Linear ion trap for mass spectrometry

Details Linear ion trap for mass spectrometry Linear ion trap for mass spectrometry

2008-01-29

2008-01-29

Berman, Jack I. (Department: 2881)

Radiant energy

Ionic separation or analysis

Cyclically varying ion selecting field means

C250S292000, C250S288000, C250S281000, C250S282000

Reexamination Certificate

active

11216459

ABSTRACT:
A method for manipulating ions in an ion trap includes storing ions, spatially compressing, and ejecting selected ions according to mass-to-charge ratio. An ion trap includes an injection port, an arm having a first and a second end for confining and spatially compressing the ions, and an ejection port for ejecting the ions from the second end. The arm includes two pairs of opposing electrodes, which provide a quadrupole electric field potential at any cross-section of the ion trap. The distance between opposing electrodes and the cross-sectional area of the electrodes increases from the first to second end. The electrodes may be tapered cylindrical rods or of hyperbolic cross-section. Ions selected for ejection are spatially compressed into a region at the second (wider) end. The ion trap may include one arm, with either orthogonal or axial ejection, or two arms with a central insert for orthogonal ejection.

REFERENCES:
patent: 5420425 (1995-05-01), Bier et al.
patent: 5576540 (1996-11-01), Jolliffe
patent: 6177668 (2001-01-01), Hager
patent: 6504148 (2003-01-01), Hager
patent: 6617577 (2003-09-01), Krutchinsky et al.
patent: 6703607 (2004-03-01), Stott et al.
patent: 6809318 (2004-10-01), Krutchinsky et al.
patent: 2004/0011956 (2004-01-01), Londry et al.
patent: 2004/0026613 (2004-02-01), Bateman et al.
patent: 2004/0222369 (2004-11-01), Makarov et al.
Hager, J., “A New Linear Ion Trap Mass Spectrometer,”Rapid Commun. Mass Spectrom., vol. 16, pp. 512-526 (2002).
Schwartz, J., et al., “A Two-Dimensional Quadrupole.Ion Trap Mass Spectrometer,”J. Am. Soc. Mass Spectrom, vol. 13, pp. 659-669 (2002).
Stafford, Jr., G., “Ion Trap Mass Spectrometry: A Personal Perspective,”J. Am. Soc. Mass Spectrom. vol. 13, pp. 589-596 (2002).

Affiliated with

Also associated with

Rating

Linear ion trap for mass spectrometry does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Linear ion trap for mass spectrometry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Linear ion trap for mass spectrometry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3926754