Patent ID: 9472387
Filing Date: 2016-10-18
CPC Classification: H01J

Claim Text:
1. A system for reconstructing a separation profile of a precursor ion in a tandem mass spectrometry experiment from multiple scans across a mass range, comprising: a separation device that separates ions from a sample; a mass filter that receives the ions from the separation device and filters the ions by, in each of two or more scans across a mass range, stepping a transmission window that has a constant rate of precursor ion transmission for each precursor ion across the mass range, producing a series of overlapping transmission windows across the mass range for each scan of the two or more scans; a fragmentation device that fragments the precursor ions produced at each step; a mass analyzer that analyzes resulting product ions, producing a product ion spectrum for each step of the transmission window and a plurality of product ion spectra for the mass range for the each scan; and a processor in communication with the mass filter and the mass analyzer that