项目名称: 空间等离子体静电分析器太阳紫外光污染的“疏导式”抑制方法与实验研究
项目编号: No.41274190
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 天文学、地球科学
项目作者: 曾立
作者单位: 北京航空航天大学
项目金额: 90万元
中文摘要: 太阳紫外光污染是空间等离子体探测活动中一直广为关注的重要问题之一,它对探测数据的质量和可信度具有重要影响。本项目面向经典的空间等离子体探测用半球型静电分析器,基于UV透明(高UV透射率)的导电箔片电极窗口的新方法和新技术,科学地引导两类性质截然不同的粒子(带电粒子和不带电的光子)在静电分析器通道内的传播。对入射的UV光,采取"疏导"的策略,使其从透明电极窗口能径直逃离静电分析器通道。在此基础上,使"疏导式"UV抑制新方法与常规的"吸收式"方法协同,进行静电分析器方案优化设计和研制无UV污染(极高UV抑制比)的半球型静电分析器原理样机,提炼总结形成无UV污染的空间等离子体静电分析器设计的原理与方法。
中文关键词: 静电分析器;紫外光污染抑制;透明电极;;
英文摘要: Solar UV pollution has been a widespread concern for space plasma measurements,and has important influence on quanlity and credibility of the scientific data. Aimed at the typical hemispherical electrostatic anlyzer for space plasma, and based on the novel method and new technology using conductive foil electrode windows with UV transparent (high UV transmission), two very different types of particles, charged particles and uncharged photons, can propagate by scientific guidance within the passage of the electrostatic anlyzer from this project.Due to the dredging method,incident UV light can escape directly from the electrode windows of the electrostatic anlyzer. Further more, the novel method is synergic with the routine absorping method to come to an optimization design. Then a new prototype with no UV pollution (extremely high ratio) is develped, and a new principle and method for designing an electrostatic analyzer with no UV pollution for space plasma is formed and proposed.
英文关键词: Electrostatic analyzer;UV suppression;Transparent film electrode;;