Patent ID: 9224586
Filing Date: 2015-12-29
Classification: H01J

Abstract:
1. An apparatus for mass spectrometry comprising: a. at least two mechanistically different sources of ionized analyte; b. a mass analyzer comprising at least one ion trap having a ring electrode and two end-cap electrodes; c. at least one frequency scanning subsystem configured to generate a constant amplitude RF trapping frequency scan in a series of RF frequency steps, wherein during each step the RF frequency is maintained at a value for a whole integer number of cycles and then stepped to a different RF frequency; and d. at least one charge detector and at least one charge amplification detector; wherein the at least one ion trap is configured to operate via the RF frequency scan by applying the stepped constant amplitude RF trapping frequency scan to the ring electrode; and wherein the apparatus has an extended mass detection range from 10 to 10 16 Da.