公开(公告)号：CA2519601A1

公开(公告)日：2004-10-07

申请号：CA2519601

申请日：2004-03-19

Applicant: STC UNM

Inventor： ENKE CHRISTIE G

IPC: G01N20060101 ,  G01N27/64 ,  H01J49/00 ,  H01J49/40 ,  H01J49/42

Abstract: A distance of flight (DOF) approach to mass spectroscopy in which the resolution among the various ion masses is accomplished in space rather than time. A separate detector is associated with each ion mass resolution elemen t. The DOF mass spectrometer can serve as one element in a tandem arrangement, which has the capability to produce a full two-dimensional precursor/product spectrum for each bunch of ions extracted from the source. A "distance-of- flight" (DOF) mass analyzer, having an ion storage device (21) means for applying an ion extraction voltage pulse to said storage device (22, 23), a field free region, and detectors (29), is used in combination with time-of- flight (TOF) mass analysis for precursor and product dispersion. All the precursor ions can undergo a mass changing reaction simultaneously, while still retaining the essential information about the particular precursor m/zvalue from which each product m/z value emanated. Through the use of a tw o- dimensional detector, all the products ions from all the precursors can be detected for each batch of ions analyzed.