Design and preliminary experiment of radial sheet beam terahertz source based on radial pseudospark discharge  

作　　者：Dian ZHANG Jun ZHANG Song LI Jing LIU Huihuang ZHONG 张点;张军;李嵩;刘静;钟辉煌(College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410072,People's Republic of China)

机构地区：[1]College of Advanced Interdisciplinary Studies,National University of Defense Technology,Changsha 410072,People's Republic of China

出　　处：《Plasma Science and Technology》2019年第4期22-26,共5页等离子体科学和技术（英文版）

摘　　要：To satisfy the demands for compact,inexpensive terahertz(THz)sources with power of hundreds of watts,a radial sheet beam THz source which does not require an external magnetic field and is driven by a radial pseudospark discharge plasma electron gun(PSDP-EGUN)is proposed.Radial design has been used in pseudospark switches,but in this paper the design of a PSDP-EGUN to drive a radial THz source is presented for the first time.Being different from the latest reported axial quasi-rectangular sheet beam THz sources driven by an axial PSDP-EGUN,a new desig n consisti ng of a circular plate-shaped sheet beam that is directly gen erated by the radial PSDP-EGUN is reported.As compared to an axial system,the radial configuration may result in a larger beam current and a larger beam-wave interaction area together with a higher potential of THz output power.Theoretical analysis and pailicle-in-cell simulation have been employed in the design of the radial sheet beam THz source.Output powers in the kilowatt range have been observed in the simulation of this 0.22 THz source.Preliminary experimental results of the radial PSDP-EGUN are also presented.

关 键 词：SHEET BEAM TERAHERTZ source PSEUDOSPARK DISCHARGE 

分 类 号：TL[核科学技术]