AMS measurement of In-situ produced cosmogenic Be-10 in Loess Quartz in Luochuan

作者：Dou Yu Ling^*; Lin Min; He Ming; Tuo Fei; Li Chao Li; Wu Wei Ming; Jiang Shan

来源：Chinese Physics C, 2008, 32: 279-283.

• Loess in Luochuan
• In-situ produced cosmogenic Be-10
• AMS measurement

Loess is the most important and the most typical continental classic sediments of Quaternary. So the measurement of In-situ produced cosmogenic Be-10 is expected to be used for the Loess stratigraphic age. But the production rate of In-situ produced cosmogenic Be-10, in Loess quartz is very low. It requires very high sensitivity and accuracy of measurement. This work has measured the concentrations of Be-10 of two layers in Loess section of Luochuan including L8, L9 and the concentrations of Be-10 in (of) blank sample with the HI-13 AMS system at China Insitute of Atomic Energy(CIAE), then calculated the content of Be-10 in loess quartz for each layer. The ratio of Be-10/Be-9 was found in the range of 10(-13). The background of Be-10/Be-9 was about 3x10(-14).

• 出版日期2008-10
• 单位兰州大学; 中国原子能科学研究院; 广西大学