Method and apparatus for ion fragmentation by electron capture

Details Method and apparatus for ion fragmentation by electron capture Method and apparatus for ion fragmentation by electron capture

2005-03-29

2009-11-03

Vanore, David A (Department: 2881)

Radiant energy

Ionic separation or analysis

Methods

C250S281000, C250S283000, C250S286000, C250S288000, C250S292000

Reexamination Certificate

active

07612335

ABSTRACT:
The present invention relates to a method and apparatus for ion fragmentation by electron capture. The present invention provides a method of generating fragment ions by electron capture, comprising; directing ions to be fragmented into a fragmentation chamber of a mass spectrometer into a fragmentation chamber of a mass spectrometer arrangement; trapping at least some of the ions to be fragmented in at least one direction of the fragmentation chamber by using a magnetic field, the ions being trapped within a volume V; generating an electron beam using an electron source located away from the volume V; irradiating the trapped ions in the volume V with the electrons generated by the electron source in the presence of the said magnetic field, so as to cause dissociation; and ejecting the resultant fragment ions from the fragmentation chamber for subsequent analysis at a different location away from the fragmentation chamber.

REFERENCES:
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patent: 2003/0183760 (2003-10-01), Tsybin et al.
patent: 2004/0155180 (2004-08-01), Zubarev
patent: 2004/0245448 (2004-12-01), Glish et al.
patent: WO 02/078048 (2002-10-01), None
patent: WO 02078048 (2002-10-01), None
patent: WO 03/102545 (2003-12-01), None

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