About: Brubaker lens   Goto Sponge  NotDistinct  Permalink

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  • Brubaker lens
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  • K. K. Murray, R. K. Boyd, M. N. Eberlin, G. J. Langley, L. Li and Y. Naito, Pure Appl. Chem., 2013, 85, 1515-1609
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  • Additional set of four short, cylindrical electrodes, mounted co-linearly with a transmission quadrupole mass spectrometer that is excited with some fraction of the AC potential but not the DC potential applied to the main quadrupole. The Brubaker lens thus acts as a high-pass filter for ion m/z, but the resulting delay in application of the DC potential component also results in a reduction in defocusing by fringe fields and thus significantly improves overall ion transmission efficiency at a given mass resolution. [IUPAC]
  • Additional set of four short, cylindrical electrodes, mounted co-linearly with a transmission quadrupole mass spectrometer that is excited with some fraction of the AC potential but not the DC potential applied to the main quadrupole. The Brubaker lens thus acts as a high-pass filter for ion m/z, but the resulting delay in application of the DC potential component also results in a reduction in defocusing by fringe fields and thus significantly improves overall ion transmission efficiency at a given mass resolution. [IUPAC MS REC]
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  • Brubaker pre-filter
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