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通过一台2 MeV直线感应型强流电子注入器建立的双脉冲功率源系统,实验研究了天鹅绒阴极产生的相对论性猝发双脉冲强流电子束基本特性,给出了双脉冲电子束的积分发射度、亮度和双脉冲电子束时间分辨包络变化情况。研究结果表明:天鹅绒阴极产生的双脉冲的亮度达到108A.(m.rad)-2;实验得到的两个脉冲电子束包络半径不完全一致,这是由于天鹅绒阴极在发射电子束过程中产生的阴极等离子体对真空二极管的影响程度不同所导致的。
A two-pulse power source system established by a 2 MeV linear induction high current electron injector was used to study the basic characteristics of the relativistic burst dual-pulse intense current electron beam generated by a velvet cathode. The integral emission of a double-pulsed electron beam Degree, Brightness and Time-resolved Envelope Change of Double Pulse Electron Beam. The results show that the brightness of the double pulse produced by the velvet cathode reaches 108 A (m.rad) -2; the envelope radius of the two pulsed electron beams obtained by the experiment is not exactly the same because the velvet cathode is generated during the electron beam emission Of the cathode plasma on the impact of different vacuum diodes caused.