Surface discharge ionization source ion gate-free transference tube
An ion transfer tube and surface discharge technology, which is applied in the ion source/gun, parts of the particle separator tube, etc., can solve the problems of ion collision, reduced sensitivity, ion loss, etc., and achieves simple instrument assembly, easy miniaturization, Effects that are easy to batch
Inactive Publication Date: 2014-05-07
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology
However, the manufacturing method of the ion gate is complicated, and the existence of the ion gate will cause ions to collide with the ion gate, resulting in the loss of ions and reducing the sensitivity.
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[0017] A surface discharge ionization source - an ion transfer tube without an ion gate, including a drift region distributed along the axis, a grid, and an ion receiving electrode, and a surface discharge ion source is provided on the side of the drift region away from the ion receiving electrode; the surface discharge ion The source includes a pulse repeller electrode, a surface discharge high-voltage electrode and a ground electrode, and an insulating substrate. The pulse repeller electrode is placed perpendicular to the axis of the ion transfer tube, and a plate-shaped insulation is provided on the surface of the pulse repeller electrode near the drift region. The substrate, the surface discharge high-voltage electrode and the ground electrode are embedded in the insulating substrate, the discharge ends of the surface discharge high-voltage electrode and the ground electrode face the side away from the pulse repeller electrode, and their discharge ends are spaced apart from ...
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The invention discloses a surface discharge ionization source ion gate-free transference tube. The surface discharge ionization source ion gate-free transference tube is characterized in that surface discharge ionization is utilized for generating thin ion slices to replace a conventional ion gate, and a pulse electric field is utilized for introducing ions into a drift region. The instrument assembling is simple, and batch production and miniaturization are facilitated. The surface discharge ionization source ion gate-free transference tube is composed of a pulse repulsion electrode, a surface discharge ion source, the drift region, an ion receiving pole and the like which are axially distributed; and an object to be tested is ionized by the ion source, and generated product ions are respectively introduced to the drift region by the pulse repulsion electrode, fly in an electric field provided by a high voltage power supply, and are finally received and detected by the iron receiving pole.
Description
technical field [0001] The invention is a surface discharge ionization source-ion gate-free ion transfer tube, which is characterized in that the surface discharge ionization is used to generate a thin ion sheet to replace the traditional ion gate, which makes the instrument assembly simpler, easy to batch and miniaturize, and is formed along the axis Distributed pulse repeller electrode, surface discharge ion source, drift region, grid, ion receiving electrode and so on. The product ions produced by the ionization of the analyte by the ion source are respectively introduced into the drift region by the pulse repeller electrode, fly in the electric field provided by the high-voltage power supply, and are finally received and detected by the ion receiving electrode. The invention belongs to instrument analysis technology. Background technique [0002] Atmospheric chemical analysis methods have always been a research topic that has been widely concerned by human beings. Huma...
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IPC IPC(8): H01J49/16
Inventor 王卫国李海洋
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI