New Operational Mode of Space-borne Quadrupole Mass Spectrometers

Details New Operational Mode of Space-borne Quadrupole Mass Spectrometers New Operational Mode of Space-borne Quadrupole Mass Spectrometers

Dec 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010agufm.p31b1537g&link_type=abstract

American Geophysical Union, Fall Meeting 2010, abstract #P31B-1537

Computer Science

Performance

[6297] Planetary Sciences: Solar System Objects / Instruments And Techniques

Scientific paper

Quadrupole mass spectrometers are the most widely used type of mass spectrometer for the analysis of neutrals from planetary sources. We provide a new implementation of a novel operating mode such quadrupole mass spectrometers (QMS) which substantially increases the mass resolution of these high-heritage sensors. This mode has direct applications for future planetary science and cometary missions. This new operational mode is achieved through amplitude modulation of the QMS RF waveform. This modulation leads to improved performance of existing sensors, enabling measurements over a significantly larger mass range. We implement this modulation mode as single sideband (SSB) modulation of the fundamental RF waveform, driving a multiple resonant tank circuit. An FPGA based power control system has been developed which provides flexibility in the selection of an operating point. This control system is interfaced with an existing quadrupole mass spectrometer with circular rod cross section to experimentally demonstrate the advantages of implementing a SSB modulation based solution.

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