• H.-T. Shen, X.-G. Wang, S. Jiang, M. He, K.-J. Dong, C.-L. Li, G.-Z. He, S.-L. Wu, J. Gong, L.-Y. Lu, S.-Y. Wu
  CIAE, Beijing
• S.-Z. Li, D.-W. Zhang, S. Jiang, G.-Z. Shi, C.-T. Huang
  Guangxi University, Nanning

Funding: Supported by National Natural Science Foundation of China (10576040).

A new method was developed for AMS measurement of ¹²⁶Sn. Major features of the method include the use of SnF₂ as target material, the selection of SnF₃^- molecular ions for extraction form from the target, and the transmission of ¹²⁶Sn beam current. A sensitivity of (1.92±1.13)×10^-10 (¹²⁶Sn/Sn) has been reached by measuring a blank sample.

• X. Wang, H. Shen, S. Jiang, M. He, K. Dong, C. Li, W. Wang, S. Wu, Y. Bao, X. Guan, Y. Hu, Q. You
  CIAE, Beijing
• D. Zhang, G. Shi, C. Huang
  Guangxi University, Nanning

Funding: Work supported by the NSAF (National Nature Science Fundation- China Academy of Engineering Physics Fundation) No.10576040.

²³⁶U is a long-lived radioactive isotope with a half-life of 2.342(3) ×10⁷ a, which produced principally by thermal neutron capture on ²³⁵U. ²³⁶U is potentially applied in geological research and nuclear safeguards. Accelerator mass spectrometry (AMS) is presently the most sensitive technique for the measurement of ²³⁶U. A method for AMS measurement of long-lived heavy ion ²³⁶U was developed at CIAE with the set up the AMS dedicated injector and the newly proposed ²⁰⁸Pb¹⁶O₂^- molecular ions for the simulation of ²³⁶U ion transport. A sensitivity of lower than 10^-10 has been achieved for isotopic ratio ²³⁶U/²³⁸U in present work.