多脉冲强流真空电子二极管研究  

Research on Multi-pulsed High Intense Electron Vacuum Diode

作　　者：夏连胜[1] 王文斗[1] 牟凡[1] 张篁[1] 陈德彪[1] 张开志[1] 石金水[1] 邓建军[1] 章林文[1] 

机构地区：[1]中国工程物理研究院流体物理研究所,绵阳621900

出　　处：《高能物理与核物理》2007年第6期593-596,共4页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金(10575090);中国工程物理研究院基金(20050209)资助~~

摘　　要：研究了猝发脉冲串条件下真空强流电子二极管状态和输出电子束参数的变化规律,建立了阴极等离子体膨胀效应的强流电子二极管参量的方程组,并提出了阴极等离子体柱状膨胀模型．实验研究了猝发多脉冲电子二极管输出多脉冲强流电子束的能力和束品质的变化,给出了以天鹅绒为阴极发射体,阴极等离子体膨胀速度小于1cm/μs时二极管输出的双脉冲电子束包络的变化和电子束的发射度及亮度．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× 10^8A/（m·rad）^2 and the two beams＇ envelope changes little during beams＇ extraction process.

关 键 词：猝发多脉冲二极管 膨胀模型 束包络 亮度 

分 类 号：TL503[核科学技术—核技术及应用]