物理学报2012，Vol.61Issue(7)：530-535,6.
金刚石薄膜中二次电子输运的蒙特卡罗模拟
A Monte Carlo simulation of secondary electron transport in diamond
李鹏 1许州 1黎明 1杨兴繁1
作者信息
- 1. 中国工程物理研究院应用电子学研究所,绵阳621900
- 折叠
摘要
Abstract
The diamond-amplifier photocathode（DAP） offers a new widely applicable way to generate high average-current,high brightness, and low thermal emittance electron beams.Physical processes with multiple parameters are important for the design of a reliable and efficient DAP.To perfom a study in-depth,a 2D Monte Carlo model in MATLAB frame is built to simulate the secondary electron transport in diamond.This simulation gives some proofs that the drift velocity is sensitive to diamond temperature and electric field applied,but not sensitive to the low impurity density（ 10~（17）/ cm~（-3））.As an appropriate result,the saturation velocity of secondary electron reaches 1.88×10~7 cm/s,and mobility without applied field is 3732 cm~2/Vs.In addition,some properties of a secondary electron bunch transported in diamond are discussed,which indicate that the effect of space charge under our considered electron cloud density is small.关键词
金刚石薄膜二次电子倍增光阴极/蒙特卡罗方法/二次电子输运Key words
diamond-amplifier photocathode/Monte Carlo method/secondary electron transport分类
数理科学引用本文复制引用
李鹏,许州,黎明,杨兴繁..金刚石薄膜中二次电子输运的蒙特卡罗模拟[J].物理学报,2012,61(7):530-535,6.
