Drift tube for an ion mobility spectrometer with integrated gas channel
AssigneeBruker Daltonik GmbH
InventorsJürgen Landgraf, Jürgen Riemenschneider
Life of this patent
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Abstract
A drift tube for an ion mobility spectrometer is assembled from stacked tube segments and has electrodes that generate an electric drift field and are electrically contactable from the outside of the drift tube. Most of the tube segments have at least two separate apertures so that, when the segments are stacked, these apertures form a drift region and at least one integrated gas channel both of which run parallel to the axis of the drift tube. At least one tube segment is inserted into the stack in which the two apertures are connected to form a gas channel transverse to the axis of the drift tube so that the drift region is connected to the gas channel at that tube segment.
Claims14
A drift tube for use in an ion mobility spectrometer, having an axis and comprising:
- a plurality of tube segments, each of the tube segments having a first aperture and a second aperture, unconnected to the first aperture, both apertures passing through that tube segment;
- means for connecting the tube segments in a stack with gas-tight connections between the tube segments so that the first apertures line up to form a drift region having a constant cross-section and extending along the axis of the drift tube and the second apertures line up to form a gas channel extending parallel to the axis of the drift tube;
- and
- wherein at least one tube segment having a first aperture and a second aperture connected to the first aperture by a gas channel that extends transverse to the axis of the drift tube, is inserted into the stack so that the first aperture lines up with the drift region and the second aperture lines up with the gas channel and the drift region is connected to the gas channel at the location of that tube segment.
Dependencies are inferred from the claim text.