Supported by the Foundation of China Academy of Engineering Physics under Grant No 10576040, and the National Natural Science Foundation of China under Grant No 10705054.
Accelerator mass spectrometry (AMS) is one of the most promising methods to detect minute amounts of 182Hf. However, the sensitivity of 5×10^-11 for ^182Hf/180Hf obtained previously by the AMS method at China Insti...