A Novel Quadrupole Mass Filter Based on Rectangular Electrodes

A low cost and simple geometry quadrupole mass filter was developed, in which rectangular electrodes were employed instead of traditional hyperboloid or cylindrical electrodes. Modeling and simulation were accomplished in COMSOL Multiphysics. The results showed that the performance of novel quadrupole mass filter turned out to be acceptable. For the low cost, simple geometry and easy to be assembled, it had a great prospect in the field of miniature, portable and low-level mass spectrometer.