Ion transport device

Abstract

This invention relates to radio frequency devices for transporting, focusing and retaining ions, which are used in mass spectrometry and ion mobility spectrometry applications. An ion transport device comprises an ion transport channel, which has an inlet and an outlet ends, and is bounded by surfaces with arranged radio frequency and/or DC electrodes that generate a traveling-wave field directing ions toward the channel outlet end, wherein the electrodes are arranged in the outlet section of the device to ensure the fragmentation or thermalization of ions, differing from other electrodes arranged in the remaining section of the device by their power supply mode and/or geometry. The technical result consists in achieving high efficiency of ion transport to the next chamber with a different pressure; ensuring high sensitivity of the device during short data accumulation times; reducing gas load on the pumps at subsequent stages; preventing ion packets from blurring during their transport through the device; and preparing ion packets for subsequent manipulations at the subsequent stages of the mass spectrometer, namely, the fragmentation and/or thermalization of ions.

Dependencies are inferred from the claim text.