The 16th International Conference on Accelerator Mass Spectrometry

Progress of Positive Ion Mass Spectrometry Based on 2.45 GHz Electron Cyclotron Resonance Ion Source

NAT-6

21 Oct 2024, 13:50

20m

GRAND BALLROOM (宴会厅), 2nd Floor

Oral Presentation New and Advanced AMS Techniques New and Advanced AMS Techniques

Speakers

Bujian Cui Li Kai (Peking University) Guo Zhiyu (Peking University)

Description

Radiocarbon measurement technology has significant applications in archaeology, earth science, environmental science, biomedicine and so on, especially in radioactive dating, climate change, nuclear analysis, pharmacokinetics. The traditional 14C accelerator mass spectrometer (14C-AMS) based on tandem is much expensive and complex to maintain and operation. It is urgent to develop a new type carbon ion mass spectrometer. 14C Positive Ion Mass Spectrometry (14C-PIMS), that based on positive and negative ion conversion (C2+-C-), will be a low cost, compact equipment, which can be a potential new method. Recently, 14C -PIMS studies on C2+ producing and C2+-C- charge exchanging have been carried out at Peking University (PKU). Based on a 2.45 GHz ECR ion source, a desired C2+ beam was obtained. Simultaneously, a 6% C2+ to C- charge exchanging efficiency was achieved. Next step, attention will be paid on the development of specialized, miniaturized, maneuverable, automated 14C -PIMS equipment based on 2.45 GHz ECR ion source (PKU-PIMS).