空间用小型飞行时间质谱计研制及性能评价

Development and Performance Evaluation of Miniature Time-of-Flight Mass Spectrometer for Space Exploration

摘要: 质谱计是一种能够精细分析物质成分的科学仪器，在航天活动中起着越来越重要的作用。为了满足空间探测的需求，研制了小型飞行时间质谱计，并对其性能进行了评价。研制的飞行时间质谱计由电子轰击源、垂直引入反射式飞行时间质量分析器和电子学部分组成，体积为300 mm×200 mm×200 mm，质量为13.4 kg，功耗为25 W，分辨率优于359 FWHM，质量数范围为1～502 amu，对C₄H₁₀的检测限为1.3×10^-5（质量分数）。

Abstract: The mass spectrometer,which is a scientific instrument capable of finely analyzing the composition of materials,plays an increasingly important role in space activities.To meet the needs of space exploration,a miniature time-offlight mass spectrometer(TOF MS)has been developed and its performance has been evaluated.The designed TOF MS consists of the electron impact ionization ion source,the miniature reflection time of flight mass analyzer with orthogonal extraction and electronics.The volume is 300 mm×200 mm×200 mm,mass is 13.4 kg,power consumption is 25 W,the mass resolution is better than 359 FWHM,and the mass range is 1 to 502 amu,the limit of detection is 1.3×10^-5mass fraction for C₄H₁₀.