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

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.

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。

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）的导电薄膜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。本项目对新型的静电分析器进行多物理场仿真计算和方案优化设计，建立无UV污染（极高UV抑制比）的半球型静电分析器原理验证系统，进行了UV光和带电粒子模拟实验。结果表明，新型的静电分析器具有极高的UV抑制比（2.1×1013）。项目总结形成无UV污染的空间等离子体静电分析器设计的原理与方法。项目的研究工作为未来深空等离子体无UV污染探测奠定了技术基础。