Developments in accelerator mass spectrometry (AMS) method for 182Hf
- Received Date: 2008-07-17
- Accepted Date: 1900-01-01
- Available Online: 2008-01-03
Abstract: The present detection limit for 182Hf at CIAE HI-13 AMS systems could not satisfy various applications (e. g. detection of a nearby supernovae signal). Therefore, techniques were developed in this work to improve the AMS measurement of 182Hf mainly on building a new injector and using a method that based on solid-phase reaction for the preparation of HfF4 samples from HfO2. The experimental results show that mass resolution of the injector can reached 630, and the F-/O- and beam current of 180HfF5- for HfF4 samples produced by dry method is about 2—3 times and 1.5 times of that by previously method, respectively.