Title:
MASS SPECTROMETER
Document Type and Number:
Japanese Patent JP2023100094
Kind Code:
A
Abstract:
To reduce contamination of an ion optical element and the like by a neutral particle.SOLUTION: An aspect of a mass spectrometer according to the present invention, is a mass spectrometer having: ion sources (11 and 2) generating an ion derived from a sample component in an atmospheric pressure atmosphere; one or more intermediate vacuum chambers (12 and 13) from a space of a vacuum chamber (14) where a mass separator (7) separating an ion by mass separation is arranged. The mass spectrometer comprises: an ion transport part (3) that includes an ion outlet (3a) into a first intermediate vacuum chamber (12) which is a next step of an ion source, and transmits the ion into the first intermediate vacuum chamber from the ion source; an exhaust open part (12d) that exhausts in vacuum in the first intermediate vacuum chamber provided to a position at a front side of an ion flow discharged into the first intermediate vacuum chamber from the ion outlet; ion transfer open parts (5 and 5a) that is provided to a position on a line crossed to a straight line connecting the ion outlet and the exhaust open part, and transmits the ion to the next step from the first intermediate vacuum chamber; and an ion guide (4) that guides the ion transfer output part while focusing the ion discharged from the ion outlet by an action a high frequency electric field.SELECTED DRAWING: Figure 1
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Inventors:
NISHIGUCHI KATSU
Application Number:
JP2022000502A
Publication Date:
July 18, 2023
Filing Date:
January 05, 2022
Export Citation:
Assignee:
SHIMADZU CORP
International Classes:
H01J49/06; H01J49/04
Attorney, Agent or Firm:
Patent Attorney Corporation Kyoto International Patent Office