US 11,658,019 B2
IMR-MS reaction chamber
Alfons Jordan, Innsbruck (AT)
Assigned to lONICON ANALYTIK GESELLSCHAFT M.B.H., Innsbruck (AT)
Appl. No. 17/46,113
Filed by IONICON ANALYTIK GESELLSCHAFT M.B.H., Innsbruck (AT)
PCT Filed Sep. 27, 2019, PCT No. PCT/EP2019/076191
§ 371(c)(1), (2) Date Oct. 8, 2020,
PCT Pub. No. WO2020/065012, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 18197501 (EP), filed on Sep. 28, 2018.
Prior Publication US 2021/0057203 A1, Feb. 25, 2021
Int. Cl. H01J 49/14 (2006.01); H01J 49/06 (2006.01)
CPC H01J 49/145 (2013.01) [H01J 49/067 (2013.01); H01J 49/065 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A reaction chamber for an Ion Molecule Reaction-Mass Spectrometry (IMR-MS) apparatus or a Proton Transfer Reaction-Mass Spectrometry apparatus, comprising
at least one essentially gastight outer housing defining an outer space,
at least one pumping port,
a sample gas inlet,
an injection port for ions connectable with an ion source,
an exit connectable with a mass analyzer,
a reaction region between the injection port for ions and the exit,
at least three ion lenses with essentially constant orifice dimensions arranged around the reaction region and/or at least three ion lenses with different orifice dimensions arranged around the reaction region, and
at least one at least partly gastight sealing,
wherein the outer space comprises the space between the reaction region and the essentially gastight outer housing,
wherein the ion lenses are placed inside the essentially gastight outer housing, wherein between at least two adjacent ion lenses the at least one at least partly gastight sealing is mounted, wherein the room between at least other two ion lenses is such to allow a gas flow through said room from the reaction region into the outer space,
wherein for all ion lenses the distance between adjacent ion lenses is either the same as or smaller than the distance between the at least two adjacent ion lenses with the at least one at least partly gastight sealing between them.