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Circular ring ion trap and circular ring ion trap array

An ion trap and ring technology, applied in dynamic spectrometers, trajectory-stabilized spectrometers, mass spectrometers, etc., can solve problems affecting the overall performance of ion traps, large mechanical errors, etc., achieve powerful ion storage and analysis capabilities, and improve sensitivity Effect

Inactive Publication Date: 2009-02-11
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, the longer the electrode is processed, the greater the mechanical error will be, which will affect the overall performance of the ion trap

Method used

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  • Circular ring ion trap and circular ring ion trap array
  • Circular ring ion trap and circular ring ion trap array
  • Circular ring ion trap and circular ring ion trap array

Examples

Experimental program
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Effect test

Embodiment 1

[0039] according to Image 6 To further illustrate the structure and working principle of the circular ion trap-time-of-flight mass spectrometer composed of the circular ion trap and the time-of-flight recipe instrument.

[0040] Image 6 Among them, 602 and 614 are two flat ring electrodes that form the ring ion trap. Two flat ring electrodes 602 and 614 are shorted together and apply a high-frequency voltage signal, while boundary electrodes 601 and 603 respectively apply a DC voltage signal, thus generating An electric field region dominated by a quadrupole field can store ions entering it, and we can call this region an ion storage region. In practical applications, we can use external ionization or internal ionization to obtain ions, and then trap the ions in the ion storage area. In the process of ion capture, a buffer gas, such as helium, can be used to cool the ions by collision, so that the kinetic energy of the ions can be reduced to around 0, and the efficiency a...

Embodiment 2

[0049] This embodiment describes the principle and process of using the circular ion trap array of the present invention to store and analyze ions. The number of stored ions and the sensitivity of mass spectrometry can be greatly improved by using a circular ion trap array.

[0050] first use Figure 4 To illustrate how to apply a suitable voltage to a circular ion trap array to generate an ion confinement electric field. Figure 4 Among them, 41, 42, 43, and 44 are flat ring electrodes forming the ring ion trap, and 45 and 46 are boundary electrodes. When the ring ion trap is working, the adjacent plate ring electrodes apply high-frequency voltage signals with the same amplitude and 180° phase difference. exist Figure 4In the middle, the phases of the high-frequency signals applied on 31 and 33 are the same, the phases of the high-frequency signals applied on 32 and 34 are the same, and the phases of the high-frequency signals on 31 and 32 are 180° different. In this way...

example 1

[0059] As mentioned in Example 1, the circular ion trap itself has a strong ion storage capacity, and a circular ion trap array contains multiple ion binding regions, and its ability to store ions will be several times that of the circular ion trap. ability. Therefore, the use of circular ion trap arrays for ion storage and mass analysis can greatly improve the sensitivity of analysis and detection.

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Abstract

The invention relates to a circular ring ion trap and a circular ring ion trap array used for an ion storage device with ultra high capacity and a mass analyzer which is used for carrying out the separation and the detection according to the characteristics of an ion, such as the mass-to-charge ratio of the ion, and the like. The circular ring ion trap comprises an ion lead-in hole and an ion lead-out hole. Two parallel annular electrodes with flat hollow circular ring structures, and two cylindrical circular rings with different outside diameters and perpendicular to the flat annular electrodes form an inner and an outer boundary electrodes. The two flat annular electrodes are arranged in parallel and vertically, and share the same axis center with the two boundary electrodes; the boundary electrode with a small diameter is positioned on the inner side of the flat hollow annular electrodes; the boundary electrode with a large diameter is positioned on the outer side of the flat hollow annular electrodes; a gap or an insulating material is arranged in the boundary electrodes and the flat annular electrodes, so as to ensure the electric insulation among the electrodes; a high-frequency voltage signal is applied to the upper and the lower flat annular electrodes; the boundary electrodes are grounded or a DC voltage is applied to the boundary electrodes to form an ion storage area. Under the externally applied electric field, the ion is captured, stored, cooled or optionally discharged outside a trap.

Description

technical field [0001] The circular ion trap and the circular ion trap array of the present invention are related to ion storage and mass analysis technology, in particular to an ultra-large capacity ion storage device and a mass analyzer for separating and detecting ions according to their mass-to-charge ratio and other characteristics . technical background [0002] Due to its high sensitivity in detection, mass spectrometry has become one of the most widely used analytical techniques in the world. It has been widely used in many fields such as chemistry, biology, medicine, pharmaceutical industry and environmental protection. There are many types of mass spectrometers that are commercially available and used by many companies, research institutions, and universities, including magnetic mass spectrometers, time-of-flight mass spectrometers, quadrupole mass spectrometers, ion trap mass spectrometers, Fourier cyclotron resonance Mass spectrometers, orbital ion trap mass spe...

Claims

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Application Information

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IPC IPC(8): H01J49/42
Inventor 李晓旭蒋公羽罗婵杨鹏汪源源丁传凡方向
Owner FUDAN UNIV
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