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Since the Pioneer Venus Orbiter Neutral Mass Spectrometer (ONMS), more recent quadrupole mass spectrometer (QMS) instruments have implemented longer hyperbolic rods in order to expand mass range and maintain or improve mass resolution. The hyperbolic rods manufactured for the Mars Organic Molecule Analyzer (MOMA) linear ion trap, onboard the ExoMars rover, leverage the same mechanical design as heritage QMS systems. Image modified from Arevalo Jr. et al45
