US 11,810,773 B2
Apparatus and methods for injecting ions into an electrostatic trap
Jesse D. Canterbury, Shoreline, WA (US); and Michael W. Senko, Sunnyvale, CA (US)
Assigned to Thermo Finnigan LLC, San Jose, CA (US)
Filed by THERMO FINNIGAN LLC, San Jose, CA (US)
Filed on Jan. 24, 2023, as Appl. No. 18/159,040.
Application 18/159,040 is a continuation of application No. 17/355,958, filed on Jun. 23, 2021, granted, now 11,581,180.
Prior Publication US 2023/0178356 A1, Jun. 8, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. H01J 49/42 (2006.01); H01J 49/00 (2006.01); H01J 49/06 (2006.01); H01J 49/02 (2006.01)
CPC H01J 49/4265 (2013.01) [H01J 49/0031 (2013.01); H01J 49/022 (2013.01); H01J 49/067 (2013.01); H01J 49/425 (2013.01); H01J 49/4295 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of operating a mass spectrometer system comprising an electrostatic trap mass analyzer, comprising:
introducing a first packet of ions into an electrostatic trap mass analyzer through a set of electrostatic lenses, wherein, during the introducing of the first packet of ions into the electrostatic trap mass analyzer, either the electrostatic lenses are operated in a first mode of operation or an injection voltage of a first pre-determined magnitude is applied to an electrode of the mass analyzer;
mass analyzing the first packet of ions using the electrostatic trap mass analyzer;
introducing a second packet of ions into the electrostatic trap mass analyzer through the set of electrostatic lenses, wherein, during the introducing of the second packet of ions into the electrostatic trap mass analyzer, either the electrostatic lenses are operated in a second mode of operation or an injection voltage of a second pre-determined magnitude is applied to the electrode of the mass analyzer; and
mass analyzing the second packet of ions using the electrostatic trap mass analyzer.