Department of Climate and Space Sciences and Engineering in the College of Engineering at the University of Michigan

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AOSS researchers earn patent for apparatus

Posted: August 12, 2013

A team led by Professor Thomas Zurbuchen has earned a patent for their work on a system for creating practical parametric excitation of quadrupole mass spectrometers (QMS) at auxiliary frequencies for enhanced resolution.

The U. S. patent, No. 8,487,249, abstract states: “The apparatus introduces a second adjustable resonant point in a QMS at a frequency that is close to a multiple of the fundamental frequency by adjusting driving point impedance characteristics of the QMS. The apparatus measures the first and second resonant point of the QMS to account for changes in the operational characteristics of the QMS.”

Adjunct Research Scientist Martin Rubin, Lead Engineer in Research Bruce Block and former student Daniel Gershman contributed to the invention.

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