基于短磁透镜的展宽相机成像质量研究
Imaging quality of a pulse-dilation framing camera based on short magnetic lenses
摘要
Abstract
The pulse-dilation X-ray framing camera is an important two-dimensional ultrafast imaging diagnostic tool for laser nuclear fusion research.To improve the spatial resolution of the camera,a pulse-dilation framing camera employing short magnetic lenses for imaging is designed.The short magnetic lens group consists of different numbers of short magnetic lenses.A theoretical model of the framing camera is established using the Monte Carlo method,finite difference method and finite element method to investigate its spatial resolution characteristics.The results show that,as the number of short magnetic lenses increases,the curvature radius of the imaging surface of the framing camera increases.And the spatial resolution of the framing camera improves with the increasing number of short magnetic lenses.When five short magnetic lenses are employed,the spatial resolution of the framing camera is better than 15.0 lp/mm within a 42 mm diameter imaging area.An experimental platform for the pulse-dilation framing camera is constructed.With two short magnetic lenses used for imaging,the spatial resolution of the framing camera is better than 10.0 lp/mm within an 18 mm diameter imaging range.In addition,the spatial resolution of the framing camera improves with the increasing of cathode voltage.The experimental results are consistent with the theoretical predictions.Although employing multiple short magnetic lenses can further enhance imaging quality,it also increases system complexity.Therefore,in practical applications,the number of magnetic lenses should be selected according to specific performance requirements.关键词
等离子体物理学/惯性约束聚变/分幅相机/时间展宽/空间分辨率/短磁透镜/成像质量Key words
plasma physics/inertial confinement fusion/framing camera/pulse-dilation/spatial resolution/short magnetic lens/imaging quality分类
信息技术与安全科学引用本文复制引用
张志庭,罗秋燕,邓芷颖,蔡厚智,向利娟..基于短磁透镜的展宽相机成像质量研究[J].深圳大学学报（理工版）,2026,43(2):203-208,6.基金项目
National Natural Science Foundation of China(12575252,12575223) （12575252,12575223）
Foundation of National Key Laboratory of Plasma Physics(JCKYS2025212807) （JCKYS2025212807）
Basic and Applied Basic Research Foundation of Guangdong Province(2025A1515011820,2024A1515011832) （2025A1515011820,2024A1515011832）
Shenzhen Basic Research Foundation(JCYJ20240813141605008,JCYJ20240813141615021,JCYJ 20230808105019039) （JCYJ20240813141605008,JCYJ20240813141615021,JCYJ 20230808105019039）
Foundation of Shenzhen Key Laboratory of Photonics and Biophotonics(ZDSYS20210623092006020) 国家自然科学基金资助项目(12575252,12575223) （ZDSYS20210623092006020）
等离子体物理全国重点实验室基金资助项目(JCKYS2025212807) （JCKYS2025212807）
广东省基础与应用基础研究基金资助项目(2025A1515011820,2024A1515011832) （2025A1515011820,2024A1515011832）
深圳市基础研究计划资助项目(JCYJ20240813141605008,JCYJ20240813141615021,JCYJ20230808105019039) （JCYJ20240813141605008,JCYJ20240813141615021,JCYJ20230808105019039）
深圳市光子学和生物光子学重点实验室基金资助项目(ZDSYS20210623092006020) （ZDSYS20210623092006020）
