Patent ID: 7582867
Filing Date: 2009-09-01
Classification: H01J

Abstract:
1. A mass spectrometer comprising: a sample inlet; a mass separator configured to receive at least a portion of a sample from the sample inlet, the mass separator comprising first and second sets of electrode components, individual ones of the components comprising a surface, wherein, in a cross section of the mass separator, the surfaces of the first set of components oppose each other, the surfaces of the second set of components oppose each other, wherein the opposing surfaces of the first and second sets of components define a volume comprising a first distance corresponding to a half a distance intermediate opposing surfaces of the first set of components and a second distance corresponding to a half a distance intermediate opposing surfaces of the second set of components, wherein a ratio of the first distance to the second distance comprises from about 0.84 to about 1.2, and an electrode spacing distance between the first components, the electrode spacing distance being less than the product of a spacer maximum factor times the second distance; and a detector configured to receive and detect ions from the mass separator.