Design of Gas-Filled Detector for ¹⁰Be AMS Measurement

Accelerator mass spectrometry (AMS) is a powerful tool on many research fields and ¹⁰Be is one of the most important isotopes measured by AMS. To meet the requirement of the research project of exposure age and ¹⁰Be contents in loess, a gas detector was developed at PKUAMS. With this new detector the measurement efficiency of ¹⁰Be ions is about 90% and counting rate can reach 23 s^-1 for BeO^- current of 1.2 μA from the ion source and for NIST standard samples.