Spatial harmonics of the field in a quadrupole mass filter with circular electrodes

Pleiades Publishing Ltd - Tập 44 - Trang 1215-1219 - 1999
D. J. Douglas1, T. A. Glebova2, N. V. Konenkov2, M. Yu. Sudakov2
1University of British Columbia, Vancouver, Canada
2S. A. Esenin Ryazan State Pedagogical University, Ryazan, Russia

Tóm tắt

The amplitudes of the spatial harmonics of the field are calculated for given displacements of the electrodes in a quadrupole mass filter relative to their optimum positions. The cases of radial and angular displacements of the electrodes, asymmetries in voltage supplied to the electrodes, and nonidentical rod diameters are considered. These data are required for calculating the actual shape of the mass peaks and will be useful in designing mass filters.

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