A mechanism for poor high mass performance in fourier transform mass spectrometry

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 int...

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Bibliographic Details
Published in:Journal of the American Society for Mass Spectrometry 1992-05, Vol.3 (4), p.460-463
Main Authors: Holliman, C.L., Rempel, D.L., Gross, M.L.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Mass spectrometers and related techniques
Physics
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Summary: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.
ISSN:1044-0305
1879-1123
DOI:10.1016/1044-0305(92)87073-8