Accelerator mass spectrum device for isotope measurement

Abstract

The embodiment of the invention provides an accelerator mass spectrum device for isotope measurement. The device comprises an ion source, an injection system, an accelerating tube, a gas stripping system, an analysis system and a detection system; the ion source is connected with the injection system, the output end of the injection system is connected with the accelerating tube, the output end ofthe accelerating tube is connected with the gas stripping system, the output end of the gas stripping system is connected with the analysis system, and the analysis system is connected to the detection system; the ion source is used for generating isotope anions; the injection system separates isotope anions and injects the isotope anions into the accelerating tube alternately; the accelerating tube accelerates the anions separated by the injection system; the gas stripping system converts the accelerated negative ions into positive ions and disintegrates molecular ions; the analysis system analyzes the positive ions and then sends the positive ions to the detection system, and the detection system measures the positive ions. The device is compact in structure, and the related operation process is simple.

Description

technical field [0001] Embodiments of the invention relate to an accelerator mass spectrometry device for isotope measurements. Background technique [0002] The accelerator mass spectrometry device is a high-energy isotope mass spectrometry device based on accelerator technology and ion detector technology, which can be used for nuclide measurement and isotope abundance ratio measurement. For nuclide measurements, such as measuring 14 C, can effectively eliminate various background interferences and improve measurement sensitivity; for the measurement of isotope abundance ratio, at present, the analysis method of isotope acceleration and alternate measurement is adopted, such as measuring carbon isotopes, usually need to 12 C. 13 C and 14 C is injected alternately to obtain the abundance ratio between isotopes. However, this isotope measurement method has certain requirements on the energy of the injected magnet and the alternating frequency, which makes the measurement ...

AI Technical Summary

Problems solved by technology

For nuclide measurements, such as measuring 14 C, can effectively eliminate various background interferences and improve measurement sensitivity; for the measurement of isotope abundance ratio, at present, the analysis method of isotope acceleration and alternate measurement is adopted, such as measuring carbon isotopes, usually need to 12 C. 13 C and 14 C is injected alternately to obtain the abundance ratio between isotopes. However, this isotope measurement method has certain requirements on the energy of the injected magnet and the alternating frequency, which makes the measurement complicated.

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