Progress in AMS measurement of U isotope ratios in nanogram U samples

[摘要] The determination of uranium isotopic composition in ultra-trace U samples is very important in different fields, especially for the nuclear forensics. A new Accelerator Mass Spectrometry (AMS) technique has been developed for the measurement of uranium isotopic ratios in ng level uranium samples at China Institute of Atomic Energy (CIAE). Recently, the method was further optimized and developed by using a series of blank and standard samples. The results show that the U-236 at the femtogram level can be determined in nanogram U samples by the newly developed AMS technique at CAB. The experimental setup, performances and results will be detailed in this contribution. (C) 2015 Elsevier B.V. All rights reserved.

[发布日期] 2015-10-15

[效力级别]  Proceedings Paper

[关键词] Accelerator Mass Spectrometry;Nanogram uranium;Isotope ratios