Radiant energy – Ionic separation or analysis – Methods
Reexamination Certificate
2007-06-05
2007-06-05
Lee, John R. (Department: 2881)
Radiant energy
Ionic separation or analysis
Methods
C250S282000, C250S288000, C250S290000
Reexamination Certificate
active
11133325
ABSTRACT:
A mass spectrometer and a method of operating same is provided. The mass spectrometer has an elongated rod set. The rod set has an entrance end and an exit end. An RF drive voltage is applied to the rod set to radially confine a first group of ions and a second group of ions of opposite polarity in the rod set. An entrance auxiliary RF voltage is applied to the entrance end and an exit auxiliary RF voltage to the exit end relative to the RF drive voltage, to trap both the first group of ions and the second group of ions in the rod set.
REFERENCES:
patent: 5576540 (1996-11-01), Jolleffe
patent: 6093929 (2000-07-01), Javahery et al.
patent: 6177668 (2001-01-01), Hager
patent: 6504148 (2003-01-01), Hager
patent: 6703607 (2004-03-01), Stott et al.
patent: 7049580 (2006-05-01), Londry et al.
patent: 2004/0238734 (2004-12-01), Hager et al.
patent: 2005/0263695 (2005-12-01), Syka
Dawson, P.H., “Quadrupole Mass Spectrometry and its Applications” AIP Press, Woodbury, New York, 1995 (210-216).
B.A. Collings, M. Sudakov and F.A. Londry, “Resonance Shifts in the Excitation of the n=0, K=1 to 6 Quadropole resonances for Ions Confined in a Linear Ion Trap,” J. Am Soc Mass Spectrom 2002, 13, 577-586).
F.A. Londry and James W. Hager, “Mass Selective Axial Ion Ejection from a Linear Quadrupole Ion Trap”, 2003 American Society for Mass Spectrometry, Published by Elsevier Inc. 1044-0305/03.
Syka, J. E. P. et al., “Peptide and Protein Sequence Analysis by Electron Transfer Dissociation Mass Spectrometry”, The National Academy of Sciences of the U.S.A., vol. 101, No. 28, pp. 9528 to 9533, 2004.
Xia, Y. L. et al., “Pulsed Dual Electrospray Ionization for Ion/Ion Reactions”, American Society for Mass Spectrometry, 16, pp. 1750 to 1756, 2005.
McLuckey, S.A. et al., “Ion Parking During Ion/Ion Reactions in Electrodynamic Ion Traps”, Analytical Chemistry, vol. 74, No. 2, pp. 336 to 346, Jan. 15, 2002.
Hager James W.
Londry Frank A.
Applera Corporation
Bereskin and Parr
Lee John R.
MDS Inc.
Vanore David A.
LandOfFree
Method for providing barrier fields at the entrance and exit... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for providing barrier fields at the entrance and exit..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for providing barrier fields at the entrance and exit... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3839069