高亮度虚火花电子束发射度的测量  

Emittance Measurement of a High Brightness Pseudospark Produced Electron Beam

作　　者：黄羽[1] 王明常[1] 张立芬[1] 陆宾 冯诚士 周慧芬[1] 

机构地区：[1]中国科学院上海光学精密机械研究所

出　　处：《光学学报》1996年第10期1493-1496,共4页Acta Optica Sinica

基　　金：国家自然科学基金

摘　　要：介绍了对一台脉冲线加速器驱动虚火花放电装置产生的电子束发射度的测量工作。在十隙虚火花放电室中充以１５Ｐａ的氮气，产生能量为约２００ｋｅＶ、束流２０００Ａ、直径为１ｍｍ的高亮度电子束。在距阳极５ｃｍ处测得电子束的均方根发射度εｒｍｓ≈４８ｍｍ·ｍｒａｄ，规一化发射度εｎ≈４７ｍｍ·ｍｒａｄ。We report the emittance measurement of a electron beam produced in a pseudospark discharge device driven by a pulse line accelerator. A ten gap pseudospark device was operated at 200 kV, with anitrogen gas fill presure of 15 Pa. Small diameter (～1 mm) electron beam with current about 2 kA has been generated. The rms emittance of the beam is measured to be ε rms ≈ 48 mm·mrad about 5 cm downstream of the anode plane. The normalized emittance is then found to be ε n≈ 47 mm·mrad.

关 键 词：虚火花放电 发射度 自由电子激光器 电子束 

分 类 号：TN248.6[电子电信—物理电子学]