光学精密工程2018，Vol.26Issue(2)：261-267,7.DOI:10.3788/OPE.20182602.0261
空间电荷效应对时间展宽分幅变像管时空性能的影响
Influence of space charge effect on temporal-spatial performance of pulse-dilation framing tube
摘要
Abstract
X-Ray framing cameras are an important two-dimensional ultrafast diagnostic tool in inertial confined fusion experiments.Although the temporal performance of framing cameras is further im-proved by the long drift area,the space charge effect(SCE)is increased as well.In order to study the influence of SCE on the framing tube,similar to the magnetic focused framing tube,for example,the temporal dispersion and spatial dispersion of SCE are studied using the mean field model,electron trajectory,and imaging distribution,and the influence of SCE on the framing tube is analyzed.The results of study and analysis show that the temporal dispersion is related to the cathode bias,dilated pulse,and drift distance,and the spatial dispersion is related to the imaging system and electron den-sity.When the temporal resolution is improved to ~2 ps,further increase of temporal resolution is restricted by the temporal dispersion,w hich is a major factor and close to physical temporal;the spa-tial resolution is decreased to ~8 %.A theoretical reference for the sub-picosecond framing tube is provided by studies on SCE and methods of its reduction.关键词
光电子学与激光技术/空间电荷效应/平均场模型/时间展宽分幅变像管/时间分辨性能/空间分辨性能Key words
optoelectronics and laser technology/space charge effect/mean field model/pulse-dilation framing tube/temporal resolution/spatial resolution分类
信息技术与安全科学引用本文复制引用
白雁力,姚荣彬,高海英,党选举,何国民..空间电荷效应对时间展宽分幅变像管时空性能的影响[J].光学精密工程,2018,26(2):261-267,7.基金项目
国家自然科学基金资助项目(No.61263013) （No.61263013）
广西自然科学基金重点项目(No.2016GXNSFDA380001) （No.2016GXNSFDA380001）
广西高校中青年教师基础能力提升项目(No.2017KY0199) （No.2017KY0199）
广西教育厅高校科学技术研究项目(No.YB2014131) （No.YB2014131）
