AMS Measurement of Cl-36 with a Q3D Magnetic Spectrometer at CIAE

作者：Li Chaoli^*; He Ming; Zhang Wei; Wu Shaoyong; Li Zhenyu; He Xianwen; Liu Jiancheng; Dong Kejun; Jiang Shan

来源：Plasma Science and Technology, 2012, 14(6).

DOI：10.1088/1009-0630/14/6/25

• Cl-36
• AMS
• Delta E-Q3D
• isobar separation

The ratio of Cl-36/Cl can determine the exposure age of surface rocks and monitor the secular equilibrium of Cl-36 of sedimentary and igneous rock in groundwater. Due to the uncertainty effects of different chemical separation processes for removing S-36, there is a high degree of uncertainty in Cl-36 accelerator mass spectrometry (AMS) measurements if the ratio of Cl-36/Cl is lower than 10(-14). A Cl-36 AMS higher sensitivity measurement has been set up by using a Delta E-Q3D method at the China Institute of Atomic Energy (CIAE). The performances of Delta E-Q3D method for Cl-36-AMS measurement had been systemically studied. The experimental results show that the Delta E-Q3D method has a higher isobar suppression factor. Taking advantage of direct removing S-36, the sample preparation can be simplified and the uncertainty effects of different chemical separation processes can be reduced in Cl-36 AMS measurements.

• 出版日期2012-6
• 单位广西大学