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1. (WO2018020712) MASS SPECTROMETER, ION OPTICAL DEVICE, AND METHOD FOR ION MANIPULATION IN MASS SPECTROMETER

Pub. No.:    WO/2018/020712    International Application No.:    PCT/JP2017/004612
Publication Date: Fri Feb 02 00:59:59 CET 2018 International Filing Date: Thu Feb 09 00:59:59 CET 2017
IPC: H01J 49/42
H01J 49/06
Applicants: SHIMADZU CORPORATION
Inventors: ZHANG, Xiaoqiang
SUN, Wenjian
Title: MASS SPECTROMETER, ION OPTICAL DEVICE, AND METHOD FOR ION MANIPULATION IN MASS SPECTROMETER
Abstract:
The present invention provides a mass spectrometer, an ion optical device, and a method for ion manipulation in a mass spectrometer. The mass spectrometer comprises a mass analyzer; and further comprises an ion guiding device, including two electrode arrays that are positioned in parallel with each other, each of the electrode arrays consisting of at least two ring electrodes that are concentrically disposed or at least three linear electrode assemblies that have a radial distribution; and a power supply means, configured to apply a voltage on at least a part of the ring electrodes, to form a radio-frequency electric field and a DC electric field. By means of the radio-frequency electric field and the DC electric field, ions are allowed to be stored in a region between the two arrays, and controlled to be sequentially released along a radial direction according to a preset mass-to-charge ratio requirement, and then exit the ion guiding device and enter the mass analyzer for mass analysis. Through the technical solution of the present invention, a high ion utilization efficiency and a large ion storage capacity, as well as the miniaturization of instrument, are achieved.