Abstract
A new alternative to quadrupolar axialization for ions trapped within a cubic Fourier transform mass spectrometer cell is presented. This method, low-voltage on-resonance excitation, requires no electronic switching hardware, as is necessary for the quadrupolar axialization technique. However, it yields equivalent ion selection performance, both for single- and broad-band ion selection, as is demonstrated with spectra for a number of poly(ethylene glycol) samples, gramicidin S, and a bovine insulin b-chain sample.
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