激光等离子体诊断用串列式十六通道X射线KB系统研究

项目名称： 激光等离子体诊断用串列式十六通道X射线KB系统研究

项目编号： No.11305116

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 伊圣振

作者单位： 同济大学

项目金额： 29万元

中文摘要： 多通道Kirkpatrick-Baez（KB）显微镜是激光惯性约束聚变(ICF)研究进行高质量X射线时空诊断的重要成像设备。LMJ和OMEGA等强激光ICF装置在研的八通道及十六通道KB系统为并列式光路结构，存在着元件加工精度要求高、物镜装配难度大和所需背光源路数多等制约其实际应用的瓶颈问题。基于我国激光ICF装置开展高质量X射线时空诊断的迫切需求和并列式多通道KB系统存在的上述问题，本项目提出了一种各物镜元件沿光轴依次顺序排列的多通道KB结构。这种串列式多通道KB系统的光路结构易于实现，降低了对背光源尺寸的要求，同时可以准确调控像点间距。本项目将开展基于串列式光路结构的十六通道KB系统总体方案研究，并重点解决其光学设计和精密物镜装配等基础性技术问题。本项目的研究成果对于丰富激光ICF诊断方法，提高我国激光ICF诊断研究的精密化水平具有重要意义。

中文关键词： 等离子体诊断；KB显微镜；X射线成像；X射线多层膜；多通道

英文摘要： The multi-channel Kirkpatrick-Baez (KB) microscope is the precise x-ray imaging instrument used for time-resolved diagnostics in laser inertial confinement fusion (ICF) research. The present eight-channel and sixteen-channel KB microscopes with parallel optical structure in LMJ and OMEGA laser facility require the high accuracy on optical components and system assembly, and many laser beams, which limits their practical application in ICF experiments . Based on the urgent demand for developing high-quality x-ray imaging diagnostics in domestic laser facility and the above problems of parallel multi-channel KB microscope, the project proposes the novel multi-channel KB microscope with its mirrors successively arranged along with optical axis. This tandem optical structure is easy to implement and reduces the required backlighter size, meanwhile the image spacing can be accurately controlled. The project is planned to carry out the research on the overall scheme of sixteen-channel KB microscope with tandem optical structure, and focuses on the basic technical issues in optical design and precise system assembly. The research is of great significance for enriching laser ICF diagnostic methods and promoting the precision level of laser ICF diagnostics in China.

英文关键词： Plamsa Diagnostics；Kirkpatrick-Baez Microscope；X-ray Imaging；X-ray Multilayers；Multi-channel