The 16th International Conference on Accelerator Mass Spectrometry

Development of 129I measurement technology with the home-made compact AMS facility at CIAE

PSA-42

21 Oct 2024, 17:35

20m

Lobby and Hallway , 2nd Floor (( Poster session A should be set up in the morning.))

Poster New and Advanced AMS Techniques Poster Session A

Speakers

Wenhui Zhang Ming He (中国原子能科学研究院)

Description

129I is a long-lived nuclide with very low nature level, but the presence of 129I in the environment has changed significantly since the beginning of the nuclear era. Accelerator mass spectrometer (AMS) is the most sensitive method for 129I measurement, which is widely used in environmental monitoring, geological evolution dating, nuclear activities tracking and other fields. For further expanding the applications of 129I, a home-made compact AMS facility has been developed by China Institute of Atomic Energy (CIAE), recently. In this paper, the measurement technology of 129I has been established with this facility. Charge state 2+ is selected at high-energy side and transmission efficiency of 55% for 127I2+ is obtained. The measurement sensitivity of 129I/127I≈1.5×10-14 has been achieved. At present, this facility can be used for routine measurement of 129I.
Keywords: 129I, compact AMS, home-made, measurement technology

Presentation materials

Development of 129I measurement ---AMS16 confenrence.docx