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Study on the Properties of Photoemission Electron Beam Produced by a Pulsed Photoemission Electron Gun
Hua Xiaoqing,Zhang Linhu,Bai Jiling,Guo Wensheng
Author NameAffiliation
Hua Xiaoqing State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Science,Dalian 116023 
Zhang Linhu State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Science,Dalian 116023 
Bai Jiling State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Science,Dalian 116023 
Guo Wensheng State Key Laboratory of Molecular Reaction Dynamics,Dalian Institute of Chemical Physics,Chinese Academy of Science,Dalian 116023 
Abstract:
By using the new designed pulse photoemission gun,the energy distribution of photoemision electron beam,the relationship between the number of photoemission electrons and the intensity of laser and the duration of photoemission electrons in ionization region were studied.Most of electrons have the excess energy which laser induce photoemission electrons leave,but the energy distribution of electrons is widened by the space charge effect of electrons.For on pulse,photoemission electron density with about 109~1010/cm3 in the ionization region was found.
Key words:  Photoemission electrons,Density of electrons,Space charge effect
FundProject:
脉冲光电子枪中光电子束性能研究
花晓清,张林虎,白吉玲,郭文生
摘要:
利用新设计的脉冲光电子枪,研究了光电子束的能量分布,光电子数密度与激光强度的关系和光电子在电离区内的滞留时间。大部分电子的能量为光发射电子的剩余能量,但是由于电子的空间电荷效应,电子能量分布具有加宽现象·每个激光脉冲发射到电离区内的光电子数密度在109/cm3以上。
关键词:  光电子发射  光电子数密度  空间电荷效应
DOI:10.1088/1674-0068/13/3/263-269
分类号: