Time-of-flight mass spectrometer

By incorporating an ion focusing assembly, including an ion funnel and an electrostatic lens, into the time-of-flight mass spectrometer, the problem of low sensitivity caused by the broadening of the horizontal velocity component of ions was solved, resulting in higher detection efficiency and sensitivity.

CN224554320UActive Publication Date: 2026-07-24LIANYING YUEZHI SCIENCE INSTRUMENTS (WUHAN) CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
LIANYING YUEZHI SCIENCE INSTRUMENTS (WUHAN) CO LTD
Filing Date
2025-06-19
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In existing time-of-flight mass spectrometers, the horizontal velocity component of ions broadens in the flight tube, causing ions outside the effective detection area of ​​the detector to be undetectable, resulting in low sensitivity.

Method used

An ion focusing assembly, including an ion funnel and an electrostatic lens, is installed inside the flight tube. By applying electric and magnetic fields, the ions after flight are spatially and temporally focused, so that the ions are concentrated and reach the detector, thereby improving detection efficiency.

Benefits of technology

The use of an ion focusing component increases the number of ions detected by the detector, thereby improving the sensitivity of the time-of-flight mass spectrometer.

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Abstract

The time-of-flight mass spectrometer provided by the embodiment of the application comprises a flight tube, a detector and an ion focusing assembly, the detector and the ion focusing assembly are arranged in the flight tube, the ion focusing assembly is arranged at the front end of the detector, the flight tube is used for flight control of ions, the ion focusing assembly is used for focusing of the ions after flight, and the detector is used for detection of the focused ions. Through focusing of the ions after flight, the number of ions detected by the detector can be improved, and the sensitivity of the time-of-flight mass spectrometer is higher.
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