Multifunctional carbon 14 sample preparation system and gas circuit control method

Abstract

The invention relates to the field of scientific research, especially to a multifunctional carbon-14 sample preparation system and a gas circuit control method. The multifunctional carbon-14 sample preparation system is characterized in that the system contains a graphite target synthetic system and a carbon dioxide generation and purification system; the graphite target synthetic system is connected with a vacuum-pumping device and contains more than one paratactic graphite target synthetic devices; each of the graphite target synthetic device contains a reaction tube, inside which iron powder and titanium hydride are arranged; the reaction tube is arranged parallel to a carbon dioxide cooling device; the graphite target synthetic system extends to form more than one connecting pipe openings which are detachably connected with the carbon dioxide generation and purification system; and a valve is arranged at the connecting pipe. The graphite target synthetic system and the carbon dioxide generation and purification system can operate simultaneously, are small in size, occupy little space and have high flexibility and high degree of automation. Cost of only one of the system is required. The multifunctional carbon-14 sample preparation system can widely be popularized and applied.

Description

technical field [0001] The invention relates to the field of scientific research, in particular to a multifunctional carbon fourteen sample preparation system and a gas path control method. Background technique [0002] my country's research on global change, especially short-scale environmental change, is far behind the international level, and it is difficult to publish results in international high-end journals. The fundamental reason is the lack of precise dating and effective environmental tracking methods. In the 21st century, the knowledge needs of the earth's environmental science and economic and social development urgently require high-tech means, and my country's application level of accelerator mass spectrometry technology lags behind foreign countries for nearly 10 years, and it needs to catch up. Accelerator mass spectrometry is a high-energy mass spectrometer that combines an accelerator with a mass spectrometer. It directly measures the atomic number of radio...

AI Technical Summary

Problems solved by technology

usually a 14 The processing cycle of C accelerator samples (with a carbon content of about 1 mg) is about 3-6 months, which is a very important scientific research project. The research found that the data cannot be obtained in time, and the low utilization rate of the system is an important bottleneck restricting the sample preparation cycle.

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