What Is an Accelerator Mass Spectrometer?
Accelerator mass spectroscopic analysis (accelerator-based mass spectroscopic analysis) refers to a nuclear analysis technique that combines accelerator and mass spectrometry. The sample to be measured is ionized in the ion source of the accelerator, then the ion beam is extracted and accelerated, and then the accelerated ions are identified and recorded by the choice of charge state, charge-mass ratio, energy, and atomic number, and the isotope ratio is measured . [1]
Accelerator mass spectrometry
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- Accelerator-based mass spectroscopic analysis
- With traditional
- In order to overcome the shortcomings of traditional radioactive counting methods such as low sensitivity and large sampling volume, some people have tried to use the traditional low energy as early as the 1970s.
- Accelerator mass spectrometer
- Accelerator mass spectrometry is most commonly used for dating and isotope tracing. In fact, many areas of modern science and technology (such as archeology, biomedicine, geosciences, hydrology, cosmology, nuclear physics, etc.) rely heavily on accelerator mass spectrometry. [1]
- For example, it is used to determine the 14 C age of polar ice, and the 14 C in ice bubbles can be directly measured to establish a long-term ice time scale. It is used for dating of plant microfossils. Plant microfossils in lake sediments are an important way to study the paleoclimate of the Pleistocene, but there are very few samples, which cannot be determined by the traditional radioactive decay counting method. It is used to determine the 14 C concentration difference between fossil foraminifera and planktonic foraminifera fossils. It can be used to study the 14 C concentration change in the ancient ocean and the deep sea water cycle speed.