Title:
VERTICAL ACCELERATION TIME-OF-FLIGHT TYPE MASS SPECTROGRAPH
Document Type and Number:
Japanese Patent JP3746629
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an ion extraction electrode in which a contour line showing intensity distribution of an electric field is not distorted even when the ion extraction electrode having specified thickness is used in the end of a mesh, and ions can be accelerated in the perpendicular direction to the ion introduction direction in the vicinity of the ion extraction electrode similarly to the vicinity of the mesh.
SOLUTION: In a vertical acceleration time-of-flight type mass spectrograph having a vertical acceleration region comprising an ion pushing-out electrode 9 and an ion extraction electrode facing each other, a means 17 giving an intermediate potential between the potential of the ion extraction electrode and that of the ion pushing-out electrode is installed on the circumfeential wall surface in a vertical acceleration region, and potential distribution between the ion pushing-out electrode and the ion extraction electrode is corrected.
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Inventors:
Fumio Kunihiro
Application Number:
JP6441499A
Publication Date:
February 15, 2006
Filing Date:
March 11, 1999
Export Citation:
Assignee:
JEOL Ltd.
International Classes:
H01J49/40; (IPC1-7): H01J49/40
Domestic Patent References:
| JP2000011947A | ||||
| JP3503815A | ||||
| JP11513176A |