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Accelerator mass spectrometry method and system

A technology of accelerator mass spectrometry and measurement system, which is applied in the field of accelerator mass spectrometry, can solve the problems that the abundance sensitivity cannot meet the measurement requirements, and achieve the effect of simple structure, high energy and strong beam current

Active Publication Date: 2019-05-31
QIXIANHE (BEIJING) TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, due to the development of geology, environment, archeology, marine and other disciplines, the isotope abundance ratio of nuclides to be measured is within 10 -12 —10 -17 range, the abundance sensitivity of existing AMS instruments cannot meet the needs of measurement

Method used

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  • Accelerator mass spectrometry method and system
  • Accelerator mass spectrometry method and system
  • Accelerator mass spectrometry method and system

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Embodiment 1

[0037] refer to figure 2 , which shows a schematic structural diagram of an accelerator mass spectrometry measurement system according to an embodiment of the present application, which may specifically include:

[0038] ECR high-current positive ion source subsystem 20, injector subsystem 21, high-current accelerator subsystem 22, high-energy analysis subsystem 23 and high-resolution detector subsystem 24;

[0039] The ECR high-current positive ion source subsystem 20, the injector subsystem 21, the high-current accelerator subsystem 22, the high-energy analysis subsystem 23 and the high-resolution detector subsystem 24 are connected in sequence;

[0040] Such as figure 2 As shown, the ECR high-current positive ion source subsystem 20 is connected to the input terminal of the injector subsystem 21, and the output terminal of the injector subsystem is connected to the input terminal of the high-current accelerator subsystem 22; the output terminal of the high-current accele...

Embodiment 2

[0089] refer to image 3 , which shows a schematic flow chart of an accelerator mass spectrometry method of the present application, including:

[0090] Step 310, using the ECR high-current positive ion source subsystem to generate multiple-charged high-current positive ions;

[0091] As described in Embodiment 1, the ECR high-current positive ion source can be used to generate corresponding multiple-charged high-current positive ions for the object to be measured. For example, produce Be2+ or Be3+ ions.

[0092] Of course, the embodiment of the present application can be used for the measurement of 10Be and 14C, and can also be used for the measurement of 3H, 26Al, 32Si, 36Cl, 41Ca, 129I, U and Pu isotopes, super actinides and other nuclides. In particular, it can realize highly sensitive measurement of inert gases such as 85Kr and 133Xe. Correspondingly, positive ion beams of multiple charge states of corresponding elements can be generated.

[0093] Step 320, injecting ...

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Abstract

The embodiment of the application provides an accelerator mass spectrometry system and relates to the technical field of AMS. The accelerator mass spectrometry system comprises an ECR strong current positive ion source subsystem, an injector subsystem, a strong current accelerator subsystem, a high-energy analysis subsystem and a high-resolution detector subsystem which are successively connected.The ECR strong current positive ion source subsystem is configured to generate strong current positive ions in multiple charge states. The strong current accelerator subsystem is configured to directly accelerate the strong current positive ions. The accelerator mass spectrometry system has the advantages of strong beam current, high total efficiency, and good background lowering capability, andcan greatly improve the abundance sensitivity of the spectrometry.

Description

technical field [0001] The present application relates to the technical field of accelerator mass spectrometry, in particular to an accelerator mass spectrometry measurement method and system. Background technique [0002] AMS (Accelerator Mass Spectrometry, accelerator mass spectrometry) is a high-energy isotope mass spectrometer based on accelerator technology and ion detector technology. Measurement of Abundance Ratio. [0003] Since the emergence of AMS in the late 1970s, sputtering negative ion sources have been used. The main reason is that on the one hand, the tandem accelerator has good energy singleness and relatively high energy, which is beneficial to eliminate background. On the other hand, the negative ion source has the ability to exclude the local isobaric isotopes, and the isobaric isotopes of some nuclides are not capable of forming negative ions. For example, when measuring 14C, the isobaric 14N cannot form negative ions; when measuring 26Al, 26Mg cannot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J49/00H01J49/10G01N27/64
CPCH01J49/0086H01J27/18B01D59/44H01J49/105
Inventor 姜山
Owner QIXIANHE (BEIJING) TECH CO LTD
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