Radiant energy – Ionic separation or analysis – Cyclically varying ion selecting field means
Reexamination Certificate
2011-01-11
2011-01-11
Wells, Nikita (Department: 2881)
Radiant energy
Ionic separation or analysis
Cyclically varying ion selecting field means
C250S281000, C250S282000, C250S3960ML, C250S42300F, C250S424000
Reexamination Certificate
active
07868289
ABSTRACT:
An ion guide includes a plurality of rods, arranged about an axis that extends lengthwise from one end to the other of the guide. The rods guide ions in a guide region along and about the axis. A conductive casing surrounds the rods. The casing and the rods are geometrically arranged to produce an axial electric field along the axis. Specifically, the geometry is such that a first constant applied DC voltage (UDC), applied to the rods, and a second constant applied DC voltage (UCASE) applied to the casing, produce a voltage gradient between said casing and said axis that has a different magnitude at different positions along said axis.
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Cousins Lisa
Javahery Gholamreza
Tomski Ilia
Ionics Mass Spectrometry Group Inc.
Smith Johnnie L
Wells Nikita
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