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This article reviews the recent development and application of four types of space miniature mass spectrometers including magnetic sector mass spectrometer, quadrupole mass spectrometer, ion trap mass spectrometer and time-of-flight mass spectrometer. The advantages and the disadvantages of such mass spectrometers are briefly discussed. Finally, the expectations for improved properties and development...
The leak rate of spacecraft port must meet certain standards during the opening and closing processes. The port quick leak detector can be used to on-line measure leak rates of spacecraft port. In this work, a new calibration apparatus is designed and investigated. It can work at different temperatures with different gases in a wide leak rate range. This apparatus consists of the standard leak rate...
A miniaturized magnetic sector mass spectrometer has been developed and tested. The instrument was designed the number two filament in ion source, in order to avoid failure of the number one filament. It has a 90° magnetic sector-field analyzer with double trajectory, which has a magnetic flux density of 0.65 T. Two special trajectories are selected to cover the mass ranges, 1–12 amu and 6–50 amu...
A miniature magnetic sector mass spectrometer capable of separating into the mass range from 1 to 50 amu has been designed and developed. It mainly consists of analyzer unit and electronic unit. The instrument dimension is 25 cm long, 25 cm wide and 16 cm high. It weighs 2.5 kg, and the power consumption was measured to be 5W. All these characteristics make this miniature mass spectrometer suitable...
The main factor to affect lower limit of static expansion vacuum standard is outgassing of the inner surface. A new method has been demonstrated to extend the lower limit by using a non-evaporable getter pump (NEGP) to eliminate the outgassing influence. Because NEGP has no pumping speed for inert gases, it can maintain the ultra-high vacuum background without changing gas quantity in the calibration...
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