also undertaken to study the characteristics of electron beams generated by a double pulsed intense electron diode with velvet cathode. When the diode pulsed voltages are 700kV, the beams' brightness is better than 1×10⁸A/(m.rad)² and the two beams' envelope changes little during beams' extraction process.