T04_P22

The Radiocarbon and Tritum measurments at GXNU-AMS facility

Shen H^1,2, Tang J^1,2,  Shi S¹, Zhang G¹, Wang  L¹,  Chen D¹, Qi L¹, He M³, Sasa K⁴,  Jiang S⁴

¹Guangxi Normal University, Guilin, China, ² Guangxi key laboratory of nuclear physics and nuclear technology, Guilin, China, ³China Institute of Atomic Energy, Beijing, China, ⁴ University of Tsukuba, Tsukuba, Japan

A single-stage accelerator mass spectrometer (GXNU-AMS) developed for Radiocarbon and Tritium measurements was installed and commissioned at Guangxi Normal University in 2017. During several years of operation, its performance has been continuously improved and applied in multidisciplinary fields. Currently, the measurement sensitivity for radiocarbon and tritium is ¹⁴C/¹²C ~ (2.23±0.045) ×10-15 and ³H/¹H ~ (1.23±0.17)×10-16, respectively, and the measurement accuracy is ~ 0.6%, which can meet the measurement requirements in the fields of life sciences and archaeology applications. This study presents the performance characteristics of GXNU-AMS and several interesting application studies.