Fragmentation of ions in Kingdon ion traps

Details Fragmentation of ions in Kingdon ion traps Fragmentation of ions in Kingdon ion traps

2011-08-02

2011-08-02

Berman, Jack I (Department: 2881)

Radiant energy

Ionic separation or analysis

Methods

C250S292000

Reexamination Certificate

active

07989758

ABSTRACT:
Fragment ion spectra are acquired in Kingdon ion traps that have a potential well for harmonic oscillations of the ions in the longitudinal direction and in which the ions can oscillate radially in a plane between two or more inner electrodes. Metastable ions, preferably produced by laser desorption, are introduced into the Kingdon ion trap close to the minimum of the longitudinal potential well and stored there locally for a predetermined time period. Excess internal energy in the metastable ions causes most of the ions to decompose ergodically to fragment ions. Then the fragment ions and any remaining analyte ions are excited to execute harmonic oscillations in the longitudinal potential well. The harmonic oscillations are measured as image currents, from which a high-resolution mass spectrum of the fragment ions can be calculated.

REFERENCES:
patent: 5886346 (1999-03-01), Makarov
patent: 2005/0121609 (2005-06-01), Makarov et al.
patent: 2007/0023629 (2007-02-01), Makarov
patent: 2 448 413 (2008-10-01), None
patent: WO 2008/063497 (2008-05-01), None
patent: WO 2009/001909 (2008-12-01), None
Hu et al., Resonant AC Dipolar Excitation for Ion Motion Control in the Orbitrap Mass Analyzer, Aug. 10, 2005, Published 2006, Journal of Physical Chemistry A, vol. 110, No. 8, p. 2682-2689.
Makarov, Electrostatic Axially Harmonic Orbital Trapping: A High-Performance Technique of Mass Analysis, Mar. 15, 2000, Analytical Chemistry, vol. 72, No. 6, p. 1156-1162.

Affiliated with

Also associated with

Rating

Fragmentation of ions in Kingdon ion traps does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Fragmentation of ions in Kingdon ion traps, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fragmentation of ions in Kingdon ion traps will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2779607