地面模拟设备中原子氧通量测量方法的比较研究

 原子氧是低地球轨道中对航天器影响最为严重的环境因素之一。原子氧通量的测量，是原子氧效应研究工作的基础，是量化航天器材料和部件的原子氧暴露程度、评估其空间原子氧使用寿命的重要参数。介绍了地面模拟设备中常用的几种原子氧通量测量方法的测量原理，包括Kapton质量损失法、NO₂滴定法、银表面催化法、光谱法、质谱分析法、银膜和半导体膜电阻法等等，对各种测量方法的特点进行了概括。另外，选择了Kapton质量损失法、银表面催化法和光谱法测量了原子氧效应模拟设备中的原子氧通量，并对测量结果进行了对比，分析了这几种方法的准确性。

Comparative Study of Measurement Methods of Atomic Oxygen Flux in Ground-based Simulation Facility

Atomic oxygen is the predominant component and one of the most severe environment factors.In low earth orbit(LEO),it may cause severe erosion of spacecraft materials.The measurement of atomic oxygen flux is the foundation in the study of atomic oxygen effects,an important parameter for quantifying the exposure level of atomic oxygen and evaluating the atomic oxygenduration lifetime of spacecraft components and materials in LEO.The principles and working processes of the commonly used measurement methods in ground-based simulation facilities were introduced,including Kapton-mass loss method,NO_2 titration method,Ag surface catalysis method,emission spectrum method,Ag-resistance method and the semiconductor sensor method.The characteristics and utilities of the methods were summarized.In addition,the atomic oxygen flux of a ground-based simulation facility was measured using Kapton-mass loss method,Ag surface catalysis method and emission spectrum method.Based on the comparison of the measurement results,the accuracy of each method was analyzed.