Mass spectrum analyzer and analyzing method thereof

Abstract

The invention relates to the technical field of mass analysis of analytical instruments, in particular to a mass spectrum analyzer and an analyzing method thereof. The mass spectrum analyzer comprises a magnetic field generating device, a vacuum system, an ion source, an ion accelerator and a series of electrodes. The magnetic field generating device is used for forming a high-strength magnetic field in annular space, an annular axle line exists in the annular space, and magnetic lines of the high-strength magnetic field and the axle line are orthogonal; the vacuum system is used for forming ultrahigh vacuum in the annular space; the ion source is used for generating analyzed ions; the ion accelerator accelerates the analyzed ions which enter an ion annular motion track basically along the axle line and sustain circumnutation for a while; at least parts of the electrodes arranged around the annular axle line are used for detecting image charges induced on the ions in a circumnutation process. According to the mass spectrum analyzer and the analyzing method thereof, the image current signal frequency is improved effectively, the limit electrodes can prevent ions from being diffused and escaping, the magnetic field distribution is even, the mass spectrum quality is improved effectively, and the market prospect is good.

Description

[technical field] [0001] The invention relates to the technical field of mass analysis in analytical instruments, in particular to a mass spectrometer and an analysis method thereof. [Background technique] [0002] Mass spectrometer, also known as mass spectrometer, is an instrument used to separate and detect different chemical or biological components. It separates and detects substances according to the mass of atoms, molecules or molecular fragments of substances according to the state and results of the movement of charged particles in an electromagnetic field. composition. Magnetic mass spectrometer is a kind of mass spectrometer, which has experienced a long history of development. From the traditional magnetic deflection mass spectrometer and magnetic cyclotron mass spectrometer to the modern Fourier transform magnetic cyclotron resonance mass spectrometer (FTICR), they all use the movement of charged ions in a magnetic field to analyze their species. Mass resoluti...

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that the superconducting magnet of the existing FTICR mass spectrometer is expensive, the magnetic field strength of the permanent magnet is insufficient, and the frequency of the image current is low

The invention provides a design scheme with compact structure and low cost, which solves the problem of insufficient magnetic field strength in the space where the ion orbit is located, and further uses multiple image current pickup electrodes to solve the problem of low signal frequency

Images