空间软X射线探测用遮光膜的研制及表征

项目名称： 空间软X射线探测用遮光膜的研制及表征

项目编号： No.11203025

项目类型： 青年科学基金项目

立项/批准年度： 2013

项目学科： 天文学、地球科学

项目作者： 陈田祥

作者单位： 中国科学院高能物理研究所

项目金额： 28万元

中文摘要： 空间探测用软X射线遮光膜的主要作用是透过软X射线，阻挡可见光，提高软X射线探测器的分辨率。本项目拟研制的空间探测用软X射线遮光膜是由亚微米级铝膜、聚酰亚胺膜以及支撑镍网构成的复合结构。其中聚酰亚胺膜是采用旋涂方法制备得到，采用磁控溅射的方法制备铝膜，利用UV-LIGA技术制备镍网。为了保障软X射线遮光膜在空间环境中的正常运行，拟进行一系列环境模拟实验：用自行设计加工的爆破压测试系统测试软X射线遮光膜的力学性能并反馈于其制作工艺；并用CCD探测系统测试软X射线的透过率；模拟探测器运行期间空间环境的辐照剂量，在地面进行辐照实验，并用化学和物理的方法分析辐照前后材料结构、力学性能以及透光率的变化。根据实验结果，选择不同的聚酰亚胺合成体系，制作满足不同空间探测要求的软X射线遮光膜。

中文关键词： 软X射线；遮光膜；聚酰亚胺膜；空间探测；微电铸

英文摘要： The function of optical blocking filter for soft X-ray space survey is to transmit soft X-ray, block visible light and improve the resolution of soft X-ray detector. The optical blocking filter used in soft X-ray space survey researched in this subject is made up of three layers: polyimide film,aluminum film and nickel mesh. Polyimide film is prepared by the method of spin coating. Aluminum layer with thickness at sub-micrometer magnitude is prepared by magnetron sputtering. And nickel mesh is manufactured by the UV-LIGA method. In order to ensure the filter work well in the space environment, many environment simulation experiments should be carried out: measuring the burst preasure of the filters which is used to characterize the mechanical properties of the optical blocking filters; measuring the transmission behaviors of the filters with the CCD detector system; calculating the total irradiation fluence of the space enviroment, and doing some simulating experiments on the ground. Finally, the structure, mechanical properties and optical properties of the filters will be analysed before and after the irradiation experiment using chemical and physical methods. After the characterizatoin experiments, the optimal polyimide synthesis system will be determined and blocking filters which could used in soft X-ray

英文关键词： Soft X-ray；filters；polyimide films；space detection；micro-electroforming