Compact AMS Measurement Technology for ¹²⁹I

A new compact accelerator mass spectrometer(AMS) facility, used for ¹⁴C, ¹²⁹I, ²³⁹Pu, etc. measurement, has been successfully established by China Institute of Atomic Energy(CIAE) recently. As ¹²⁹I is a commonly used nuclide for environmental tracing, the performance of ¹²⁹I measurement is crucial for the applications of the facility. After systematic research, ¹²⁹I measurement technologies of the compact AMS has been established. The measurement sensitivity and the measurement accuracy of ¹²⁹I/¹²⁷I reached to 1.5×10^-14 and 0.81%, respectively. The measurement results show that the compact AMS has reached the international advanced level and can lay the solid foundation for the application of ¹²⁹I in fields like nuclear environmental monitoring and marine pollution tracing.