High resolution excitation/isolation of ions in a low...

Details High resolution excitation/isolation of ions in a low... High resolution excitation/isolation of ions in a low...

2008-09-29

2011-10-04

Kim, Robert (Department: 2881)

Radiant energy

Ionic separation or analysis

Cyclically varying ion selecting field means

C250S292000, C250S288000

Reexamination Certificate

active

08030612

ABSTRACT:
Methods for improved separation of ions from an ion trap employing a combination of low pressure and low amplitude ion excitation, including methods for removing, from an ion trap ion population, ions having a m/z value neighboring that of an ion of interest, mass spectrometry methods providing improved resolution of ion detection, and programmable apparatus programmed with instructions therefor.

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Collings, B.A. et al.; “Resonant excitation in a low pressure linear ion trap”, J. Am. Soc. Mass Spectrom, vol. 14, pp. 622-634, Fig. 1 (May 2, 2003).
Collings, B.A.; “Increased fragmentation efficiency of ions in a low pressure linear ion trap with an added de octopole field”, J. Am Soc. Mass Spectrom, vol. 16, pp. 1342-1352, Fig. 1 (Jun. 24, 2005).

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