Radiant energy – Ionic separation or analysis – Cyclically varying ion selecting field means
Reexamination Certificate
2011-05-10
2011-05-10
Souw, Bernard E (Department: 2881)
Radiant energy
Ionic separation or analysis
Cyclically varying ion selecting field means
C250S281000, C250S288000
Reexamination Certificate
active
07939799
ABSTRACT:
A tandem Fourier transform ion cyclotron resonance mass spectrometer is provided. In the mass spectrometer, the ions selected by a FT-ICR mass analyzer, which can perform an ion selection process and a mass measurement process with a time interval between the processes, are transmitted through an ion guide to a collision cell, which is located a predetermined distance from the FT-ICR mass analyzer, to split into fragment ions. The fragment ions are transmitted to the FT-ICR mass analyzer that measures the mass of the fragment ions. The fragment ions are generated in the collision cell60established separately from the FT-ICR mass analyzer40according to the mass spectrometer. Accordingly, It can solve various problems (e.g., the radius reduction of cyclotron motion of colliding ions, or the removal of periphery gas after generating the fragment ions) occurred in a tandem mass spectrometer using a conventional tandem-in-time mass analysis method. Also, a high resolution and with sensitivity measurement can be achieved. Moreover, when a reagent gas instead of a collision gas in the collision cell is injected, the gas phase reaction of the selected ions and the reagent gas can be observed, and the mass of the ions generated in the gas phase reaction can be measured.
REFERENCES:
patent: 4283626 (1981-08-01), Siegel
patent: 4535235 (1985-08-01), McIver, Jr.
patent: 5854485 (1998-12-01), Bergmann
patent: 6504148 (2003-01-01), Hager
patent: 6770871 (2004-08-01), Wang et al.
patent: 7255992 (2007-08-01), Ecker et al.
patent: 7329864 (2008-02-01), Wang
patent: 2005/0178963 (2005-08-01), Londry et al.
patent: 2006/0289741 (2006-12-01), Li
patent: 2007/0057172 (2007-03-01), Wang
Choi Myoung Choul
Kim Hyun Sik
Yoo Jong Shin
Korea Basic Science Institute
Rabin & Berdo PC
Smyth Andrew
Souw Bernard E
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