Since the Accelerator Mass Spectrometry (AMS) system at the China Institute of Atomic Energy (CIAE) has been commenced in 1989, ³⁶Cl, ¹⁰Be, ¹²⁹I, ²⁶Al, ⁷⁹Se and ⁴¹Ca have been measured.The available time for the AMS measurements is very limited because the HI-13 tandem accelerator in the CIAE is used for not only AMS researches but also many kinds of research works. Only about 10% of the beam time is shared to the AMS studies. So, it is difficult to measure many samples and to carry out deep applications.Thus, at this moment, we are focusing our studies on the development of the AMS measurement and on detection methods for the several interesting applicationstudies.The projectile X-ray AMS (PX-AMS) method, Bragg curve detection method and a new particle identification method called gas-filled time of flight detection have been energetically developed. The AMS measurements in the fields of biomedicine,environment, and nuclear astrophysics are carried into execution.

   In order to measure heavier elements, we are now developing a very bright injection system with an enough mass resolution power. We also have made a plan to construct a new tandem accelerator that is dedicated in the AMS studies and proposed it to the Government. Though the proposal has not yet granted, we are started design studies for the new AMS system in which we are considering to use 6 MV tandem accelerator.