Abstract:
With the technology improvement, a compact Accelerator Mass Spectrometry (AMS) device has been developed by China Institute of Atomic Energy on the basis of the low-energy AMS device developed earlier. The measurement method of
239Pu was investigated with newly established compact AMS device. In order to establish the
239Pu transport with the AMS system, the relationships of the transmission efficiency with the type of stripping gas, the selection of charge states, the thickness of stripping gas and the pre-acceleration voltage were systematically studied by using
238U, and then the optimized conditions of
239Pu measurement with the AMS system is established. It is verified that the linear
R2 of the device is 0.999 7 and the detection limit of
239Pu is 0.1 fg through a series of standard samples and blank samples. It lays a foundation for the wide application of
239Pu in environmental and geological fields.
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