强激光与粒子束2026，Vol.38Issue(6)：75-83,9.DOI:10.11884/HPLPB202638.250385
电子束时间展宽技术及其应用
Electron pulse time-dilation technology and its applications
摘要
Abstract
[Background]Inertial confinement fusion(ICF)diagnostics demand ultra-high temporal resolution to accurately capture critical physical processes.However,the performance of conventional diagnostic devices is often limited by their inherent time-resolution capabilities.[Purpose]This study aims to improve the temporal resolution of ICF diagnostic systems by investigating electron pulse time-dilation technology and its practical applications in X-ray detection.[Methods]We developed a time-dilation X-ray framing camera and a time-dilation X-ray diode system.The technology manipulates the velocity dispersion of photoelectrons to stretch(or magnify)the time width of input optical signals,allowing conventional devices to sample ultra-fast events with enhanced precision.Both short and long magnetic lens imaging techniques were employed to optimize spatial resolution.[Results]The time-dilation technology significantly improves system performance.For the framing camera,temporal resolution was improved from 80 ps to 5 ps.Using short magnetic lenses,the camera achieved a spatial resolution better than 10 lp/mm over a 53 mm diameter;this was further enhanced to 20 lp/mm using long magnetic lenses.For the X-ray diode system,temporal resolution was improved from 261 ps to 19 ps.[Conclusions]Electron pulse time-dilation technology is a highly effective method for enhancing the temporal resolution of ICF diagnostic instruments,providing robust support for the accurate diagnosis of rapid physical phenomena in fusion experiments.关键词
激光聚变/超快诊断/分幅相机/X射线二极管/电子束时间展宽Key words
laser fusion/ultrafast diagnosis/framing camera/X-ray diode/electron pulse time-dilation分类
能源科技引用本文复制引用
蔡厚智,杜卓铭,罗秋燕,陈轩,欧思凯,刘进元,向利娟..电子束时间展宽技术及其应用[J].强激光与粒子束,2026,38(6):75-83,9.基金项目
国家自然科学基金项目(12575223、12575252) （12575223、12575252）
等离子体物理国家重点实验室基金项目(JCKYS2025212807) （JCKYS2025212807）
广东省基础与应用基础研究基金项目(2026A1515011608、2025A1515011820、2024A1515011832) （2026A1515011608、2025A1515011820、2024A1515011832）
深圳市光子学与生物光子学重点实验室基金项目(ZDSYS20210623092006020) （ZDSYS20210623092006020）
深圳市科技计划项目(JCYJ20240813141605008、JCYJ20240813141615021、JCYJ20230808105019039) （JCYJ20240813141605008、JCYJ20240813141615021、JCYJ20230808105019039）
深圳大学2035追求卓越研究计划项目(2023C007) （2023C007）
深圳大学青年学者科学基金项目(806-0000340618) （806-0000340618）
