Patent · US Active

Mass spectrometer, mass spectrometry method and detection system

US11694887B2 · kind B2 · utility

0Cited by

5References

12Claims

0Family size

Assignee

Shimadzu Corporation · JP

Inventors

Yiming LIN · Berlin, DE
Wenjian Sun · Shanghai, CN

Key dates

Filing date	May 17, 2021
Grant date	Jul 4, 2023
Priority date	—
Expiry date	May 17, 2041

Classification

Technology area (CPC G)Physics
CPC primaryG01N2030/025
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to a mass spectrometer, a mass spectrometry method and a detection system. The mass spectrometer includes a vacuum chamber having a working pressure being 0.1 Pa≤P≤10 Pa; a linear ion trap, arranged in the vacuum chamber, wherein a field radius r of the linear ion trap is r≤5 mm; and a power supply, configured to provide a radio-frequency voltage for the linear ion trap, a frequency f of the radio-frequency voltage being 2 MHz≤f≤10 MHz. Because a vacuum level is relatively low, this vacuum condition may be realized by selecting a roughing pump for evacuating; and compared with a combined pump unit which is generally selected by a traditional mass spectrometer using the linear ion trap and is composed of a turbo molecular pump and a roughing pump, the roughing pump has a lower pumping speed, smaller size and lower manufacturing cost.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.