Brubaker lens
From Mass Spec Terms
| IUPAC RECOMMENDATIONS 2013 |
| Brubaker lens |
|---|
| 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. |
| Related Term(s): |
| Reference(s):
D. J. Douglas. Mass Spectrom. Rev. 28, 937 (2009). (http://dx.doi.org/10.1002/mas.20249 ) |
| From Definitions of Terms Relating to Mass Spectrometry (IUPAC Recommendations 2013); DOI: 10.1351/PAC-REC-06-04-06 © IUPAC 2013. |
