AMS measurement of 32Si at the China Institute of Atomic Energy (CIAE)

Abstract A method for AMS measurement of 32 Si has been established at CIAE with the HI-13 Tandem Accelerator and the newly developed Δ E -Q3D detection system. The production of 32 Si, the preparation of a set of 32 Si reference samples, and their subsequent analysis with the new system are described in detail. An overall suppression factor of more than 10 12 for the interfering isobar 32 S, resulting in a detection sensitivity below 32 Si/Si = 5 × 10 −15 , has been demonstrated for a limited set of artificially produced samples.