Mass spectrometer with ion fragmentation by reaction with electrons

(19)

(11)

EP 1 598 850 A3

(12)	EUROPEAN PATENT APPLICATION

(88)	Date of publication A3:
	06.12.2006 Bulletin 2006/49

(43)	Date of publication A2:
	23.11.2005 Bulletin 2005/47

(21)	Application number: 05010587.3

(22)	Date of filing: 17.05.2005

(51)

International Patent Classification (IPC):

H01J 49/42^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR LV MK YU

(30)

Priority:

19.05.2004 DE 102004025262

(71)	Applicant: Bruker Daltonik GmbH
	28359 Bremen (DE)

(72)	Inventor:
	Franzen, Jochen Dr. 28359 Bremen (DE)

(54)	Mass spectrometer with ion fragmentation by reaction with electrons

(57) The invention relates to a mass spectrometer, in particular a time-of-flight mass spectrometer, with fragmentation of pre-selected molecule ions for the acquisition of daughter ion spectra.
The invention consists in an instrument with devices for generating multiply charged ions of the molecule of interest, for selecting a multiply charged ion species by a mass filter, for fragmenting the selected ions by allowing them to react with low energy electrons in an RF ion guide system, and for analyzing the fragment ions in a mass analyzer.

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