Method and apparatus for spatial compression and increased mobility resolution of ions
AssigneeBattelle Memorial Institute
InventorsYehia M. Ibrahim, Sandilya Garimella, Richard D. Smith
Life of this patent
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Abstract
Methods and apparatuses for ion peak compression and increasing resolution of ions are disclosed. Packets of ions are introduced into a device. A first electric field is applied for dispersing the ion packets temporally or spatially according to their mobilities. A second intermittent traveling wave is applied for regrouping or merging the dispersed ion packets into a lesser number of trapping regions with narrower peaks. The ions packets are compressed into the narrower peak regions by varying a duty cycle of the intermittent traveling wave.
Claims21
-20. (canceled)
An ion manipulation apparatus comprising:
- a first region configured to receive an ion packet comprising a plurality of ions;
- a second region separate from the first region, the second region configured to:
- receive a first ion sub-packet comprising a first portion of the plurality of ions of the ion packet, and
- generate an electric field waveform traveling along a first direction and having a varying duty cycle, the electric field waveform configured to drive the received first ion sub-packet along the first direction and generate a compressed ion sub-packet from the first ion sub-packet.
A method comprising:
- receiving, by a first region of an ion manipulation apparatus, an ion packet comprising a plurality of ions;
- receiving, by a second region of the ion manipulation apparatus, a first ion sub-packet comprising a first portion of the plurality of ions of the ion packet, wherein the second region is separate from the first region;
- and
- generating, in the second region, an electric field waveform traveling along a first direction and having a varying duty cycle, the electric field waveform configured to drive the received first ion sub-packet along the first direction and generate a compressed ion sub-packet from the first ion sub-packet.
Dependencies are inferred from the claim text.