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Published on: June 19, 2010
Small mass spectrometer with extended measurement capabilities at high pressures
1Physikalisches Institut der Universität Bonn, Bonn, Germany.
The Review of Scientific Instruments
|November 1, 1978
Summary
A new Mattauch-Herzog mass spectrometer enables in situ planetary atmosphere analysis up to 10(-2) millibars. This instrument utilizes differential pumping and doubly ionized/dissociated ions for enhanced high-pressure performance.
Area of Science:
- Planetary Science
- Analytical Chemistry
- Space Instrumentation
Background:
- In situ analysis of planetary atmospheres requires robust instrumentation capable of operating under challenging pressure conditions.
- Traditional mass spectrometers face limitations in high-pressure environments, hindering atmospheric composition studies.
Purpose of the Study:
- To develop and characterize a novel Mattauch-Herzog mass spectrometer for in situ planetary atmosphere investigation.
- To enhance the high-pressure performance of mass spectrometry for space exploration applications.
Main Methods:
- Development of a compact Mattauch-Herzog mass spectrometer.
- Implementation of differential pumping between the ion source and analyzing fields.
- Utilization of doubly ionized and dissociated ions for mass analysis.
- Shortening path-length and increasing extraction field in the ion source.
Main Results:
- The developed mass spectrometer achieves operation at pressures up to 10(-2) millibars.
- Laboratory tests demonstrate improved linearity, dynamic range, and mass resolution.
- Specific performance characteristics are detailed for carbon dioxide (CO2) analysis.
Conclusions:
- The enhanced Mattauch-Herzog mass spectrometer is suitable for in situ analysis of planetary atmospheres.
- The design modifications significantly improve high-pressure operational capabilities.
- This instrument advances the potential for detailed atmospheric studies on other planets.
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