A Mechanism for Poor High Mass Performance in Fourier Transform Mass Spectrometry
- 1 May 1992
- journal article
- Published by American Chemical Society (ACS) in Journal of the American Society for Mass Spectrometry
- Vol. 3 (4) , 460-463
- https://doi.org/10.1016/1044-0305(92)87073-8
Abstract
The discovery of a mass-dependent electrical mechanism for signal loss of high mass ions in Fourier transform mass spectrometry is reported. Theoretical calculations and experimental evidence show the existence of resonances involving the z-motion and radial motion of the ion. The resonances are intrinsic in the cubic trap. This results in energy transfer between modes, expansion of the ion cloud, and a corresponding loss of signal. Quadrupolar trapping potential wells are proposed as a solution.Keywords
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