Multi-pulsed intense electron beam emission from velvet,carbon fibers,carbon nano-tubes and dispenser cathodes  

作　　者：夏连胜 杨安民 谌怡 张篁 刘星光 李劲 江孝国 张开志 石金水 邓建军 章林文 

机构地区：[1]Institute of Fluid Physics,CAEP

出　　处：《Chinese Physics C》2010年第11期1733-1737,共5页中国物理C（英文版）

基　　金：Supported by National Nature Science Foundation of China(10575090);State Key Laboratory of Advanced Materials (Beijing University of Science and Technology, 20082D-10)

摘　　要：The experimental results of studies of four kinds of cathode emitting intense electron beams are demonstrated under multi-pulsed mode based on an experimental setup including two multi-pulse high voltage sources.The tested cathodes include velvet,carbon fibers,carbon nano-tubes （CNTs） and dispenser cathodes.The results indicate that all four are able to emit multi-pulsed beams.For velvet,carbon fiber and CNTs,the electron induced cathode plasma emission may be the main process and this means that there are differences in beam parameters from pulse to pulse.For dispenser cathodes tested in the experiment,although there is a little difference from pulse to pulse for some reason,thermal-electric field emission may be the main process.The experimental results of studies of four kinds of cathode emitting intense electron beams are demonstrated under multi-pulsed mode based on an experimental setup including two multi-pulse high voltage sources.The tested cathodes include velvet,carbon fibers,carbon nano-tubes （CNTs） and dispenser cathodes.The results indicate that all four are able to emit multi-pulsed beams.For velvet,carbon fiber and CNTs,the electron induced cathode plasma emission may be the main process and this means that there are differences in beam parameters from pulse to pulse.For dispenser cathodes tested in the experiment,although there is a little difference from pulse to pulse for some reason,thermal-electric field emission may be the main process.

关 键 词：multi-pulsed intense emission cathode plasma dispenser cathode 

分 类 号：O462.1[理学—电子物理学]